| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 060435000 | Having a mechanical clutch or brake device in the power train | 25 |
| 20080276609 | DUAL HYDRAULIC MACHINE TRANSMISSION - The modular transmission uses only a pair of small and light hydraulic machines of remarkably improved volumetric efficiency with pistons having body portions substantially as long as the axial length of the respective cylinders in which they reciprocate. The two hydraulic machines operate in a closed loop, one being used as a pump driven by the vehicle's engine, and the other used as a motor. Each machine has a fully articulatable swash plate. By computer control, the angles of the swash plates of the two machines are infinitely varied to provide an appropriate optimum ratio of engine/wheel speed for all conditions from start-up, city driving, hill climbing varied according to load and steepness, and over-drive for highway. This complete vehicle operation is attained while the vehicle's engine continues to operate at relatively constant speeds and relatively low RPM. | 11-13-2008 |
| 20090288408 | HYDRAULIC CIRCUIT, ENERGY RECOVERY DEVICE, AND HYDRAULIC CIRCUIT FOR WORK MACHINE - A hydraulic circuit that enables smooth absorption of the energy of a return fluid from a hydraulic actuator by means of an energy recovery motor. A return fluid passage to which the fluid discharged from a boom cylinder is branched is provided at the tank passage side of a solenoid valve of a boom control circuit. The return fluid passage comprises two return passages, which are provided with a flow rate ratio control valve for controlling a ratio of fluid that branches off into the return passages. The flow rate ratio control valve is comprised of a solenoid valve disposed in the return passage, which is provided with an energy recovery motor, and a solenoid valve disposed in the return passage, which branches off the upstream side of the solenoid valve. | 11-26-2009 |
| 20100050625 | Axle Driving Apparatus for a Zero Turn Radius Vehicle - An axle driving apparatus includes a first housing having a plurality of cooling fins, an axle rotatably mounted in the first housing, a hydraulic stepless speed change assembly disposed within the first housing. The axle driving apparatus also includes a second housing having a plurality of cooling fins, an axle rotatably mounted in the second housing, a hydraulic stepless speed change assembly disposed within the second housing. A connecting means, such as a bar and/or plate connects the first and second housings. The plurality of cooling fins on the first housing has a different configuration that the plurality of cooling fins on the second housing. | 03-04-2010 |
| 20100251706 | HYDRAULIC COUPLING HAVING SELF-ADJUSTING ANTI-ROTATION HYDRAULIC FLUID PATH - A hydraulic coupling for use in a vehicle drive train having a fluid path which extends between the housing of the hydraulic coupling and a coupling mechanism. The fluid path includes a first aperture formed in the housing with a first diameter and a longitudinal axis, as well as a second aperture formed in the coupling mechanism. A rigid conduit extends between the first and second apertures with a first portion having a diameter that is less than the first diameter of the first aperture so as to define an adjustment gap that allows the rigid conduit to move out of alignment with the longitudinal axis in response to misalignment between the first and second apertures. In addition, the rigid conduit provides resistance to torque imposed upon the coupling mechanism. | 10-07-2010 |
| 20110099992 | HYDRODYNAMIC TORQUE CONVERTER - The invention relates to a hydrodynamic torque converter having an impeller wheel, a turbine wheel and an oscillation damper which is accommodated in the converter housing, and a converter lockup clutch. Two damper stages are arranged here as a serial damper between the output hub of the torque converter and the converter lockup clutch, and a damper stage is arranged between the turbine wheel and the output hub. In order to improve the damping properties, a rotary oscillation absorber is additionally provided which is arranged between the dampers and is also connected to the turbine wheel in a rotationally fixed fashion. | 05-05-2011 |
| 20120110992 | ELECTRIC CAPSTAN - An electric capstan that is able to save power and make use more convenient. The electric capstan includes an air pump, a motor, a reduction gear and a winching roller, and further includes an engagement-disengagement gear, wherein the input shaft of the air pump is connected to or separated from the output shaft of the motor by the engagement-disengagement gear. | 05-10-2012 |
