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Document Title |
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7546729 |
Method and system for limiting torque load associated with an implement
A method for reducing a torque load associated with an implement includes determining a speed associated with a power source, wherein the power source is configured to provide power to a hydraulic...
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7478530 |
Hydraulic circuit for working machine
A hydraulic circuit for a working machine includes hydraulic actuators which respectively drive a plurality of kinds of working devices and which are driven by a drive circuit having circuit states...
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7469537 |
Hydraulic transaxle and hydraulically driven vehicle
A hydraulic transaxle comprises: an axle; a hydraulic pump driven by a prime mover; a hydraulic motor fluidly connected to the hydraulic pump so as to drive the axle; a bypass fluid circuit...
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7458311 |
Return to neutral for dual hydrostatic transmission
A return to neutral mechanism for a dual hydrostatic transmission includes a plurality of return to neutral control arms, each return to neutral control arm biased toward a neutral position. Each...
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7310943 |
Hydrostatic transmission controls with alternative operating modes
A hydrostatic transmission on a tractor is operated by a microcontroller providing current commands to the hydrostatic transmission pump, and manual controls that provide signals to the...
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7240487 |
Throttle potentiometer adapter
A throttle potentiometer adapter provides a direct connection between a pivot nut on a hand throttle linkage and the internal sleeve of a potentiometer. The potentiometer provides a voltage output...
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7234300 |
Fastener and valve for a hydraulic apparatus
An improved diagnostic system for a hydrostatic apparatus such as a hydrostatic transmission or transaxle is disclosed. A fastener having a port formed therein is used to connect a hydraulic...
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7204083 |
Hydraulic actuating device for a convertible top assembly of a vehicle
A hydraulic actuating device for a convertible top assembly of a motor vehicle. The actuating device comprises a hydraulic pump with an associated electric pump motor and one or more hydraulic...
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7133758 |
Neutral start interlock
A neutral start interlock for a hydrostatic drive system that uses potentiometers to electronically monitor at least the position of the hydrostatic displacement control such that the engine will...
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7111457 |
Diagnostic system for a hydrostatic transmission or transaxle
An improved diagnostic system for a hydrostatic apparatus such as a hydrostatic transmission or transaxle is disclosed. A fastener having a port formed therein is used to connect a hydraulic...
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6973779 |
Hydraulic power system for agricultural implement including flow-rate indicator
An agricultural-implement hydraulic circuit includes a pump supplying pressurized fluid to a first service line and a second service line via a feed line and a device for varying the flow rate of...
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6625980 |
Overpressure control circuit for vehicle pneumatic system
The invention creates a vehicle pneumatics overpressure regulating circuit 1 of a supply device of a pneumatic consumer 5 in a vehicle with an operating pressure. The overpressure circuit 1 ...
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6615581 |
Hydraulic oil flow controller for construction machine
A hydraulic oil flow controller for a construction machine comprises an operating valve 6 for supplying hydraulic oil discharged from hydraulic pimps 1 and 2 to an attachment, an attachment...
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6539710 |
Hydrostatic steering system having improved steering sensing
A hydrostatic steering system of the type including a fluid controller ( 21 ) for controlling the flow of fluid from a source ( 11 ) to a steering actuator ( 19 ) in response to movement of a...
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6499295 |
Hydro-transformer
The present invention relates to a hydro-transformer including a hydraulic machine, a switching valve and a control means. A work port of the switching valve, which may optionally be connected...
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6092370 |
Apparatus and method for diagnosing the status of specific components in high-pressure fluid pumps
A method and apparatus for diagnosing components in high-pressure pumps to indicate when a component of the pump head is malfunctioning and to identify the malfunctioning component. In one...
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5865086 |
Thermo-hydro-dynamic system
Description of a system of a thermodynamic steam pump for water propulsion, its heating, disinfection and sterilization, or propulsion of other liquids, characterized by use of water steam pressure...
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5796343 |
Device and method for preventing damage to goods during handling by material handling equipment
An alarm device, an improved squeeze-pad hydraulic system for a squeeze truck, and a method for converting an existing squeeze-pad hydraulic system of a squeeze truck into a squeeze-pad hydraulic...
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5787787 |
Engine/pump control device for loaders
An engine/pump control device for loaders is disclosed. The control device controllably distributes the output power (rotating force) of an engine to the travelling and working units of a loader in...
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5692376 |
Control circuit for a construction machine
Each attachment for a hydraulically actuated device includes a digitally coded connector which informs a control device about its identity. The control device includes a library which relates the...
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5660041 |
Process for adjusting the characteristics of infinitely variable transmissions of a vehicle
A process for adjusting the characteristics of infinitely variable transmissions of a vehicle with two drive mechanisms including detecting the output speeds of the transmissions and comparing them...
