rent Magnetic recording disk drive with write driver to write head transmission line with multiple segments having different numbers of conductive traces By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A multiple-segment transmission line in a hard disk drive enables a wider optimization range of the slope, duration and amplitude of the transmission line overshoot (TLO) wave shape. There is a first segment with two traces for connection to the write driver circuitry, an end segment with two traces for connection to the write head and at least two intermediate segments. The number of traces in a segment is different from the number of traces in the segments to which the segment is immediately connected. There is an even number of traces in each segment and the traces in each segment are interleaved. The number of segments and the number of traces in each segment can be selected to achieve the desired impedance levels for the different segments to achieve the desired wave shape for the TLO. All of the traces on the transmission line are preferably coplanar. Full Article
rent Heat-assisted magnetic recording (HAMR) write head with recessed near-field transducer and optically transparent protective film By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A heat-assisted magnetic recording (HAMR) air-bearing slider has an optically-transparent protective film over the near-field transducer (NFT) to protect the NFT from excessive heat caused by the accumulation of carbonaceous material on the slider's overcoat. The NFT is thus separated from the overcoat by the protective film. The protective film does not cover the write pole end, which is covered only by the overcoat, so there is no spacing loss between the write pole end and the recording layer on the disk. In one embodiment the protective film is coplanar with the recording-layer-facing surface of the slider and the overcoat covers both the protective film and the write pole end. In another embodiment the overcoat has a window that surrounds the protective film, with the protective film being substantially coplanar with the air-bearing surface (ABS) of the slider. In both embodiments the smooth topography of the slider's ABS is maintained. Full Article
rent Current-perpendicular-to-the-plane (CPP) magnetoresistive (MR) sensor structure with multiple stacked sensors and improved center shield By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A two-dimensional magnetic recording (TDMR) read head has upper and lower read sensors wherein the lower read sensor has its magnetization biased by side shields of soft magnetic material. The center shield between the lower and upper sensors may be an antiparallel structure (APS) with two ferromagnetic layers separated by an antiparallel coupling (APC) layer. The center shield has a central region and two side regions, but there is no antiferromagnetic (AF) layer in the central region. Instead the two side regions of the upper ferromagnetic layer in the APS are pinned by AF tab layers that are electrically isolated from the upper sensor. The upper ferromagnetic layer and the APC layer in the APS may also be located only in the side regions. The thickness of the center shield can thus be made thinner, which reduces the free layer to free layer spacing. Full Article
rent Axle assembly having differential assembly with inverted differential bearings By www.freepatentsonline.com Published On :: Tue, 05 May 2015 08:00:00 EDT An axle assembly having a carrier housing, a pair of axle tubes, a differential case, a pair of differential bearings and a pair of bearing adjusters. The carrier housing includes a cavity, which is configured to receive the differential case, and a pair of axle tubes that are mounted to the carrier housing. The differential case includes bearing bores into which the outer races of the differential bearings are received. The bearing adjusters are threaded to the carrier housing and support the differential bearings on a side opposite the differential case. Full Article
rent Reinforced isolation for current sensor with magnetic field transducer By www.freepatentsonline.com Published On :: Tue, 09 Dec 2014 08:00:00 EST A current sensor packaged in an integrated circuit package to include a magnetic field sensing circuit, a current conductor and an insulator that meets the safety isolation requirements for reinforced insulation under the UL 60950-1 Standard is presented. The insulator is provided as an insulation structure having at least two layers of thin sheet material. The insulation structure is dimensioned so that plastic material forming a molded plastic body of the package provides a reinforced insulation. According to one embodiment, the insulation structure has two layers of insulating tape. Each insulating tape layer includes a polyimide film and adhesive. The insulation structure and the molded plastic body can be constructed to achieve at least a 500 VRMS working voltage rating. Full Article
rent Surface mountable over-current protection device By www.freepatentsonline.com Published On :: Tue, 13 Jan 2015 08:00:00 EST A surface-mountable over-current protection device comprises one PTC material layer, first and second connecting conductors, first and second electrodes and an insulating layer. The PTC material layer has a resistivity less than 0.2 Ω-cm, and comprises crystalline polymer and conductive filler dispersed therein. The first and second connecting conductors are capable of effectively dissipating heat generated from the PTC material layer. The first and second electrodes are electrically connected to first and second surfaces of the PTC material layer through the first and second connecting conductors, respectively. The dissipation factor depending on the ratio of the total area of the electrodes and the conductors to the area of the PTC material layer is greater than 0.6. At 25° C., the value of the hold current of the device divided by the product of the area of the PTC material layer and the number of the PTC material layer is greater than 1A/mm2. Full Article