| 20120180473 | HYDRODYNAMIC TORQUE CONVERTER HAVING A VIBRATION ABSORBER AND TORSIONAL VIBRATION DAMPER - A hydrodynamic torque converter having a pump wheel accommodated in a housing, a turbine wheel, which can be driven by the pump wheel, and a torsional vibration damper, where the torsional vibration damper has a damper input drive component and a damper output drive component, which can rotate to a limited degree with respect to the damper input drive component to oppose the action of at least two damper stages which are operatively connected in series and which each have at least one energy storage element, where the torsional vibration damper also has an intermediate damper component, which is arranged operatively between the damper stages and which directly or indirectly accommodates a vibration absorber, where the energy storage elements of the damper stages are substantially arranged on a common radius, where the vibration absorber is arranged adjacent to the torsional vibration damper in the axial dimension. | 07-19-2012 |
| 20120312006 | CONTROL SYSTEM FOR HYBRID CONSTRUCTION MACHINE - A control system for hybrid construction machine includes an engine, a main pump to be driven by the engine, a rotary shaft linking an assist pump, a regenerative hydraulic motor and a motor generator, and a clutch for linking the engine and the rotary shaft. | 12-13-2012 |
| 20130174540 | WORK MACHINE - The present invention relates to a work machine having a drive unit which drives one or more hydraulic pumps of a hydraulic system of the work machine via an output shaft, wherein a clutch is provided which can be controlled or is designed so that it separates the output shaft from the hydraulic pump or pumps in towing load operation. | 07-11-2013 |
| 20130327031 | Combined Power Take-Off and Hydraulic Pump Assembly - A combined power take-off and hydraulic pump assembly includes a power take off including a housing portion having an opened end, an input put mechanism that is adapted to be connected to a source of rotational energy, and an output mechanism that is rotatably driven by the input mechanism. The assembly also includes a hydraulic pump including a housing portion having an opened end, a fluid inlet port that is adapted to communicate with a reservoir containing a quantity of relatively low pressure hydraulic fluid, and a pumping mechanism that is rotatably driven by the output mechanism of the power take-off. An intermediate housing has a first opened end that cooperates with the opened end of the housing portion of the power take-off and a second opened end that cooperates with the opened end of the housing portion of the hydraulic pump. The intermediate housing also has a fluid outlet port that communicates with the pumping mechanism and that is adapted to communicate with a hydraulically driven device. The intermediate housing may also support a bearing that, in turn, supports a portion of the output mechanism of the power take-off. | 12-12-2013 |
| 20140157766 | Hydraulic Controller for an Automatic Transmission of a Motor Vehicle - A hydraulic controller for an automatic transmission of a motor vehicle includes at least one gear shift piston-cylinder unit having a gear shift piston for actuating a shifting element in the form of a multi-plate clutch, and a gear shift pressure chamber in which an actuating pressure may be built up by supplying operating fluid. The gear shift piston-cylinder unit has a centrifugal oil chamber that is separated from the gear shift pressure chamber by a gear shift piston. Operating fluid may be supplied to the centrifugal oil chamber via a centrifugal oil line supplied by a first supply line. The hydraulic controller has a second supply line for supplying operating fluid to the centrifugal oil line. The second supply line may be closed and opened by a centrifugal oil valve. | 06-12-2014 |
| 20140331663 | Quick Coupler Hydraulic Control System - A hydraulic system for an implement coupler assembly of a machine includes a coupler cylinder, a control valve connecting the coupler cylinder to a pressurized fluid source and a low pressure reservoir, and a sequence valve and a check valve connected in parallel between the coupler cylinder and the control valve. An implement cylinder provides a pilot pressure for the sequence valve. The coupler cylinder extends to a locked position when the control valve provides pressurized fluid through the check valve to a head end of the coupler cylinder. The coupler cylinder retracts to an unlocked position when the control valve provides pressurized fluid to a rod end of the coupler cylinder if the implement cylinder provides pilot pressure sufficient to open the sequence valve and connect the head end of the coupler cylinder to the low pressure reservoir. | 11-13-2014 |
| 060436000 | Correlated control of device and motive fluid flow controller | 6 |
| 20110099993 | Transmission - A transmission comprises a casing, an output element, a hydrostatic stepless transmission unit (HST) and a forward/backward traveling direction selecting unit (reverser). The output element is supported by the casing. The HST is disposed in the casing so as to be driven by a drive source disposed outside of the casing. The HST includes a pump shaft and a motor shaft member. The pump shaft is drivingly connected to the drive source. The motor shaft member is fitted around the pump shaft coaxially to the pump shaft so as to be rotatable relative to the pump shaft, thereby constituting a hydraulic pump and a hydraulic motor centered on the pump shaft and the motor shaft member. An axially distal end of the motor shaft member is disposed on the axially proximal side of an axially distal end of the pump shaft so that axial ends of the pump shaft are the axially most distal ends of the HST in the axial direction of the pump shaft. The reverser is disposed in the casing so as to transmit power outputted from the HST to the output element. The reverser includes a forward-traveling drive train, a backward-traveling drive train, and a clutch for selecting either the forward-traveling drive train or the backward traveling drive train to transmit the power outputted from the motor shaft member to the output element. The reverser and the output element are entirely disposed between the axial ends of the pump shaft in the axial direction of the pump shaft. | 05-05-2011 |
