hi Systems and methods for teaching phonemic awareness By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A system to teach phonemic awareness uses a plurality of phonemes and a plurality of graphemes. Each phoneme is a unique sound and an indivisible unit of sound in a spoken language, and each grapheme is a written representation of one of the plurality of phonemes. A plurality of distinct graphical images and a plurality of unique names are provided where each unique name is associated with one of the graphical images and represents a grouping of graphemes selected from the plurality of graphemes. The system uses a plurality of sets of display pieces having a plurality of individual display pieces. Each individual display piece includes at least a portion of one of the graphical images and the graphemes from the grouping of graphemes constituting the associated unique name. A predefined instructional environment defines a predefined spatial context and predefined rules governing the acquisition and utilization of individual display pieces. Full Article
hi Automatic rule dropping device for linecasting machines equipped with remote control operating mechanism By www.freepatentsonline.com Published On :: Tue, 06 Aug 1957 08:00:00 EDT Full Article
hi Line justifying means and method in selective printing machines By www.freepatentsonline.com Published On :: Tue, 29 Oct 1957 08:00:00 EST Full Article
hi Type setting machine By www.freepatentsonline.com Published On :: Tue, 15 Apr 1958 08:00:00 EST Full Article
hi Type setting machines By www.freepatentsonline.com Published On :: Tue, 21 Nov 1961 08:00:00 EST Full Article
hi Composing machine improvements By www.freepatentsonline.com Published On :: Tue, 01 Jan 1963 08:00:00 EST Full Article
hi Photographic type composition By www.freepatentsonline.com Published On :: Tue, 07 Jul 1964 08:00:00 EDT Full Article
hi Indicator apparatus for line casting machines By www.freepatentsonline.com Published On :: Tue, 05 Oct 1965 08:00:00 EDT Full Article
hi LINE LENGTH AND JUSTIFICATION INDICATOR FOR TYPESETTING MACHINES By www.freepatentsonline.com Published On :: Tue, 16 Oct 1973 08:00:00 EDT A line length remainder and justification indicator device for use with a line composing machine in which the device employs a continuously rotating drum having preselected values of line remainder and justification information indicated thereon. A controlled intermittent flash illuminates only the desired information. Full Article
hi Vehicle front part structure By www.freepatentsonline.com Published On :: Tue, 07 May 2002 08:00:00 EDT A vehicle front part structure includes right and left front side frames provided rightwardly and leftwardly of and extending longitudinally of a vehicle body. A front bumper beam is attached to front ends of the right and left front side frames and extends transversely of the vehicle body. Right and left substays extend downwardly from front parts of the right and left front side frames. The right and left substays have lower parts connected to each other through a front lower cross member. Each of the right and left substays has first portions coupled through fastening members to and has second portions coupled through fillet welding to the respective front parts of the right and left front side frames. Full Article
hi Assemblage of two pieces of bodywork for uniting edge to edge, a piece of body work belonging to such an assemblage, a vehicle bumper and a vehicle fender By www.freepatentsonline.com Published On :: Tue, 06 Apr 2004 08:00:00 EDT The invention relates to an assemblage of two pieces of bodywork (1, 2) each having a flange (5, 6) for pressing against the flange of the other piece. Each flange carries at least one tongue (11, 12) extending towards the other piece. A fastener member (20) is suitable for engaging around the tongues so to prevent them from moving relative to one another once said two pieces of bodywork are in a predetermined position in which they are united flange against flange. The invention also provides the pieces of bodywork constituting said assemblage. Full Article
hi FBR DC vector offset removal using LO phase switching By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT One embodiment relates to a feedback receiver (FBR). The FBR includes a FBR signal input configured to receive a radio frequency (RF) signal, a first local oscillator (LO) signal input configured to receive a first LO signal having an LO frequency, and a second LO signal input configured to receive a second LO signal having the LO frequency. The second LO signal is phase shifted by approximately 90° relative to the first LO signal. FBR also includes a divider that induces a time-varying phase shift in the first and second LO signals while concurrently retaining a 90° phase shift between the first and second LO signals. Full Article
hi Radio frequency (RF) receivers with whitened digital clocks and related methods By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Radio frequency (RF) receivers having whitened digital clocks and related methods are disclosed. Disclosed embodiments generate whitened clocks having random variations that are used to operate digital processing blocks so that interference created by the whitened clocks is seen as white noise within the received RF signal spectrum. RF input signals are received by RF front-ends (RFFEs) that output analog signals associated with channels within the RF input signals. These analog signals are converted to digital information and processed by digital receive path circuitry that outputs digital data associated with the channel. The digital receive path circuitry includes a whitened clock generator that generates a whitened clock having random variations and which a digital processing block that operates based upon the whitened clock. Further, the RFFE and the digital receive path circuitry are located within a single integrated circuit. Full Article