rent Surface mountable over-current protection device By www.freepatentsonline.com Published On :: Tue, 20 Jan 2015 08:00:00 EST A surface mountable over-current protection device having upper and lower surfaces comprises a PTC device, first and second electrodes, and first and second circuits. The PTC device comprises a PTC material layer and first and second conductive layers. The PTC material layer is disposed between the conductive layers and comprises crystalline polymer and conductive filler dispersed therein. The first electrode comprises a pair of first metal foils, whereas the second electrode comprises a pair of second metal foils. The first circuit connects the first electrode and conductive layer, and has a first planar line extending horizontally. The second circuit connects the second electrode and conductive layer, and has a second planar line extending horizontally. At least one of the planar lines has a thermal resistance sufficient to mitigate heat dissipation by which the over-current protection device undergoes a test at 25° C. and 8 amperes can trip within 60 seconds. Full Article
rent Over-current protection device and method of making the same By www.freepatentsonline.com Published On :: Tue, 27 Jan 2015 08:00:00 EST An over-current protection device has a PTC device, first and second electrodes and an insulation layer. The PTC device comprises first and second electrically conductive members and a PTC layer laminated between the first and second electrically conductive members. The first and second electrodes are electrically connected to the first and second electrically conductive members, respectively. The insulation layer is disposed on a surface of the first electrically conductive member. The device is a stack structure extending along a first direction, and comprises at least one hole extending along a second direction substantially perpendicular to the first direction. The value of the covered area of the hole divided by the area of the form factor of the over-current protection device is not less than 2%, and the value of the thickness of the device divided by the number of the PTC devices is less than 0.7 mm. Full Article
rent Apparatus and method for improved current shunt sensing By www.freepatentsonline.com Published On :: Tue, 17 Mar 2015 08:00:00 EDT An apparatus and method for improved current shunt sensing in an electrical system, such as a renewable energy electrical system, is disclosed. A current shunt according to aspects of the present disclosure includes a conductive portion that is placed in series with an electrical system The current shunt includes a sensing element that is used to measure the voltage across the conductive portion of the current shunt. The sensing element has an increased width relative to the width of the conductive portion of the shunt. The increased width of the sensing element provides for improved current shunt sensing that results in more accurate voltage (and thus current) measurements across a wide range of frequencies. Full Article
rent Surface mountable over-current protection device By www.freepatentsonline.com Published On :: Tue, 07 Apr 2015 08:00:00 EDT A surface-mountable over-current protection device comprises a PTC material layer, first and second conductive layers, first and second electrodes, first and second electrically conductive connecting members. The PTC material layer has a resistivity less than 0.18 Ω-cm. The conductive layers are in contact with opposite surfaces of the PTC material layer. The first electrode comprises pair of first metal foils and is insulated from the second conductive layer. The second electrode comprises a pair of second metal foils and is insulated from the first conductive layer. The first electrically conductive connecting member connects to the first metal foils and conductive layer. The second electrically conductive connecting member connects to the second metal foils and conductive layer. The first electrically conductive connecting member comprises 40%-100% by area of the first lateral surface, and the second electrically conductive connecting member comprises 40%-100% by area of the second lateral surface. Full Article
rent Over-current protection device By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT An over-current protection device comprises a PTC material layer, a first electrode layer and a second electrode layer. The PTC material layer has opposite first and second surfaces and opposite first and second lateral surfaces. The first electrode layer is in physical contact with the first surface of the PTC material layer and extends to the first lateral surface. The second electrode layer is in physical contact with the first surface of the PTC material layer and extends to the second lateral surface. The second electrode layer is insulated from the first electrode layer by a first separation. The first electrode layer and the second electrode layer are substantially laterally symmetrical, and serve as interfaces for current flowing in and out of the device when the over-current protection device is in use. Full Article