| 20110314802 | SWING SYSTEM AND CONSTRUCTION MACHINERY OR VEHICLE COMPRISING A SWING SYSTEM - A swing system for construction machinery or a vehicle, particularly an excavator or a crane, includes a swing brake for blocking or unblocking a rotational movement of a first portion of the vehicle relative to a chassis portion of the vehicle, and a swing pump and a swing motor are provided for performing the rotational movement. The swing pump can be positioned in a neutral position where no rotational movement of the first portion takes place. At least one brake control actuator is provided for automatically engaging the brake when the swing pump is in its neutral position. The swing system can provide an improved control of the swing movement on a slope and an improved comfort during operation of the swing movement. | 12-29-2011 |
| 20120060485 | HYDRAULIC CONTROL DEVICE, CONTROL METHOD OF THEREOF, AND AUTOMATIC TRANSMISSION - A hydraulic control device includes an oil pump for generating a hydraulic pressure by being rotated by power of a driving force source, a driving force source stopping unit that stops rotation of the driving force source when a predetermined condition holds, and a cut-off unit that cuts off transmission of the power from the driving force source to the oil pump when the driving force source rotates in a reverse direction as the rotation of the driving force source is stopped by the driving force source stopping unit. | 03-15-2012 |
| 20130333369 | HYDROSTATIC PISTON ENGINE HAVING A BRAKE DEVICE - A hydrostatic piston engine includes an actuating element configured to actuate a brake device to produce a braking force on a rotor of the piston engine. The actuating element is configured to release the brake device when a hydraulic force acts on the actuating element. The hydraulic force prevails in a pressure chamber which is connected to a pressure medium source via a first throttle point. The pressure chamber is also configured to be connected to a pressure medium sink. The hydrostatic piston engine also includes a pressure retention valve device configured to open in a direction of the pressure medium sink. The pressure retention valve device is disposed between the pressure chamber and the pressure medium sink. The opening pressure of the pressure retention valve device is at least equal to the pressure in the pressure chamber which is necessary to release the brake device. | 12-19-2013 |
| 20140047828 | TORQUE CONVERTER HYDRAULIC CONTROL SYSTEM FOR AN AUTOMATIC TRANSMISSION - A torque converter hydraulic control subsystem for a transmission is provided. The torque converter hydraulic control subsystem includes a source of pressurized hydraulic fluid that communicates with a torque converter clutch (TCC) regulation valve, a TCC control valve, and a lubrication boost valve. The torque converter hydraulic control subsystem is configured to provide cooling and lubrication fluid flow to a torque converter in all modes of operation. | 02-20-2014 |
| 20150007556 | HYDRAULIC MOTOR - A hydraulic motor includes a motor mechanism that rotates by hydraulic liquid pressure led from a hydraulic liquid pressure source. The hydraulic motor includes a casing that defines a casing chamber which accommodates the motor mechanism, a brake mechanism that brakes the rotation of the motor mechanism, a brake release actuator that releases the braking of the brake mechanism by a brake release pressure led from the hydraulic liquid pressure source, and a throttle passage that is in communication with the casing chamber and extracts a portion of hydraulic liquid that is led into the brake release actuator and leads it to the casing chamber. | 01-08-2015 |
| 060437000 | Selective fluid and mechanical drive of output from input | 3 |
| 20080236155 | HYDROSTATIC CONTINUOUSLY VARIABLE TRANSMISSION - A hydrostatic continuously variable transmission includes a swash plate type plunger hydraulic pump and a swash plate type plunger hydraulic motor connected via a hydraulic closed circuit, an inclined angle of a swash plate of the hydraulic motor is variably controlled for continuous shift control. A lock-up mechanism closes the hydraulic closed circuit to make lockup executed when the quantity of oil that flows from the hydraulic pump into the hydraulic motor decreases according to variable control over the inclined angle of the swash plate. The input rotation of the hydraulic pump and the output rotation of the hydraulic motor are substantially synchronous. The lock-up mechanism is operated when lockup control oil pressure is applied and closes the hydraulic closed circuit. A lockup control oil passage that supplies the lockup control oil pressure is provided with an opening opened and closed according to the inclination of the swash plate | 10-02-2008 |