hi Display apparatus, electronic apparatus, and image forming apparatus that hides non-specified images at the same hierarchical level as a specified image By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A display apparatus includes a display section, a display control section, a distance detection section, and a coordinate detection section. The display section has a display area in which a selection image is displayed. When the selection image is formed by a plurality of images hierarchically associated with one another, the display control section displays consecutively the images configuring the selection image in accordance with the hierarchical association. The distance detection section detects a spatial distance between a pointer and the display area. The coordinate detection section detects coordinates which correspond to a position of the pointer. The display control section displays, together with a specified image displayed at a position corresponding to the coordinates detected by the coordinate detection section, related images in an immediately lower level in the hierarchy associated with the specified image, when the spatial distance detected is shorter than a preset threshold distance. Full Article
hi System for and method of classifying and translating graphics commands in client-server computing systems By www.freepatentsonline.com Published On :: Tue, 23 Jun 2015 08:00:00 EDT A client-server computing system includes a server that has a virtual display driver that classifies and, if necessary, translates graphics application programming interface (API) functions to a cross-platform format. Classification involves determining whether the graphics command(s) are platform-specific and/or client-supported functions. After classification and translation, the graphics command(s) are marshaled and transmitted to a client via a network. The client includes a client display driver that executes the functions using a client 3D library and renders the resulting image data to a display. Full Article
hi Pulse output circuit, shift register, and display device By www.freepatentsonline.com Published On :: Tue, 25 Aug 2015 08:00:00 EDT In a pulse output circuit in a shift register, a power source line which is connected to a transistor in an output portion connected to a pulse output circuit at the next stage is set to a low-potential drive voltage, and a power source line which is connected to a transistor in an output portion connected to a scan signal line is set to a variable potential drive voltage. The variable potential drive voltage is the low-potential drive voltage in a normal mode, and can be either a high-potential drive voltage or the low-potential drive voltage in a bath mode. In the batch mode, display scan signals can be output to a plurality of scan signal lines at the same timing in a batch. Full Article
hi Shift register, semiconductor device, display device, and electronic device By www.freepatentsonline.com Published On :: Tue, 06 Oct 2015 08:00:00 EDT The invention provides a semiconductor device and a shift register, in which low noise is caused in a non-selection period and a transistor is not always on. First to fourth transistors are provided. One of a source and a drain of the first transistor is connected to a first wire, the other of the source and the drain thereof is connected to a gate electrode of the second transistor, and a gate electrode thereof is connected to a fifth wire. One of a source and a drain of the second transistor is connected to a third wire and the other of the source and the drain thereof is connected to a sixth wire. One of a source and a drain of the third transistor is connected to a second wire, the other of the source and the drain thereof is connected to the gate electrode of the second transistor, and a gate electrode thereof is connected to a fourth wire. One of a source and a drain of the fourth transistor is connected to the second wire, the other of the source and the drain thereof is connected to the sixth wire, and a gate electrode thereof is connected to the fourth wire. Full Article
hi High frequency switch By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT There is provided a high frequency switch having a reduced circuit scale while maintaining satisfactory harmonic characteristics in a transfer path of a high frequency signal. The high frequency switch includes: at least one transmission port; at least one reception port; a common port; transmission side series switches each including a body contact type FET; transmission side shunt switches each including a body contact type FET; reception side series switches each including a body contact type FET; and reception side shunt switches each including at least one floating body type FET. Full Article
