ai

Train platform safety device

Disclosed herein is a train platform safety device. The train platform safety device is installed at a position corresponding to a safety line on a subway or railway platform and is configured such that wire ropes are moved upwards or downwards depending on conditions in which a train approaches or departs from the platform, thus preventing a passenger from intentionally or unintentionally falling onto the train track. Particularly, the distances that the wire ropes move upwards or downwards are determined by rotating a rotating unit including rotating members having different diameters, whereby the wire ropes overlap each other or spread from each other. In this way, the wire ropes allow or block access of passengers depending on conditions in which a train approaches or departs from the platform, thus fundamentally preventing a safety accident.




ai

Bogie for guide rail type vehicle

The present invention provides a bogie for a guide rail type vehicle that runs along a predetermined guideway. The bogie includes a turn frame connected to a vehicle body; an axle turnably mounted to the turn frame via bearings and; a guide frame mounted to the axle; a first pair of guide wheels rotatably provided at a vehicle body end side portion of the guide frame; a second pair of guide wheels rotatably provided at a vehicle body center side portion of the guide frame; a stopper provided so as to project from an upper surface on a vehicle body side of the axle toward the vehicle body; and a pair of stopper receivers arranged facing each other at intervals from the stopper in a vehicle lateral direction.




ai

Rail guided vehicle system

A rail guided vehicle system includes a rail that includes a first main rail, a second main rail, and a connection rail, and vehicles. Each vehicle includes a diverging roller supporting member that supports a pair of first and second diverging rollers such that the first and second diverging rollers shift, and a position stabilizing roller supporting member that supports position stabilizing rollers such that the position stabilizing rollers do not shift. The rail includes a first diverging guide configured to guide the first diverging roller, a second diverging guide configured to guide the second diverging roller, and a position stabilizing roller guide configured to guide the position stabilizing rollers in the no-guide zone where the diverging guide is absent.




ai

Stratosphere tethered photovoltaic power platform

The present invention is realized by apparatus and methods for placing a large utility scale photovoltaic array in the low stratosphere of earth's atmosphere at an altitude of about 20 km, above clouds, moisture, dust, and wind. This is accomplished using a large light-weight, rigid, buoyant structure to support the large photovoltaic array. Long, strong and light tethers connect the buoyant structure to the ground and hold it in position against wind forces. The electricity output from the photovoltaic array is then coupled to high voltage transmission lines which connect from the platform to the earth's surface. The electricity is then transmitted through the high voltage transmission lines to the earth's surface where it is connected to the electrical supply grid and provides lower cost, more reliable electricity.




ai

Vehicle sling bag rail system

An embodiment of the present disclosure provides a vehicle having a cargo area that includes an internal surface. A longitudinally extending bar is located within the cargo area of the vehicle. A bag configured to hang onto and slide along the longitudinally extending bar. A movable rail assembly is attached to the internal surface and includes: a rail moveable between extend and retract positions with respect to the cargo area; a bearing engageable with the rail to assist moving the rail between the extend and retract positions; and a bracket attachable to the bearing to suspend the bearing and the rail in the cargo area and away from the internal surface.




ai

Lightweight rerailer

A rerailer device for rerailing a railway vehicle onto a track, the device including a body with a ramp adapted to support a wheel of a railway vehicle thereon, a sloped face provided on said body and being configured with a slope that declines in a preferred direction toward the track on which the railway vehicle wheel is to be rerailed, and support means for supporting said sloped surface and railway vehicle wheels thereon, where the support configuration, material or combinations of configurations and materials facilitate lightweight construction.




ai

Railway snow melter duct assembly

The present disclosure relates to a component for a railway snow melter. The component includes a mounting plate adapted for connection to a tie duct. The mounting plate defines a point nozzle opening and/or a track duct nozzle. A point nozzle is mounted to the mounting plate at a location above the point nozzle opening. A track duct nozzle is mounted to the mounting plate at a location above the track duct nozzle opening.