rent Surface mountable over-current protection device By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A surface mountable over-current protection device comprises one PTC material layer, first and second conductive layers, first and second electrodes, and an insulating layer. The PTC material layer comprises crystalline polymer and conductive filler dispersed therein. The first and second conductive layers are disposed on first and second planar surfaces of the PTC material layer, respectively. The first and second electrodes are electrically connected to the first and second conductive layers. The insulating layer is disposed between the first and the second electrodes for insulation. At the melting point of the crystalline polymer, the CTE of the crystalline polymer is greater than 100 times the CTE of the first or second conductive layer, and the first and/or second conductive layers has a thickness which is large enough to obtain a resistance jump value R3/Ri less than 1.4. Full Article
rent Satellite differential positioning receiver using multiple base-rover antennas By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A rover processor determines position of a rover based upon the interaction between multiple antennas located at the rover and multiple antennas located at a base. The rover antennas may include a rover master antenna having a phase center located at the centroid of the antennas patterns of at least two auxiliary rover antennas. The rover processor may determine the position of the rover master antenna based upon the relative positions of at least two rover antennas (e.g., the rover master antenna and at least one rover auxiliary antenna, or at least two rover auxiliary antennas) with respect to at least two antennas of a base transceiver. Full Article
rent Current sensing circuit disconnect device and method By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A device and method are provided for saving power and electricity in a charging device such for external power supplies and battery chargers having a primary circuit and a secondary circuit where a switch is located in the primary circuit and a current sensing device in the secondary circuit to sense when there is a drop in current in the secondary circuit or no current in the secondary circuit because the load or a cell phone is charged and when this occurs the switch in the primary circuit is opened and the primary circuit no longer draws power from the source of power until the switch in the primary circuit is closed by activation of a user of the charging device. Full Article
rent Transfer switch with ground current indication By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A transfer switch configured to detect a ground current is configured to selectively connect a first power source or a second power source to a load. Each of the power sources includes at least one “hot” lead and one neutral lead, and the transfer switch is configured to switch both the “hot” and the neutral leads. If the neutral switching portion of the transfer switch fails, current may be supplied to the load via the “hot” lead of one of the power sources and return from the load via a ground conductor and the neutral lead of the other power source. The transfer switch includes a current sensor, detecting current on the ground conductor, in order to detect such a condition. The signal from the current sensor is provided to a control circuit, which, in turn, activates an indicator if the current on the ground conductor exceeds a predefined level. Full Article
rent Method and apparatus for processing a motor signal, having current ripple, of a DC motor By www.freepatentsonline.com Published On :: Tue, 13 May 2014 08:00:00 EDT In order to process a motor signal (Ia, Um) of a DC motor (4), in particular of an adjustment drive of a motor vehicle, the armature current (Ia) and the motor voltage (Um) of the DC motor (4) are detected and used for determining the back-emf (E) of the DC motor (4), wherein the determined back-emf (E) is used to generate a useful signal (Sf, SEFL), which is in particular speed-proportional, from the armature current signal (Ia) for position sensing or for evaluating an excess force limitation. Full Article
rent Spindle speed detection through current sensing during boost braking By www.freepatentsonline.com Published On :: Tue, 15 Jul 2014 08:00:00 EDT A circuit includes a comparator having input terminals configured to be coupled across a drive transistor adapted to drive a phase of a motor. The comparator senses a drive current of the motor phase, said sensed drive current represented by a periodic signal whose period is indicative of motor speed. A motor speed calculation circuit receives the periodic signal and processes the periodic signal to determine a speed of the motor. Full Article
rent Motor current detection apparatus, motor controller, and electric power tool By www.freepatentsonline.com Published On :: Tue, 13 Jan 2015 08:00:00 EST A motor current detection apparatus in the present invention includes: a current detection unit, a first filter, and a second filter. The detection unit detects a conduction current flowing from a battery to a brushless motor and outputs a conduction current signal corresponding to the detected conduction current. The first filter extracts a first current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a frequency band equal to or lower than a predetermined first cutoff frequency. The second filter extracts a second current signal which is included in the conduction current signal outputted from the detection unit and is a signal component in a predetermined frequency band within a frequency band equal to or lower than a predetermined second cutoff frequency higher than the first cutoff frequency and having the second cutoff frequency as a maximum value. Full Article