hi Quarter wave plate polarizer with two phase-shifting portions By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A right circular cylindrical body of an isotropic dielectric such as a cross-linked styrene copolymer, has respective pluralities of mutually parallel grooves formed in its axial end faces, spaced apart by an intermediate portion whose dimension c is a half wavelength. The axial lengths a, b of the grooves are such that when a wave passes through the body, a quarter wavelength phase difference is produced between a component of a wave having its E-vector parallel to the grooves and a component of the wave having its E-vector orthogonal to the grooves. Alternatively the plate may consist of two or more discrete bodies whose grooves are dimensioned to produce a total differential phase shift of one quarter wavelength. Full Article
hi Attenuation reduction control structure for high-frequency signal transmission lines of flexible circuit board By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT An attenuation reduction control structure for high-frequency signal transmission lines of a flexible circuit board includes an impedance control layer formed on a surface of a substrate. The impedance control layer includes an attenuation reduction pattern that is arranged in an extension direction of the high-frequency signal transmission lines of the substrate and corresponds to bottom angle structures of the high-frequency signal transmission lines in order to improve attenuation of a high-frequency signal transmitted through the high-frequency signal transmission lines. An opposite surface of the substrate includes a conductive shielding layer formed thereon. The conductive shielding layer is formed with an attenuation reduction pattern corresponding to top angle structures of the high-frequency signal transmission lines. Full Article
hi High frequency electronic component By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT An electronic component includes: a first circuit connected to a first common terminal for inputting/outputting a first signal set, a second common terminal for inputting/outputting a second signal set having a frequency higher than the first signal set, and a third common terminal for being connected to an antenna; and a second circuit connected in parallel to the first circuit between the first and second common terminals, wherein the first circuit includes a first filter transmitting the first signal set and reflecting the second signal set, and a second filter transmitting the second signal set and reflecting the first signal set, the third common terminal is located between the first and second filters, and the second circuit reflects a first transmission signal and a second transmission signal, transmits parts of the first and second transmission signals, and inverts phases of the parts of the first and second transmission signals. Full Article
hi 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
hi Coupling structure for multi-layered chip filter, and multi-layered chip filter with the structure By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A coupling structure for a multi-layered chip filter includes a resonator layer including a resonator pattern with spaced areas and a coupling layer including at least two separated overlap portion patterns overlapped with the spaced areas of the resonator pattern respectively and a connecting portion pattern having multiple linear portions connecting the separated overlap portion patterns in an area not-overlapped with the resonator pattern. Full Article
hi Electronic dobby-and-jacquard-loom weaving machine and weaving method By www.freepatentsonline.com Published On :: Tue, 05 Aug 2014 08:00:00 EDT The present invention discloses an electronic-dobby-and-jacquard-loom weaving machine and a weaving method. The machine comprises a weaving body, a first warp beam, a second warp beam, a jacquard loom, a dobby loom, a harness frame, a plurality of first harness wires, a plurality of second harness wires, a plurality of harness cords, a plurality of return springs and at least one weft accumulator, wherein the weaving body and the jacquard loom are connected with a synchronous transmission mechanism between them; the synchronous transmission mechanism comprises a weaving spindle, a main motor encoder, a jacquard loom transmission shaft, a jacquard loom encoder, a gear box and a servo control system. The present invention improves the clarity of the fell (shed), widens the fell, keeps the fell clear stably, and realizes high-density jacquard weaving. Full Article
hi Weaving finishing device By www.freepatentsonline.com Published On :: Tue, 12 Aug 2014 08:00:00 EDT A dynamic finishing device that is able to finish one side of a product independently of a second side of the product while the product is being woven is provided. The sides may be finished in a non-linear fashion by the dynamic finishing device. Additionally, one or more finishing devices can be dynamically positioned in an interior portion of the woven product as it is being woven. Once positioned, the finishing devices may create apertures, pockets, and/or tunnels in the woven product and finish the edges of these creations. Finishing in the interior portions of the woven product occurs in the direction of the warp and in the direction of the weft. Full Article