ai

Railroad tie removal machine

A railroad tie removal machine for removing a railroad tie from beneath a pair of rails. The machine includes a movable frame, wherein when the frame is in a stationary location, a workspace is defined with respect to the stationary frame. A tie shear workhead and a kicker workhead are both mounted to the frame. The tie shear workhead includes two sets of shears configured and arranged to divide the tie into a center portion and two outer portions. The kicker workhead includes at least one kicker configured and arranged to outwardly kick corresponding outer portions of the cut tie from under the associated rail.




ai

Apparatus and method of manufacturing pressure compensator type drip irrigation tubes with desired molecular orientation and tubes obtained thereby

A method for manufacturing high speed pressure compensator-type drip irrigation tubes and the tubes obtained thereby having absolute radial orientation of molecular chains, the orientation imparting strength as well as flexibility to the tube material. The said method comprises extruding a tube using a plurality of extruders; blowing up the extruded tube by introducing a pressure inside the tube relatively higher than the pressure outside the tube; drawing the blown tube simultaneously to the blowing of tube; flattening the blown tube by heat welding the collapsed halves together and forming a tape immediately, subsequent to the process of blowing and drawing the tube; extrusion of a bonding polymer on one border of the tape; printing flow channels into the hot and viscous bonding polymer; and forming a tube by lengthwise folding the tape and heat welding the overlapping borders together using the bonding polymer.




ai

Spray containment device and methods of use

A spray containment device comprising: a threaded adapter, a conical body having a threaded aperture wherein the threaded aperture is adapted to cooperate with said threaded adapter, and (c) at least one threaded nut adapted to thread onto the threaded adapter above the conical body so as to secure the conical body to the threaded adapter. Also included is a sprayer device comprising a liquid container and a spray wand to which the spray containment device may be attached. The threaded adapter and nut system could be utilized to attach threads to other types of pipes, rods or similarly shaped pieces.




ai

Fluid level indicator in an airless fluid sprayer

The present disclosure generally relates to systems and devices for spraying fluid materials such as paints, stains, and the like, and more specifically, but not by limitation, to a fluid level indicator for an airless fluid sprayer. In one example, an airless fluid sprayer is provided and includes a fluid container, a controller, and a fluid level indication module implemented by the controller to generate an indication of a level of fluid material in the fluid container.




ai

Air spray gun with pattern control tip

A spray gun includes a main piston chamber having an actuatable piston and a gun block. The gun block includes a mixing chamber that has a pair of impingement holes that each tangentially intersects with an exit hole of the mixing chamber at opposing tangential points. The gun block also includes a tip that is coupled to an end of the mixing chamber and has a pattern channel that is substantially axially aligned with the exit hole of the mixing chamber. The length of the pattern channel is less than the length of the exit hole of the mixing chamber. In some versions, the ratio of the pattern channel to the combined length of the pattern channel and exit hole can be between 31%, inclusive, and 5%, inclusive. A selectively coupleable handle may be provided such that users can utilize different handles with the spray gun.




ai

Air seal for server rack

An air seal for a server rack installed in a data center which delivers cool air to the fronts of racks and removes warm air at the back, where one or more of the racks are elevated by wheels or legs. A seal support member of rigid plastic and of right angle cross section has a horizontal portion and a vertical portion. The horizontal portion is adhesively secured to a downwardly facing surface at the bottom front and/or back of the rack. The horizontal portion is recessed at opposite ends to accommodate wheels or legs at opposite sides of the rack. The vertical portion extends across the full width of the rack and projects downward. A sealing strip of EPDM foam is adhesively secured to the vertical portion and is held flexed against the floor, forming a seal against the flow of by-pass air underneath the rack.




ai

Spacer and gasket assembly for use on an aircraft

A spacer and gasket assembly is shown for receipt between a static structure having an outer and inner surface and fastener holes therethrough and a removable structure having a base with fastener holes and an upper surface and a lower surface. The static structure and removable structure are engaged through a multiplicity of fasteners having a shaft diameter. The fasteners are adapted to apply a compression on the gasket between the static structure and the removable structure. The static structure and the removable structure have opposed, typically flat, facing walls. The spacer and gasket assembly comprising a substantially non-compressible spacer adapted for receipt between the static structure and the removable structure having a spacer thickness. A gasket has a deformable, flowable, elastomeric body and a skeleton having a skeleton thickness, the skeleton substantially integral with the body. The gasket has an uncompressed gasket thickness. The spacer and the gasket are adapted to be placed substantially between the facing walls of the static structure and the removable structure and the removable structure will compress and deform the gasket when the fasteners are torqued down.