rent Apparatus and method for compensating offset of current sensor By www.freepatentsonline.com Published On :: Tue, 17 Mar 2015 08:00:00 EDT Provided is an apparatus for compensating offset of a current sensor detecting a motor current supplied by an inverter for PWM (Pulse Width Modulation) control of a motor, the apparatus including a current controller providing a PWM signal generated based on the motor current detected by the current sensor to the inverter, calculating an offset using the motor current detected by the current sensor in response to presence and absence of the PWM control of the motor, or offset-compensating the motor current detected by the current sensor. Full Article
rent Omega-3 enriched fish oil-in-water parenteral nutrition emulsions By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT An emulsion is provided including: an oil component and a water component, the oil component including: fish oil triglycerides in an amount of about 60% to about 90% based on the weight of the oil component; wherein the fish oil triglycerides include omega-3 fatty acids, expressed as triglycerides, in an amount of at least 60%, based on the total weight of the fatty acids of the fish oil triglycerides; wherein the fish oil triglycerides include a total amount of EPA and DHA, expressed as triglycerides, of at least 45%, based on the total weight of the fatty acids of the fish oil triglycerides; and, at least one medium-chain triglyceride, wherein a total amount of the at least one medium-chain triglyceride is from about 10% to about 40% based on the weight of the oil component. Full Article
rent Device with transparent and higher conductive regions in lateral cross section of semiconductor layer By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A device including one or more layers with lateral regions configured to facilitate the transmission of radiation through the layer and lateral regions configured to facilitate current flow through the layer is provided. The layer can comprise a short period superlattice, which includes barriers alternating with wells. In this case, the barriers can include both transparent regions, which are configured to reduce an amount of radiation that is absorbed in the layer, and higher conductive regions, which are configured to keep the voltage drop across the layer within a desired range. Full Article
rent Driving circuit with zero current shutdown and a driving method thereof By www.freepatentsonline.com Published On :: Tue, 05 May 2015 08:00:00 EDT Methods and circuits related to a driving circuit with zero current shutdown are disclosed. In one embodiment, a driving circuit with zero current shutdown can include: a linear regulating circuit that receives an input voltage source, and outputs an output voltage; a start-up circuit having a threshold voltage, the start-up circuit receiving an external enable signal; a first power switch receiving both the output voltage of the linear regulating circuit and the external enable signal, and that generates an internal enable signal, the internal enable signal being configured to drive a logic circuit; when the external enable signal is lower than a threshold voltage, the driving circuit is not effective; when the external enable signal is higher than the threshold voltage, the start-up circuit outputs a first current; and where the output voltage at the first output terminal is generated by the linear regulating circuit based on the first current. Full Article
rent Intelligent current drive for bus lines By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT An intelligent current drive is disclosed that couples an active current source to a bus line to increase the rate of pull-up and decouples the active current source from the bus line prior to reaching the desired pull-up voltage. Full Article
rent Single differential-inductor VCO with implicit common-mode resonance By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT A circuit for a single differential-inductor oscillator with common-mode resonance may include a tank circuit formed by coupling a first inductor with a pair of first capacitors; a cross-coupled transistor pair coupled to the tank circuit; and one or more second capacitors coupled to the tank circuit and the cross-coupled transistors. The single differential-inductor oscillator may be configured such that a common mode (CM) resonance frequency (FCM) associated with the single differential-inductor oscillator is at twice a differential resonance frequency (FD) associated with the single differential-inductor oscillator. Full Article
rent Current reused stacked ring oscillator and injection locked divider, injection locked multiplier By www.freepatentsonline.com Published On :: Tue, 28 Apr 2015 08:00:00 EDT A phase locked loop includes a voltage controlled oscillator and a frequency divider or frequency multiplier. The voltage controlled oscillator and the frequency divider/multiplier are coupled together in a stacked configuration. A drive current is supplied to the voltage controlled oscillator. The drive current passes from the voltage controlled oscillator to the frequency divider/multiplier, thereby driving the frequency divider/multiplier with the same drive current that was supplied to the voltage controlled oscillator. Full Article
rent Current output control device, current output control method, digitally controlled oscillator, digital PLL, frequency synthesizer, digital FLL, and semiconductor device By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT A current output control device is provided that includes: a current cell array section including plural current cell circuits that are each connected in parallel between a first terminal (power source) and a second terminal (ground) that connect between the first terminal and the second terminal in by operation ON so as to increase control current flowing between the first terminal and the second terminal; and a code conversion section (decoder) that generates signals (row codes, column codes) to ON/OFF control current cells so as to change the number of current cells that connect the first terminal and the second terminal according to change in an externally input code and that inputs the generated signals to the current cell array section. Full Article