| 20150135700 | Enhancements to High Efficiency Hydro-mechanical Vehicle Transmission - This invention consists of the addition of a novel clutch arrangement which facilitates speed changing gears on both the output and input of the transmission and provides for a compact packaging configuration for a plurality of hydraulic pump/motors. The use of a small accumulator without a valve and a related reservoir absorbs the pressure shocks from rapidly opening and closing the valves that that select or de-select the pump/motors. It is also disclosed that two adjacent pump/motors on the same shaft can be constructed such that they share an input or output port thereby reducing the size of the combination. The transmission can perform the retarder function by placing a flow retarding valve in the re-circulating path in one or more of the pump/motors. | 05-21-2015 |
| 20160025216 | Hydrostatic Continuously Variable Transmission - A neutral biasing mechanism in a hydrostatic continuously variable transmission includes a plurality of springs attached so as to be spanned from a pivot arm to a base. The plurality of springs bias the pivot arm such that a roller is fitted into a cam portion. A variable spring configured such that a biasing force thereof can be changed and another spring that is different from the variable spring are provided as the plurality of springs. The variable spring and the other spring are arranged at separate positions in a state where attachment positions thereof in the pivot arm and the base are separate from each other. | 01-28-2016 |
| 060439000 | Device acts on intermediate reactive rotor to modify speed ratio or direction | 1 |
| 20120073281 | Drive apparatus for a vehicle - A drive apparatus for a vehicle includes an engine output system that outputs power from an engine and a power transmission system that transmits the power from the engine output system to a driving wheel. A power transmission path including a chain mechanism and a one-way clutch is provided between an oil pump and a turbine shaft that is part of the engine output system. Another power transmission path including a corresponding chain mechanism and a corresponding one-way clutch is provided between the oil pump and a primary shaft that is part of the power transmission system. | 03-29-2012 |
| 060441000 | Condition or direction responsive device | 2 |
| 20100126163 | HYDRAULIC CONTROL UNIT - A hydraulic control unit provided with oil pumps includes a first oil discharging outlet and a second oil discharging outlet, a high pressure route connected with the first oil discharging outlet, a medium pressure route with an oil pressure therein being lower than that in the high pressure route, a low pressure route with an oil pressure therein being lower than that in the medium pressure route, and a connection mode switching mechanism for selectively connecting a second oil discharging outlet with the high pressure route, the medium pressure route or the low pressure route. The connection mode switching mechanism includes a changeover valve selectively connecting the second oil discharging outlet with the medium pressure route or the low pressure route; and a changeover valve controlling device connecting the second oil discharging outlet with any of the medium pressure route and the low pressure route. The hydraulic control unit can minimize drive loss of an oil pump. | 05-27-2010 |
| 20120174570 | TRANSMISSION HYDRAULIC CONTROL SYSTEM HAVING FLOW AUGMENTATION - A system for providing pressurized hydraulic fluid includes an engine driven main pump and an electrical motor driven auxiliary pump. The auxiliary pump provides hydraulic fluid at line pressure to shift control subsystems during a vehicle launch while the main pump provides hydraulic fluid to cooler or lubrication subsystems during the vehicle launch. A pressure regulation valve regulates the pressure of the hydraulic fluid from the main pump. Once the main pump reaches a critical speed, the main pump provides hydraulic fluid at line pressure to the hydraulic control system and the auxiliary pump is turned off. | 07-12-2012 |
| 060442000 | Device holds output in adjusted position | 1 |
| 20130160442 | ELECTRO-HYDRAULIC ACTUATOR WITH AN INTEGRATED BRAKE - An electro-hydraulic actuator has a master cylinder, an electric motor and an electro-mechanical brake. The master cylinder has a hydraulic cylinder and an actuation piston slidably received within the hydraulic cylinder to vary pressure within a hydraulic circuit. The electric motor is adapted to drive the actuation piston into the hydraulic cylinder. The motor has a stator and a rotor. The electro-mechanical brake is arranged to selectively and releasably hold the rotor with respect to the stator to prevent relative rotational motion there between. | 06-27-2013 |