ai

Train axle assembly

A train axle assembly includes a train axle, a ring assembly coaxially mounted on the train axle and a structure operatively engaged by the ring assembly and mounted on the train axle. The ring assembly has an outer diameter and a main section adjacent the outer diameter. The ring assembly includes a projection extending axially from the main section which is located at a diameter less than the outer diameter of the ring assembly. The projection has a portion of a diameter contacting the train axle so that the ring assembly is affixed to the train axle to provide resistance to relative rotation and axial movement between the ring assembly and the train axial.




ai

Air baffles in railroad tunnels for decreased airflow therein and improved ventilation and cooling of locomotives

Disclosed is a system and method for decreasing airflow and improving ventilation within a tunnel, such as a railroad tunnel, including a path for movement of a vehicle (e.g., train) therethrough. The system has a plurality of air baffles mounted within the tunnel, each device comprising a body and a mounting device. Each mounting device positions each body inside and along the length of the tunnel between the entrance and the exit. The air baffles are configured to restrict airflow at least in part in a longitudinal direction of the tunnel, thereby increasing a relative difference between a vehicle speed and air speed in a tunnel annulus when the vehicle passes through the tunnel. The restriction (e.g., decrease) of airflow in the tunnel reduces the piston effect resulting from the vehicle or train passing through, thus reducing emissions and heat generated by the locomotives in the tunnel.




ai

Airflow control apparatus

An adjustable blocking arrangement for electronic hardware or computer racks, for preventing the undesired leakage of air through rack spaces not filled with hardware. An airflow control device is provided comprising a flexible web and a magazine adapted to receive the part of the flexible web that is not deployed. The device is adapted such that a length of the web may be deployed to sealingly block a space in the rack that is not filled with hardware modules, to prevent the flow of air through the space. The device may comprising a detection system adapted to detect the space in the rack that is not filled with hardware modules, and a processing system adapted to receive a signal from the detection system, and as a function of the signal to automatically deploy or retract the flexible web so as to sealingly block the space.




ai

Aircraft nacelle including an optimised acoustic processing system

An aircraft nacelle including a pipe (32), a peripheral wall (34), a lip (36), and a front frame (38) connecting the peripheral wall (34) and the pipe (32) and forming with the lip (36) a space (50) in which the hot air that is provided for frost treatment can circulate, with the pipe (32) including a coating (44) for the composite material acoustic treatment, is characterized in that the nacelle includes at least one element (52) made of a heat-conducting material inserted between the lip (36) and the pipe (32) ensuring the continuity of the aerodynamic surfaces of the lip (36) and the pipe (32) and the propagation of heat from the space (50) toward the rear of the nacelle, whereby the at least one element (52) includes a coating (54) for acoustic treatment that is made of a heat-resistant material.




ai

Systems and methods for optimizing low frequency output from airgun source arrays

Systems and methods for optimizing low frequency output of marine sources are described. The marine source arrangements and associated methods disclosed herein seek to fully frequency lock bubbles emitted by airguns in close proximity to one another. In this manner, larger effective bubble volumes can be achieved, thus increasing low frequency output.




ai

Acoustic container

Methods and devices are disclosed for a gaseous liquid to audibly deform the shape of a closed container. One embodiment includes pushing inward to depress a plurality of deformations integral with an exterior of the plastic container having a bottom, a top, the exterior, and an interior, wherein the top is at least partially opened. Further, the method includes sealing, subsequent to the depressing, the top to close the plastic container. Further still, the method includes pushing outward, subsequent to the sealing, by carbonation from a carbonated liquid contained within the interior, on the plurality of deformations. Yet further, the method includes deforming, by the pushing outward, at least two of the plurality of deformations to displaced positions. The method also includes creating two or more sounds and/or movement by the deforming.