hi Structured fabric for use in a papermaking machine and the fibrous web produced thereon By www.freepatentsonline.com Published On :: Tue, 19 Aug 2014 08:00:00 EDT A papermaking machine for the production of a fibrous web including a plurality of rollers and a structured fabric moving along the rollers. The structured fabric includes a plurality of weft yarns and a plurality of warp yarns woven with the plurality of weft yarns to produce a weave pattern, the plurality of warp yarns being a plurality of paired warp yarn sets. Each paired warp yarn set including a first warp yarn and a second warp yarn. Within the weave pattern the first warp yarn forms a float over at least four weft yarns and weaves with a single weft yarn immediately adjacent with the float. The second warp yarn having an inverse pattern to the first warp yarn, with the second warp yarn weaving with another single weft yarn that is not adjacent to the single weft yarn with which the first warp yarn is woven. Full Article
hi High-speed safety heald shaft By www.freepatentsonline.com Published On :: Tue, 26 Aug 2014 08:00:00 EDT Guard elements (31) are provided for the corner connectors (16 through 19) of a heald shaft (10) of a shedding unit, the guard elements covering the open space formed between the two legs (26, 27) and thus providing a grip protection. Full Article
hi Gripper head for the insertion of weft threads on a gripper weaving machine By www.freepatentsonline.com Published On :: Tue, 04 Nov 2014 08:00:00 EST A gripper head for the insertion of weft threads on a gripper weaving machine as well as a gripper weaving machine with such a gripper head. The gripper head thread clamp for the weft thread is controlled in a contact-free manner and with high transfer reliability of the weft thread even in the machine center. Full Article
hi Manufacturing method of medical textiles woven from chitosan containing high wet modulus rayon fibre By www.freepatentsonline.com Published On :: Tue, 02 Dec 2014 08:00:00 EST An anti-“Methicillin-Resistant Staphylococcus Aureus (MRSA)” chitosan containing antibacterial High Wet Modulus (HWM) rayon fiber textile for medical usage is made of the steps as following: chitin flakes made from natural shrimp or crab shells are deacetylated to generate chitosan with a high deacetylation degree of 90% or more. Next chitosan is dissolved in acetic acid and regenerated by caustic soda to form a chitosan antibacterial nanoparticles slurry, then added to HWM viscose rayon process, and spinning to produce a chitosan containing antibacterial HWM rayon fiber. The antibacterial amino groups of chitosan and the hydroxyl groups of rayon cellulose combine together via hydrogen bonding. Therefore, the fiber becomes the anti-MRSA antibacterial HWM rayon fiber containing amino groups (—NH3+). Finally the resulting HWM rayon fiber is conducted via a yarn spinning or/and weaving process to procure a medical textile with chitosan content. Full Article
hi High strength ultra-high molecular weight polyethylene tape articles By www.freepatentsonline.com Published On :: Tue, 09 Dec 2014 08:00:00 EST Processes for the production of high strength polyethylene tape articles from high strength ultra-high molecular weight multi-filament yarns, and to the tape articles, fabrics, laminates and impact resistant materials made therefrom. Full Article
hi Weaving machine having movable shed opening limiter device By www.freepatentsonline.com Published On :: Tue, 27 Jan 2015 08:00:00 EST A weaving machine for producing a woven fabric has a shedding device to form a loom shed of warp material, a weft insertion device for inserting a preferably tape-shaped or band-shaped weft material into the loom shed, a drawing-off device for drawing off the finished fabric in a drawing-off direction, fabric movement device for moving the fabric back and forth in the warp direction to bring the last inserted weft material into contact with the binding point or fabric edge. A shed limiter device limits the opening of the loom shed from above and below the warp, and is movable back and forth in the warp direction. The shed limiter device only loosely bounds the fabric and essentially without actively clamping or pinching or contacting the fabric and/or the last inserted weft material, at least while moving in the direction opposite the drawing-off direction. Full Article
hi Weaving method and loom for implementing this method By www.freepatentsonline.com Published On :: Tue, 10 Feb 2015 08:00:00 EST The loom includes a weaving area (18) into which weft threads are inserted into at least one upper channel and one lower channel, each of these weft threads being inserted between at least two warp threads by at least one weft insertion element: first element for focusing on one of these channels and determining the position of the warp threads relative to the weft thread, and second element for inserting at least one binding thread (16) above, between and below these channels. The loom includes at least one element for gripping the at least one binding thread and element for moving the at least one gripping element out of and into the weaving area (18) so as to place the at least one gripping element in contact with the at least one binding thread and to allow the drawing of the at least one binding thread. Full Article