rent Method for operating a processing system, in which product units having different product characteristics are processed By www.freepatentsonline.com Published On :: Tue, 06 Jan 2015 08:00:00 EST A method for operating a processing system, in which product units of different formats are processed. The processing system contains a plurality of processing devices that are arranged one after the other in a processing line. In the event of a format changeover, certain component arrangements arranged in the processing system must be adapted to the new product format. In the event of an upcoming format change, a gap in the conveyed goods is generated while the conveying operation is maintained, wherein the gap in the conveyed goods runs through the processing system along the processing devices. As soon as the gap in the conveyed goods runs through a component arrangement to be adapted to the new format, the format is changed over at the component arrangement while the gap in the conveyed goods runs through the component arrangement. Full Article
rent Method of, and apparatus for, processing sheets of different formats By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT An apparatus for processing sheets of different formats, the apparatus including a feeding device that feed sheets of different formats in a feeding direction one behind the other, and at a certain conveying speed, at least two collecting drums disposed downstream of the feeding device, the at least two collecting drums having cylindrical lateral surfaces that rotate about an axis of rotation, securing means for temporarily securing the fed sheets on a circumference of the at least two collecting drums, a drive device that drives the collecting drums in rotation at a circumferential speed that corresponds to the conveying speed of the feeding device, and a sensing device for sensing the sheets of different formats moving past is arranged along the conveying path and senses the leading edge of the sheets of different formats, as seen in the feeding direction, or markings applied to the sheets of different formats. Full Article
rent Semiconductor device including a current mirror circuit By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT In a semiconductor device, where, with respect to a parasitic resistor in a current mirror circuit, a compensation resistor for compensating the parasitic resistor is provided in the current mirror circuit, the current mirror circuit includes at least two thin film transistors. The thin film transistors each have an island-shaped semiconductor film having a channel formation region and source or drain regions, a gate insulating film, a gate electrode, and source or drain electrodes, and the compensation resistor compensates the parasitic resistor of any one of the gate electrode, the source electrode, and the drain electrode. In addition, each compensation resistor has a conductive layer containing the same material as the gate electrode, the source or drain electrodes, or the source or drain regions. Full Article
rent Display apparatus having spacers with different heights and different upper and lower surface areas By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A display apparatus includes a lower substrate, an upper substrate, a spacer and an image display layer. The spacer includes a main spacer, a first sub-spacer and a second sub-spacer. The main spacer has a height greater than that of the first and second sub-spacers. The second sub-spacer has an area wider than that of the main spacer and the first sub-spacer. Full Article
rent Method of selecting stem cells having high chondrogenic differentiation capability By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Thrombospondin 1 (TSP-1), TSP-2, interleukin 17B receptor (IL-17BR) and heparin-binding epidermal growth factor-like growth factor (HB-EGF) associated with stem cell activity and use thereof. Full Article
rent Method of washing adherent cell using trehalose-containing cell-washing solution By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Methods of washing adherent cells, capable of effectively suppressing cell death due to proteolytic enzyme treatment for detaching the adherent cell from a culture vessel and subsequent cell treatment; cell-washing solutions used for the washing method; methods of producing cell suspensions for transplantation using the cell-washing solution; and kits comprising the cell-washing solution. Trehalose or its derivative or a salt thereof is added to physiological aqueous solutions to prepare cell-washing solutions containing trehalose or its derivative or a salt thereof as an active ingredient. The cell-washing solutions can be used to wash adherent cells before detaching the adherent cells from a culture vessel by proteolytic enzyme treatment to suppress cell death due to the proteolytic enzyme treatment. The concentration of trehalose applied to the cell-washing solution may be a concentration capable of suppressing the cell death due to the proteolytic enzyme treatment, such as 0.1 to 20 (w/v) %. Full Article
rent Cushion element with different hardness zones for motor vehicles By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A cushion element for a vehicle seat or headrest comprises a non-woven layer and a fiber composite material. An insert material is arranged between the non-woven layer and the fiber composite material, and has different compression properties than the fiber composite material. The fiber composite material forms together with the insert material and the non-woven layer a one-piece material composite. Full Article