ai

Sound suppressor device for an air drying unit of a compressed-air supply system

A sound suppressor device for an air drying unit of a compressed-air supply system having a sound suppressor housing on which is arranged an inlet opening for the supply of condensate-laden compressed air to be discharged from the air drying unit and at least one outlet opening for the discharge of the condensate-laden compressed air to the outside, wherein the inlet opening issues into at least one pre-chamber of the sound suppressor housing, which pre-chamber issues into post-chambers which are connected in parallel and which are arranged around a heating rod arranged centrally in the sound suppressor housing.




ai

Thermal-acoustic sections for an aircraft

Embodiments of thermal-acoustic sections for an aircraft for reducing noise along an acoustic path produced from an acoustic source are provided herein. The thermal-acoustic section comprises a first porous layer having a first characteristic acoustic impedance. A second porous layer is disposed adjacent to the first porous layer and has a second characteristic acoustic impedance that is greater than the first characteristic acoustic impedance. The thermal-acoustic section is configured to be positioned along the acoustic path such that at least a portion of the noise from the acoustic source is directed through the first porous layer to the second porous layer to promote absorption of the noise.




ai

Gun dog training tool and method

A gundog training tool prevents gun shyness by gradually allowing a pup to adapt to the sound of a gunshot. A pop gun shoots treats upon creating a simulated gunshot so that the dog grows used to the sound of a gunshot and creates positive reinforcement rewarded by the treat. As the pup learns, a charge in a housing is introduced to provide a simulated gunshot that expels a treat that trains the dog to feel excitement at the sound and smell of a gunshot. The size of the charge adjusts to create louder simulated gunshots as the pup learns so that the pup is prepared for introduction to actual gunshots, such as from a shotgun shooting at a bird.




ai

Method of and system for managing a group of dairy animals

The present invention relates to a system and method of managing a group of dairy animals. More particularly, the invention relates to measuring one or more milk parameters, comparing this parameter to a criterion, and allowing an animal access to a pasture based on this comparison. The milk parameter is related to the composition of milk obtained from a dairy animal in as far as the composition is defined by at least one of the amount of protein and the energy intake of the dairy animal. The measured milk parameter is, for example, urea. Access to the pasture will be completely or partly blocked for a dairy animal having a high content of urea. This dairy animal is thus prevented from taking in an undesirably large amount of protein.




ai

Apparatus for preventing entanglement of a pair of lines fed from separate reels

A multi-reel, line-handling apparatus can include a housing, a shaft located within the housing, the shaft defining a shaft axis, a first reel located within the housing, the first reel rotatably mounted to the shaft about a first reel axis angled with respect to the shaft axis, and a second reel located within the housing, the second reel rotatably mounted to the shaft about a second reel axis angled with respect to the shaft axis. The first reel and the second reel can be rotatable with respect to the housing about the shaft axis.




ai

Aquarium with a self-contained cleaning apparatus

The present invention relates to an aquarium cleaning apparatus, systems and methods for removing debris from the aquarium, and in particular, a self-contained cleaning apparatus that utilizes a siphon effect created by pouring water in an aquarium tank and/or pulling water out of an aquarium tank, such as via a vacuum. In a preferred embodiment, the siphon operation occurs because of the difference between the water level of the aquarium tank and the vertical height of a spout attached to the top of a vertical tube. Therefore, it is not necessary for the user to immerse their hands in the aquarium water to operate the cleaning device.




ai

Method and device for milking a dairy animal

The invention relates to a device for and method of milking dairy animals, in particular cows. The device and method have been improved in order to enhance the efficiency of use. In one embodiment, for the milking, teat cups are connected by means of a robot arm to respective teats of the dairy animal. This makes it possible to start the milking of the teats of the dairy animal. A milk flow from the respective teat can be measured. The milking can be ended by means of a control unit in dependence on a comparison value which is calculated on the basis of a milking parameter representative of a milk flow from the respective teat and in dependence on a deactivation threshold. According to the invention, the milking of the last teat is ended in dependence on a last-teat period to be calculated.