hi Connecting rod for a weaving loom and weaving loom comprising this connecting rod By www.freepatentsonline.com Published On :: Tue, 10 Mar 2015 08:00:00 EDT The connecting rod (6) for two articulations with parallel axes and for transmitting the rocking movements of an output lever of a shedding device to a heald frame belonging to a weaving loom, having a first connecting tip connecting to a first articulation and secured to a longitudinal bar, a second connecting tip (62) connecting to a second articulation and including members for clamping the bar that are accessible from one side of the connecting rod, and members (64) for separating the tips along a longitudinal axis (X6) of the connecting rod. The separating member having a bearing member (640) on an inclined surface (612; 630) whereof the normal is comprised in a plane (P6) perpendicular to the axes of the articulations and is inclined relative to the longitudinal axis (X6) of the connecting rod, while the bearing member (640) can be moved in a direction perpendicular to a plane (P34) containing the axes (X3, X4) of the articulations. Full Article
hi Battery system for vehicle By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A battery system for a vehicle is provided with discharge circuits (R1, 129A through 129D, 128A through 128D) that discharge battery cells (BC1 through BC4) via measurement lines of those battery cells (BC1 through BC4). A control circuit transmits to an integrated circuit (3A) a first discharge command that causes discharge of the odd numbered battery cells (BC1 and BC3) of a cell group (GB1), a first transmission command that causes transmission to the control circuit of the terminal voltages of only the odd numbered battery cells (BC1 and BC3) measured during execution of the first discharge command, a second discharge command that causes discharge of the even numbered battery cells (BC2 and BC4) of the cell group (GB1), and a second transmission command that causes transmission to the control circuit of the terminal voltages of only the even numbered battery cells (BC2 and BC4) measured during execution of the second discharge command; and, based on the these various terminal voltages transmitted from the integrated circuit (3A), the control circuit diagnoses abnormalities in the system that includes the battery cells, the measurement lines, and the discharge circuits. Full Article
hi Method to facilitate opportunity charging of an electric vehicle By www.freepatentsonline.com Published On :: Tue, 19 May 2015 08:00:00 EDT A method for electrically charging a high-voltage battery of a subject vehicle includes resolving a geographic location of the subject vehicle at a remote charging site, electrically charging the high-voltage battery through a connection of the subject vehicle to an electric power outlet at the remote charging site, monitoring cumulative electric power flow to the high-voltage battery of the subject vehicle, communicating the cumulative electric power flow to a central server, and reconciling billing for the cumulative electric power flow between an owner of the subject vehicle and an owner of the remote charging site. Full Article
hi Direct feeding apparatus for impedance matching of wireless power transmission device, and transmitter and receiver using the same By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A direct feeding apparatus for impedance matching of a wireless power transmission device includes a helical type resonator, and a feeding unit configured to directly feed power to a region having a relatively small current value as compared to a center of a conductive line of the resonator. Full Article
hi Systems and methods for in-vehicle charging of pallet jack batteries By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Systems and methods for in-vehicle charging of pallet jack batteries are provided. An example system allows using a power source of a host vehicle configured to provide power at voltage levels lower than the operating voltage of the pallet jack battery stack. The system may allow, for example, charging a 24 volts pallet jack battery stack from a 12 volts power source of the host vehicle. The system may further comprise an interconnecting circuit having a plurality of contactors electrically coupling the batteries in parallel for charging and serially for discharging. The system may further comprise a voltage monitoring circuit to detect whether the pallet jack is connected to the host vehicle power source for charging. Based on the detection, the voltage monitoring circuit may reconfigure the interconnecting circuit to electrically couple the pallet jack batteries in parallel. Full Article
hi Discharge device and discharge method for the active discharge of a capacitor for use in the electric-power system of an electric-drive vehicle By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT A discharge device actively discharges a main capacitor in an electric-power system of an electric-drive vehicle and comprises a discharge branch of a circuit connected in parallel to the capacitor and including a discharge transistor biased to “conduction” mode when the capacitor must be discharged. A control device is connected to a “gate/base” terminal of and controls the transistor, biasing the transistor to the mode when the capacitor is required to fee discharged. A control transistor maintains the discharge transistor in a “non-conductive” state when the control transistor is in the mode. The control transistor is in the state for the discharge transistor to be in the mode. A safety capacitor is interposed between the terminal and a power supply and charges when the discharge transistor is in the mode, causing a progressive decrease of current at the terminal, until the discharge transistor is biased to the state. Full Article