rent Backlight unit with controllers of air and fluid and display device having the same using two different lights By www.freepatentsonline.com Published On :: Tue, 07 May 2013 08:00:00 EDT Provided are a backlight unit and a display device having the same. The backlight unit includes a case having an opening, at least one lamp assembly disposed on a side surface of the case and including a light source, an optical transreflective unit on the case, the optical transreflective unit transmitting a portion of first light passing through the opening and reflecting a portion of second light generated from the light source, and an optical sheet including a first diffusion unit on the optical transreflective unit. Full Article
rent Oxide sintered compact for producing transparent conductive film By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT The present invention provides a sputtering target suitable for producing an amorphous transparent conductive film which can be formed without heating a substrate and without feeding water during the sputtering; which is easily crystallized by low-temperature annealing; and which has low resistivity after the crystallization. An oxide sintered compact containing an indium oxide as a main component, while containing tin as a first additive element, and one or more elements selected from germanium, nickel, manganese, and aluminum as a second additive element, with the content of tin which is the first additive element being 2-15 atom % relative to the total content of indium and tin, and the total content of the second additive element being 0.1-2 atom % relative to the total content of indium, tin and the second additive element. Full Article
rent Transmitter having voltage driver and current driver By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A circuit includes a first power node at a first voltage level, a second power node at a second voltage level, a first voltage driver, a first current driver, and a control unit. The first voltage driver is configured to electrically couple a first output node to the first power node when a first input signal at the first input node is at a first logic state, and electrically couple a first output node to the second power node when the first input signal is at a second logic state. The first current driver is configured to inject or extract a first adjustment current into or out of a first output node. The control unit is configured to generate a measurement result of the first voltage level, and to set the first adjustment current according to the measurement result. Full Article
rent Differential creepage control system for optimizing adhesion of locomotives By www.freepatentsonline.com Published On :: Tue, 31 Jul 1990 08:00:00 EDT This invention concerns a creepage control system for locomotives that optimizes adhesion while minimizing wasted energy, rail/wheel wear and shock loading on the drive train. The basis of the invention is to always maintain a small but positive value of the slope of the wheel-rail adhesion creep curve (or differential of adhesion versus creep) for all traction axles of the locomotive through microprocessor control. The value of the differential of adhesion versus creep is used to define an operating window for control and operation of motors continually in the optimum domain when high adhesion is demanded. When, due to a sudden increase in rail contamination, the value of the control function becomes negative, the microprocessor control reduces the generator excitation in stages until the function becomes positive and inside the operating window again. The microprocessor controls a rail cleaning system which is turned on or off depending on the cleanliness of the rail. It also controls a rail sanding system which is turned on or off depending on the magnitude of wheel creep. Full Article
rent Machine tool comprising a machine spindle, a tool holder and a contact point for electric current or data transmission By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT A machine tool having a motor-driven machine spindle which can be rotated about a spindle axis. The machine spindle has a tool holder arranged at the face. A tool is exchangeably arranged on the machine spindle. The tool has a coupling element which is compatible with the tool holder of the machine spindle. The coupling element has a rear surface pointing toward the machine spindle. The machine tool has at least one galvanic contact point for the electric current or data transmission, the point being arranged between the machine spindle and the tool and rotating together with the machine spindle. The galvanic contact point has a contact element which is arranged at the face of the tool holder on the spindle side, and a contact element which is arranged on the rear surface of the coupling element on the tool side. Full Article
rent De-noise circuit and de-noise method for differential signals and chip for receiving differential signals By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A de-noise circuit and a de-noise method for differential signals and a chip for receiving differential signals are provided. The de-noise circuit includes a filter and a register. Both the filter and the register are disposed in the chip. The chip receives a differential signal through a first input terminal and a second input terminal. The filter is coupled between the first input terminal and the second input terminal of the chip. The filter filters out noises in the differential signal. The filter includes at least one filter unit. Each filter unit has at least one resistance value or at least one capacitance value. The register is coupled to the filter. The register receives and stores a control value. The register controls the resistance value or the capacitance value of at least one of the filter units based on the control value. Full Article