ai

Microcosm terrestrial and aquatic landscape habitat: a freestanding “miniature mountain” chain, topiary, upper pool, waterfall and pond-aquarium hybrid habitat with natural curves

The “Microcosm Terrestrial and Aquatic Landscape Habitat” is a Main Basin Pond 4 surrounded on three sides by artificial rock, “Miniature Mountains” 3 a, 3 b, 3 c or Natural Looking Imitation Rocks. The fourth, front side has no “Miniature Mountains” or Natural Looking Imitation Rocks to enclose the Main Basin Pond. Instead, here I adhere on a Pane of Glass 2 a to the imitation rock surface using Silicon Sealant 2 b or other sealants 2 c: A pond-aquarium hybrid! The “Miniature Mountains” are higher than the water level in the Main Basin Pond. On the top or sides of the “Miniature Mountains” is an Upper Pool 5. Water in the Main Basin Pond is circulated up to the Upper Pool using a Submersible; Electric, Aquatic, Pump 8. From the Upper Pool, the Water then flows down a Water Course to the Waterfalls and back to the Main Basin Pond to oxygenate the water.




ai

Web assembly for making and maintaining a contour of a baseball or a softball glove

A web assembly can be used for making and maintaining a contour of a baseball or softball glove. The web assembly comprises a plurality of horizontal straps comprising a top strap and a bottom strap mechanically coupled to a plurality of vertical straps comprising a left strap and a right strap. A right durable strap and left durable strap are mechanically coupled to at least one horizontal strap where the at least one horizontal strap is further mechanically coupled to the right strap and the left strap. In this manner, a user can wrap the web assembly around the glove and affix the right durable strap to the left durable strap with a hook and loop fastener, and allowing for the straps to deform slightly to make and maintain the contour of the glove.




ai

Retail display strap for attaching and displaying two articles of clothing

In accordance with one embodiment, a display strap for displaying a first article of clothing (e.g., a tie) with a second article of clothing (e.g., a hanky, etc.) includes an elongated strap body having a first end and an opposing second end along with a top edge and an opposing bottom edge. The body has a plurality of score lines to permit the elongated body to be folded and the first end be drawn toward the second end. The body further has a locking slit formed therein proximate the first end and a locking tab formed at the second end for reception within the locking slit to form a continuous, folded strap body that captures the first and second articles of clothing for holding thereof at a first location. The display strap has a flag portion that extends upwardly from the top edge of the body and includes an opening formed therein for receiving a fastener that couples the first and second articles of clothing together at a second location that is spaced from the first location.




ai

Pre-threaded and knotted hair weaving needle and method

A pre-threaded and knotted needle with a length of thread knotted though the eye of the needle and a connection securing the ends of the thread and a sleeve securing a bundle of the thread so that the thread is not tangled until it is released and ready for use The thread is bundle is formed by wrapping it into a bundle and securing a sleeve around the bundle of the thread so that the thread is not tangled until it is released and ready for use. The bundle is released for use by pulling on the needle and the end of the thread to release the bundle of thread.




ai

System and method for recycling of carbon-containing materials

There is described a system and method for recycling carbon-containing material, in particular tires and plastics materials. The system includes a heating arrangement for anaerobically heating carbon containing material to produce carbon-containing gases. A condensing arrangement is also used to condense a proportion of the carbon-containing gases to provide condensed gases and non-condensed gases. In addition, a recirculating arrangement is provided for recirculating the non-condensed gases into the heating arrangement. Further systems and methods for pre- and post-processing of the carbon-containing material are also disclosed and products of the systems and methods are also described.




ai

System and method for obtaining hydrocarbons from organic and inorganic solid waste