hi Aggregation server for grid-integrated vehicles By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT Methods, systems, and apparatus for aggregating electric power flow between an electric grid and electric vehicles are disclosed. An apparatus for aggregating power flow may include a memory and a processor coupled to the memory to receive electric vehicle equipment (EVE) attributes from a plurality of EVEs, aggregate EVE attributes, predict total available capacity based on the EVE attributes, and dispatch at least a portion of the total available capacity to the grid. Power flow may be aggregated by receiving EVE operational parameters from each EVE, aggregating the received EVE operational parameters, predicting total available capacity based on the aggregated EVE operational parameters, and dispatching at least a portion of the total available capacity to the grid. Full Article
hi Battery module, electric vehicle, authentication apparatus, and discharging control method for battery module By www.freepatentsonline.com Published On :: Tue, 26 May 2015 08:00:00 EDT There is provided a battery module including: a power storage unit storing power; a first authentication unit carrying out first authentication via a first authentication route; a second authentication unit carrying out second authentication via a second authentication route; and a discharging control unit controlling discharging from the power storage unit to an external appliance, wherein the first authentication unit is operable, when the first authentication has succeeded, to share key information to be used in the second authentication with an authentication party for the second authentication, the second authentication unit carries out the second authentication using the key information shared with the authentication party, and the discharging control unit is operable, when the second authentication has succeeded, to permit discharging from the power storage unit. Full Article
hi Doubly-fed generator and doubly-fed electric machine By www.freepatentsonline.com Published On :: Tue, 25 Nov 2014 08:00:00 EST The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices. Full Article
hi Vehicle rotary electric machine capable of safely starting synchronous rectification By www.freepatentsonline.com Published On :: Tue, 25 Nov 2014 08:00:00 EST A rotary electric machine for a vehicle that is capable of starting synchronous rectification through switching elements after having ensured absence of a short circuit fault. The rotary electric machine includes a multi-phase armature winding, a switching element set that includes a plurality of pairs of upper-arm and lower-arm switching elements to form a bridge rectification circuit together with the armature winding, an on/off-timing setter that sets on/off-timing of each switching element, a switching element driver that drives each switching element at the on/off-timing set by the on/off-timing setter; and a synchronous control start determiner that determines timing when an energization period for the upper-arm switching element and an energization period for the lower-arm switching element occur alternately as start timing of the synchronous rectification. Full Article
hi Fault tolerant electrical machine By www.freepatentsonline.com Published On :: Tue, 09 Dec 2014 08:00:00 EST A fault tolerant electrical machine including: a plurality of phases; a detector arranged to detect a fault in at least one of the phases; and a controller arranged to intentionally cause a fault in at least one other of the phases such that the vector sum of the second harmonic power vectors of the remaining phases is zero. Full Article
hi EPGS architecture with multi-channel synchronous generator and common unregulated PMG exciter By www.freepatentsonline.com Published On :: Tue, 16 Dec 2014 08:00:00 EST A generator system includes a generator having a stationary portion and a rotating portion. The generator includes a permanent magnet based exciter with permanent magnets disposed on the stationary portion. A first channel includes a first main field winding and a first main field power converter disposed on a rotating portion. The first main field power converter selectively delivers voltage from the exciter winding to the first main field winding. A second channel includes a second main field winding and a second main field power converter disposed on the rotating portion. The second main field power converter selectively delivers voltage from the exciter winding to the second main field winding. A generator control unit is connected to the first channel and the second channel. The generator control unit monitors an output voltage at each of the first channel and the second channel and generates the first and second control signals based on the output voltage. Full Article