rent Method and device for the manufacturing of fabrics with at least two different pile heights in a same pile row By www.freepatentsonline.com Published On :: Tue, 03 Feb 2015 08:00:00 EST A method weaves pile fabrics with at least two different pile heights (a, b) in the same pile row, wherein the fabrics have weft threads, ground warp threads and pile-warp threads (1, 2), wherein these pile-warp threads are interlaced in the fabric, according to a pattern, in a figure-forming manner or are inwoven in a non-figure-forming manner, and which, when they are figure-forming, form pile with a well-defined pile height. The method includes a first set of pile warp threads, under light strain and at least a second set of pile warp threads under a higher strain. A device for manufacturing such fabrics is described. Full Article
rent Available charging/discharging current calculation method and power supply device By www.freepatentsonline.com Published On :: Tue, 30 Jun 2015 08:00:00 EDT A method includes steps of dividing resistance R into a physical and chemical resistances Ro and Rp, obtaining corrected open-circuit voltages Vo corresponding to setting currents Ia to Ix, acquiring predicted reaching voltages Va to Vx corresponding to the setting currents Ia to Ix, and creating a current-voltage curve. The corrected open-circuit voltages Vo are obtained to predict available maximum currents I—target in a particular time t2. The predicted reaching voltages Va to Vx are acquired based on corrected physical and chemical resistances Ro and Rp, and the corrected open-circuit voltages Vo. The current-voltage curve is creased based on the setting currents Ia to Ix and the predicted reaching voltages Va to Vx to acquire upper and lower limit voltages Vmax and Vmin, and upper and lower limit currents Imax and Imin at a temperature whereby assigning these limit currents to available maximum currents I—target in charging and discharging operations, respectively. Full Article
rent System and method for non-sinusoidal current waveform excitation of electrical generators By www.freepatentsonline.com Published On :: Tue, 02 Dec 2014 08:00:00 EST An electrical generator includes a stator having fractional-slot concentrated windings and a rotor having field windings. A drive is provided having a circuit to control current flow to the field windings and a controller to input an initial DC field current demand to the circuit to cause the circuit to output an initial DC field current representative of a DC field current demand that would cause an electrical generator having sinusoidal stator windings to output a desired AC power. The controller receives feedback on the magnetic field generated by the initial DC field current, isolates an ideal fundamental component of the magnetic field based on the feedback and to generate a modified DC field current demand, and inputs the modified DC field current demand to the circuit, thereby causing the circuit to output an instantaneous non-sinusoidal current to the field windings to generate a sinusoidal rotating air gap magnetic field. Full Article
rent Electromagnetic device for generating electrical current and methods thereof By www.freepatentsonline.com Published On :: Tue, 14 Apr 2015 08:00:00 EDT An AC current generator for generating an CA current and method therefor and includes a stator and a rotor. The stator includes an outer shell of non-magnetic material enclosing an evacuated chamber and having a distribution of a plurality of ferromagnets attached thereto. The rotor includes an inner core of non-magnetic material located at a stability location within said evacuated chamber and having a distribution of a plurality of diamagnets attached thereto. In addition, the AC current generator includes at least one magnetic flux detection unit located within at least one magnetic field generated by at least one group of ferromagnets of the plurality of ferromagnets. Displacing the rotor from the stability location towards the at least one group of ferromagnets generates a change in magnetic flux in the magnetic field thereby generating an AC current in the at least one magnetic flux detection unit. Full Article
rent Direct current brushless motor By www.freepatentsonline.com Published On :: Tue, 28 Apr 2015 08:00:00 EDT A motor includes a frame, a shaft rotatably mounted onto the frame, and at least one disc mounted onto the shaft. At least one permanent magnet is mounted on the disc, and at least one electromagnet and at least one coil are mounted to the frame in rotational magnetic proximity to the permanent magnet. A battery is connectable to the electromagnet and the coil for energizing the electromagnet and for receiving electrical current from the coil for charging the battery. A relay switch controls the transmission of electrical power from the battery to the electromagnet. A sensor generates a signal to the relay switch to activate electrical power to the electromagnet upon sensing that the permanent magnet is positioned with respect to the electromagnet such that a magnetic force generated by the electromagnet would be effective for inducing movement of the permanent magnet and consequent rotation of the disc. Full Article