This invention relates to a system for obtaining hydrocarbons from organic or inorganic solid waste, wherein said system comprises: an inlet chamber, within which is a mixer assembly which mixes and conveys the waste through said chamber, which is also at ambient temperature, thus avoiding any thermal shock to the solid waste for processing; a dehydration chamber with a mixing assembly therein, and the upper part of this chamber contains an expansion chamber for promoting more efficient molecular breakdown; the thermal breakdown is carried out in two reactors which are operated at different temperatures, the first thermal disassociation reactor which has inside a mixer unit, and which in its upper part houses an expansion chamber, the second thermal breakdown reactor, therein has a mixer unit, and in the upper portion thereof houses an expansion chamber and at the top end thereof a vertical expansion tower; wherein the thermolytic steam is homogenized, a separator of heavy hydrocarbons, which does not require an additional cooling system, a multiple valve determines the temperature and oxygen content of the vapors and conveys them to the expansion tower in order to optimize the production of hydrocarbons, and to obtain a liquid hydrocarbon with high heating value.




ai

Process and apparatus for decomposition of polymer products including those containing sulphur such as vulcanised rubber tyres and recovery of resources therefrom

A method and apparatus for pyrolytic destruction of polymer products including whole vehicle vulcanised rubber tires is disclosed. The apparatus 111 has a reaction chamber 153 into which a tire can be placed, and immersed for pyrolytic decomposition in a molten alloy of zinc with a minor proportion of aluminium. The apparatus 111 has a heated reservoir 155 in which the alloy is maintained in a molten state, and from where it can be transferred to the reaction chamber 153 to immerse the tire. Fluid hydrocarbon byproducts are drawn off for condensation and recovery, and solid zinc sulphides are also recovered. Where steel belted tires are processed, carbon and steel residues are also recovered.




ai

Solids removal from bio-oil using biomass filter aid

A green process and system are disclosed for utilizing a biomass filter aid in the filtration of a bio-oil. The process comprises filtering a bio-oil containing residual solids from a conversion reaction in the presence of the biomass filter aid to produce a filtered bio-oil. The biomass filter aid facilitates efficient removal of residual solids from the bio-oil. The spent biomass filter aid containing the residual solids may be recycled as a conversion feedstock or used as a combustion heat source in the biomass conversion system.




ai

Air proportioning system for secondary air in coke ovens depending on the vault vs. sole temperature ratio

A device for proportioning of secondary combustion air into the secondary air soles of coke oven chamber ovens is shown. The device is formed by a slide gate or a parallelepiped device or by plates moved by means of a thrust bar, the thrust bar being moved longitudinally in parallel to the coke oven chamber wall so that the plates move away from the secondary air apertures and open or close these. The thrust bar is moved by means of a positioning motor, with the power transmission being effected hydraulically or pneumatically. Via suitable measuring parameters, it is thus possible to optimize secondary heating so that heating is provided evenly from all sides, thus achieving an improvement in coke quality.




ai

Controllable air ducts for feeding of additional combustion air into the area of flue gas channels of coke oven chambers

A device for feeding and controlling secondary air from secondary air ducts into flue gas channels of horizontal coke oven chambers is shown. The flue gas channels are located underneath the coke oven chamber floor on which coal carbonization is realized. The flue gas channels serve for combustion of partly burnt coking gases from the coke oven chamber. The partly burnt gases are burnt with secondary air, thus heating the coke cake also from below to ensure even coal carbonization. Secondary air comes from the secondary air ducts connected to atmospheric air and to the flue gas channels. Controlling elements are mounted in the connecting channels between the flue gas channels and secondary air ducts which can precisely control the air flow into the flue gas channels. Thereby, it is possible to achieve a much more regular heating and heat distribution in coke oven chambers. The actual controlling devices in the connecting channels can be formed by turnable pipe sections, wall bricks, or metal flaps. It is particularly advantageous to utilize a hump-like facility (tabouret) which sits in the secondary air ducts and which is comprised of a tabouret plate with a central opening that is slid under the corresponding embranchment to regulate the gas stream. The controlling mechanism can be actuated manually, electrically, or pneumatically. Thereby, the controlling device can also be automated.