hi System and method for determining pole shift By www.freepatentsonline.com Published On :: Tue, 16 Dec 2014 08:00:00 EST A generator airgap monitoring system includes a first proximity sensor disposed in a first location of a stator and configured to transmit a first signal representative of a first distance between the first proximity sensor and a plurality of rotor poles of a rotor, and a controller communicatively coupled to the first proximity sensor. The controller is configured to derive a first plurality of instantaneous airgaps based on the first signal and to determine a difference between a first instantaneous airgap of the first plurality of instantaneous airgaps and a second instantaneous airgap of the first plurality of instantaneous airgaps. The first plurality of instantaneous airgaps includes a first plurality of measurements of airgaps between the stator and the plurality of rotor poles when the rotor is rotating. The first instantaneous airgap and the second instantaneous airgaps include measurements for respective rotor poles. Full Article
hi Mixed mode power generation architecture By www.freepatentsonline.com Published On :: Tue, 06 Jan 2015 08:00:00 EST An electric power generation system (EPGS) employs both a wild-source generator and a variable and/or constant frequency generator. The wild-source generator is coupled to receive mechanical power from a low-pressure spool on an aircraft engine and to generate in response a wild-source output for consumption by voltage and frequency-tolerant loads. The variable and/or constant frequency generator is coupled to receive mechanical power from a high-pressure spool on the aircraft engine and to generate in response a variable and/or constant frequency output for consumption by voltage and frequency-intolerant loads. Full Article
hi Electric rotary machine for motor vehicle By www.freepatentsonline.com Published On :: Tue, 06 Jan 2015 08:00:00 EST An alternator has rectifying module groups. The rectifying module groups form a bridge circuit. The rectifying module groups have a load dump protection judgment section for monitoring an output voltage of rectifying module groups. When the monitored output voltage exceeds a first threshold voltage, the load dump protection judgment section provides to a control section an instruction to turn on MOS transistors in a lower arm of the bridge circuit at a time when a predetermined delay time has elapsed. When a second threshold voltage is lower than the first threshold voltage and the monitored output voltage becomes less than the second threshold voltage after the monitored output voltage exceeds the first threshold voltage, the load dump protection judgment section provides to the control circuit an instruction to turn on the MOS transistors in the lower arm after the MOS transistors are turned off during a predetermined time length. Full Article
hi Systems for wound field synchronous machines with zero speed rotor position detection during start for motoring and improved transient response for generation By www.freepatentsonline.com Published On :: Tue, 06 Jan 2015 08:00:00 EST An electrical machine includes a stator having a main armature winding, an exciter field winding, and a transformer primary winding. A rotor is operatively connected to rotate relative to the stator, wherein the rotor includes an exciter armature winding operatively connected to the exciter armature winding for field excitation therebetween, a main field winding operatively connected to the main armature winding for field excitation therebetween, and a transformer secondary winding operatively connected to the transformer primary winding to form a rotating transformer. A generator control unit is operatively connected to the main armature winding, exciter field winding, and transformer primary winding to control the main armature and exciter field windings based on excitation in the primary winding received from the transformer secondary winding. Full Article
hi Method and device to compensate for a dip in the output voltage of a motor-vehicle alternator By www.freepatentsonline.com Published On :: Tue, 24 Feb 2015 08:00:00 EST A dip in the output voltage of a motor-vehicle alternator, owing to a connecting of a load or a change in speed, is compensated with the aid of an alternator regulator which provides a control signal that has a duty factor and increases the excitation current of the motor-vehicle alternator. After the occurrence of the voltage dip, in a first step, the duty factor of the control signal is increased by a differential amount, and in a subsequent second step, the rate of correction is limited. After the occurrence of the voltage dip, parameters describing the instantaneous working point of the motor-vehicle alternator are determined, and in the first step, the differential amount is set as a function of the working point. Full Article
hi Power supply system for motor vehicle provided with control device of voltage applied to field coil of generator By www.freepatentsonline.com Published On :: Tue, 17 Mar 2015 08:00:00 EDT A power supply system for a motor vehicle includes a generator that includes a rotor having a field coil and a stator having an armature coil; a rectifier that rectifies AC power generated in the armature coil; an excitation control circuit that takes control of a voltage applied to the field coil; a capacitor that is connected to the DC side of the rectifier, and receives and transfers the rectified power; a battery connected to an electric load of the motor vehicle; a DC-DC converter that is connected between the capacitor and the battery and capable of converting unidirectionally or bidirectionally an input DC voltage into any DC voltage; and a selection switch which connects the capacitor or the battery to the excitation control circuit as a power supply source. Full Article