rent Current balance control in converter for doubly fed induction generator wind turbine system By www.freepatentsonline.com Published On :: Tue, 12 May 2015 08:00:00 EDT Systems and methods for reducing current imbalance between parallel bridge circuits used in a power converter of a doubly fed induction generator (DFIG) system are provided. A control system can monitor the bridge current of each of the bridge circuits coupled in parallel and generate a feedback signal indicative of the difference in bridge current between the parallel bridge circuits. Command signals for controlling the bridge circuits can then be developed based on the feedback signal to reduce current imbalance between the bridge circuits. For instance, the pulse width modulation of switching devices (e.g. IGBTs) used in the bridge circuits can be modified to reduce current imbalance between the parallel bridge circuits. Full Article
rent Current collector and energy transmission system By www.freepatentsonline.com Published On :: Tue, 23 Dec 2014 08:00:00 EST The invention relates to a current collector 1 for a device 2 that can be displaced with and against the driving direction F along a conductor line 5, comprising a current collector cart 8 for the guided displacement along a guide element 9 of the conductor line 5, and an energy transmission system. The invention solves the problem of providing a current collector and an energy transmission system, which enable an energy-conserving, contact-reliable and damage-free displacement of the current collector along a conductor line and a simple connection of the current collector to the conductor line, in that at least one first lever assembly 12L between the current collector cart 8 and displaceable device 2 is provided with a first drive lever arm 13L, the first end of which can be connected in a rotatable manner to the displaceable device 2 and the second end of which is connected in a rotatable manner to a second end of at least one first tension lever arm 14L, the first end thereof being connected in a rotatable manner to a current collector cart, wherein a first adjustment drive 15L is provided in order to be able to move the current collector cart 8 between a retracted position on the displaceable device 2 and an extended position away from the displaceable device 2, and wherein a first locking device 16; 18L; 15L is provided, in order to lock the first drive lever arm 13L when displacing the displaceable device 2 in the driving direction F in a predetermined extended position. Full Article
rent Transport vehicle equipped with current collector By www.freepatentsonline.com Published On :: Tue, 05 May 2015 08:00:00 EDT A transport vehicle equipped with a current collector, includes: a vessel to load a load; a current collector that extends to receive electric power from an overhead line and contracts and retracts so as to be disposed away from the overhead line; and a vehicle body that rotationally drives driving wheels by at least one of the electric power from the current collector and a self-propelled driving source and on which the vessel is placed; a pantograph position detector that detects a relative position of the current collector and the overhead line; and a control device that controls a driving direction of the vehicle body or gives an instruction of information with which a direction in which the vehicle body is to be operated can be recognized, so that the relative position is brought to a position where the current collector and the overhead line are connected. Full Article
rent Animal deterrent device for joggers By www.freepatentsonline.com Published On :: Tue, 06 Aug 1985 08:00:00 EDT An animal deterrent device consists essentially of a palm-sized handle of six to eight inches in length for hand gripping and defining a housing within the central portion thereof to house a plurality of generally rigid tubular sections telescoping one within the other within the housing and being adhered thereto by a fusible adhesive adhering an outer sleeve of the telescoping sections. A pocket clip is attached to the handle and the plurality of sections when fully protracted extending to a length of about three feet with the overall apparatus weighing less than six ounces. The apparatus may additionally have a loop attached for hand transporting of the apparatus. The apparatus is utilized by a jogger upon an attacking animal by extending the telescoping sections to form a rigid whip-like structure so as to engage the attacking animal with the extended telescoping sections. Full Article
rent Structures for improving current carrying capability of interconnects and methods of fabricating the same By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT Interconnect structures and methods of fabricating the same are provided. The interconnect structures provide highly reliable copper interconnect structures for improving current carrying capabilities (e.g., current spreading). The structure includes an under bump metallurgy formed in a trench. The under bump metallurgy includes at least: an adhesion layer; a plated barrier layer; and a plated conductive metal layer provided between the adhesion layer and the plated barrier layer. The structure further includes a solder bump formed on the under bump metallurgy. Full Article
rent Methods and apparatus for applying periodic voltage using direct current By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Methods and apparatus for applying pulsed DC power to a plasma processing chamber are disclosed. In some implementations, frequency of the applied power is varied to achieve desired processing effects such as deposition rate, arc rate, and film characteristics. In addition, a method and apparatus are disclosed that utilize a relatively high potential during a reverse-potential portion of a particular cycle to mitigate possible nodule formation on the target. The relative durations of the reverse-potential portion, a sputtering portion, and a recovery portion of the cycle are adjustable to effectuate desired processing effects. Full Article