ai

Rotary system and method for printing containers

A system for digitally printing directly on a plurality of containers is provided. In an embodiment, the system includes a device configured to determine an initial position or orientation of an individual container; a plurality of print heads configured to print directly on said containers; and a plurality of container holders configured hold or retain an individual container, to rotate the individual container, and to maintain a rotational position of the individual container relative to at least one print head while printing occurs; and one or more curing devices. The system may be configured such that the plurality of container holders are configured to move along a linear or curved path, and the plurality of container holders may be configured to controllably rotate about a container axis.




ai

Silk screen printing device with one main actuator

A device (1) for printing an impression by silk screen printing on at least one object (3), comprising of: a chassis (27); an object holder module (5) being movable relative to the chassis along a direction of pressing (Oz); a print head (7) including a screen holder module (29) and a squeegee holder module (31), the print head being movable relative to the chassis between an operating position close to the object holder module, and a maintenance position away from the object holder module, and an actuator (8) having a first part (125) and a second part (127) that is movable relative to the first part (125), the actuator (8) being adapted, in a first mode of operation, to be supported on the chassis by the first part and capable of moving the print head from the operating position to the maintenance position by a movement of the second part. The actuator is adapted, in a second mode of operation, to be supported on the chassis by the second part and is capable of moving the object holder module along the direction of pressing relative to the chassis by a movement of the first part.




ai

PREAMBLE SYMBOL GENERATION AND RECEIVING METHOD, AND FREQUENCY-DOMAIN SYMBOL GENERATION METHOD AND DEVICE

Provided are a preamble symbol generation method and receiving method, and a relevant frequency-domain symbol generation method and a relevant device, characterized in that the method comprises: generating a prefix according to a partial time-domain main body signal truncated from a time-domain main body signal; generating the hyper prefix according to the entirety or a portion of the partial time-domain main body signal; and generating time-domain symbol based on at least one of the cyclic prefix, the time-domain main body signal and the hyper prefix, the preamble symbol containing at least one of the time-domain symbols. Therefore, using the entirety or a portion of a certain length of a time-domain main body signal as a prefix, it is possible to implement coherent detection, which solves the issues of performance degradation with non-coherent detection and differential decoding failure under complex frequency selective fading channels; and generating a hyper prefix based on the entirety or a portion of the above truncated time-domain main body signal enables the generated preamble symbol to have sound fractional frequency offset estimation performance and timing synchronization performance.




ai

DELAY SPAN CLASSIFICATION FOR OFDM SYSTEMS USING SELECTIVE FILTERING IN THE FREQUENCY DOMAIN

It is proposed a method for delay spread classification of an orthogonal frequency-division multiplexing signal (multiplexing signal), and a receiving device and a telecommunication device connected thereto, the multiplexing signal comprising at least a first multiplexing symbol comprising at least two first reference symbols in the frequency domain, the method comprising: receiving at least the first multiplexing symbol; demodulating at least the first reference symbols of the first multiplexing symbol; determining at least a first autocorrelation value by autocorrelating the demodulated first reference symbols in the frequency domain; computing the filtered output energy of the autocorrelation and classifying the delay spread by mapping the ratio of the output energy for the filters.




ai

Fan Motor Controller for Use in an Air Conditioning System

One aspect provides an air conditioning system that includes a compressor housing, a motor having fan blades rotatably coupled thereto and located within the compressor housing. The motor has a rotation sensor associated with it that is configured to sense a rotation of the fan blades. This embodiment further comprises a controller coupled to the motor and is configured to increase a torque of the motor when the rotation sensor indicates that the fan blades are not rotating after an on command signal is received by the motor.




ai

INTEGRATED FUEL CELL AIRCRAFT PRESSURIZATION AND COOLING SYSTEM

According to one embodiment of this disclosure an integrated fuel cell and environmental control system includes a turbo-compressor. The turbo-compressor includes a rotatable shaft, a compressor rotatable with the shaft to generate a flow of compressed air, a motor connected to the shaft, and a turbine connected to the shaft. The system further includes a fuel cell connected to the compressor by a first compressed air supply line that supplies a first portion of the flow of compressed air to the fuel cell. The fuel cell is connected to the turbine by a fuel cell exhaust line that supplies a flow of fuel cell exhaust to the turbine and causes the turbine to rotate. The system further includes an environmental control system connected to the compressor by a second compressed air supply line that supplies a second portion of the flow of compressed air to the environmental control system.




ai

THERMAL ENHANCEMENT OF CABIN AIR COMPRESSOR MOTOR COOLING

A cabin air compressor assembly includes a cabin air compressor, and a cabin air compressor motor operably connected to the cabin air compressor. The cabin air compressor motor includes a rotor and a stator having a plurality of end windings. A cabin air compressor housing includes at least one cooling airflow hole formed therein. A motor cooling flow is movable across a portion of the cabin air compressor motor to cool the stator and the end windings. A duct extends from the cabin air compressor housing to an adjacent end winding such that a cooling outlet flow provided via the at least one cooling air flow hole is arranged in fluid communication with the end winding.




ai

Electrical Control Valve for an Air Conditioning Compressor

A control valve for an air conditioning compressor is disclosed. The control valve comprises a control piston, an electric motor, a sensor, and a control unit. The control piston connects a refrigerant flow between a high-pressure area and a crankcase pressure area of the air conditioning compressor in a first position. The control piston further connects the refrigerant flow between the crankcase pressure area and a low-pressure area of the air conditioning compressor in a second position. The electric motor moves the control piston between the first position and the second position. The sensor determines the position of the control piston. The control unit is connected to the sensor and the electric motor. The control unit controls the electric motor to move the control piston and control the refrigerant flow based on the position of the control piston determined by the sensor.




ai

CONTAINER ASSEMBLY FOR A PUMP

A container assembly (10) for a pump is described, provided with at least one pumping group (12, 14, 16, 18) and with at least one system (20) for transmitting power to such pumping group (12, 14, 16, 18). The container assembly (10) comprises at least one elastic element (26) sealingly housed inside such container assembly (10) at a predefined internal wall (28) thereof. Inside the elastic element (26), at least one cavity (32) is obtained which defines a corresponding air chamber configured for damping the variations of volume and the expansion of the fluid contained inside the pump following a possible change of state of the fluid itself when subjected to temperatures lower than its freezing point.




ai

Coil arrangement for air intake system for gas turbine and methods

An air intake system for a gas turbine includes one or more coils in airflow communication with an inlet arrangement. Each coil is constructed and arranged to have a respective upstream face velocity that is intended to be within 20% of the other coils. Each coil utilizes a working fluid of a predetermined temperature range conveyed there through and a plurality of spaced fins. The fins are spaced apart to permit air to flow between adjacent fins as air flows through the coil. At least one of the coils has a number of fins per inch that is different from the number of fins per inch of the other coils. Alternatively, each individual coil has at least one section with fewer or greater numbers of fins per inch that the other sections of that coil.




ai

Self-cleaning air filtration system

A self-cleaning system and method for removing contaminants captured by an air flow filter media in which a reverse air flow is directed back through the filter media and into an antechamber which is closed during self-cleaning and a vacuum source is connected to the antechamber to quickly evacuate the air in said antechamber containing dislodged contaminants suspended therein.




ai

Regenerative adsorption process for removal of silicon-containing contaminants from process gas using a neutral adsorbent media

A natural gas-containing stream such as biogas from landfills and sewage treatment plants is freed of siloxane contaminants by passing the biogas through a bed containing an adsorbent having a neutral surface, which adsorbs the siloxanes. When the bed of neutral adsorbent is filled to capacity, the adsorbent bed is heated to remove the siloxanes and regenerate the bed. The neutral adsorbent reduces disadvantageous reactions between the adsorbent and siloxane and other impurities in the natural gas-containing stream.




ai

Dresser drive link for saw chain

Embodiments herein provide a drive link having a conditioning portion to be used in conjunction with one or more dresser links of a saw chain to condition a sharpening element. The dresser links may include left and right dresser links configured to contact the sharpening element in first and second contact regions which may not overlap, leaving a gap. The conditioning portion of the drive link may contact the sharpening element in a third contact region that includes at least a portion of the gap between the first and second contact regions.