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5634334 |
Hydraulic device for use in a production machine
In a hydraulic device at least one control valve with at least three control positions is connected with a variable capacity pump, whereby the controlling device of the variable capacity pump is...
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5493861 |
Hydraulic system with pump and load
In a hydraulic system with a pump (1) and a load (4, 104), a pressure relief valve (16) is connected to the pump pressure side (3) and open when a difference between pump pressure and maximum load...
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5287699 |
Automatic vibration method and device for hydraulic drilling machine
In a hydraulic drilling machine with a boom, arm and bucket as working parts, one or more of the working parts can be vibrated automatically to perform effective drilling with reduced resistance in...
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5123244 |
Differential pressure measuring device with position detector means
A hydrostatic transmission with a pair of pump/motor connected in a closed loop state by a pair of hydrostatic circuit. The hydrostatic transmission comprises a differential pressure detecting...
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5085468 |
Vehicle storage tank headboard
A vehicle headboard defining a hydraulic oil storage tank for use on a vehicle is disclosed. The vehicle headboard can include a top header, a bottom header, a plurality of spaced apart transfer...
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5036659 |
Swash plate type pump with flow path through cavity containing swash plate
Overheating of hydraulic fluid in a hydraulic motor system subject to aiding loads can be avoided without paying a weight or volume penalty by providing a return port (64) adapted to be connected...
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4757684 |
Fail-safe electric actuator
A fail-safe electric actuator, for use with a control mechanism such as a valve, is disclosed. The actuator device eliminates the possibility of the control mechanism being locked in operative...
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4745743 |
Hydraulic fluid supply assembly
A hydraulic fluid supply assembly for an agricultural or industrial tractor or similar vehicle. The assembly includes a mounting plate which closes an aperture in a back axle casing of the vehicle...
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4698968 |
Pumping unit
A pumping unit particularly for pumping oil from an oil bore has an inner stationary cylinder unit and an outer cylinder unit reciprocatable relative to the inner unit by hydraulic fluid; the units...
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4683718 |
Method and apparatus for monitoring hydro turbine plants
A method and a device for monitoring hydro turbine plants. The device comprises one or several hydro turbines, at least one of them having adjustable vanes. For optimum utilization of the available...
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4655039 |
Lift system
A hydraulic lifting and lowering system for battery-powered lift trucks includes an electronic control system which reduces or limits operator selected lifting commands in accordance with the...
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4531365 |
Neutral start for hydrostatic transmission
A hydrostatic transmission including a pump and motor unit wherein the pump unit is displaceable effectuated by an operative member integral to the pump unit. A neutral start switch communicating...
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4489551 |
Failure detection system for hydraulic pump
A failure detection system for a hydraulic pump (1) having a displacement volume varying device (1a) and connected to at least one hydraulic actuator (4) to constitute a hydraulic circuit for...
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4476677 |
Hydraulic supply circuit for vehicle steering system
An hydraulic supply circuit for a vehicle power steering system of the type having a steering actuator and control valve therefor with hydraulic input, sump and overflow (by-pass) connections and...
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4326558 |
Steering system including accumulator for supplying emergency reserve of fluid
A hydraulic fluid power system includes an accumulator which stores a reserve of pressure fluid at pump standby pressure. The charging and discharging of the accumulator is controlled by an...
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4303089 |
Steering including accumulator for supplying emergency reserve of fluid
A hydraulic fluid power steering system includes an accumulator which stores a reserve of pressure fluid at pump standby pressure. The charging and discharging of the accumulator is controlled by...
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4285126 |
Hydraulically actuated apparatus
A multipurpose, hydraulically actuated apparatus comprising a piston movable in response to fluid under pressure within walls defining a piston chamber. Actuating fluid is supplied to the piston...
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4209984 |
Hydraulic system with unloading valve assembly
A hydraulic system having a reservoir fed charge pump supplying pressurized fluid through a charge passage and a filter to the inlet of a supply pump for direction controlled fluid devices includes...
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4151718 |
Electronic control for hydraulic press
An electronic control device for hydraulic presses for making plywood and the like having electronic computer structure for developing a control for the desired hydraulic pressure having multiple...
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4143583 |
Redundant EHV fault detector
Plural servo actuators are coupled to provide a redundant system for operating a common output device. Each servo actuator has plural servo valves each having one active output that causes...
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4132071 |
Electro-hydraulic controlled valve actuator system
A hydraulic valve actuator includes at least one piston mounted for reciprocating movement in a cylinder for bidirectionally rotating a valve shaft mounted in the housing. A resilient spring member...
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4003294 |
Hydraulic power mechanism with control device actuator
A vehicle hydraulic power brake and steering system has a hydraulic brake booster provided with a mechanism for operating a switch to indicate loss of hydraulic power, and for operating a control...
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3896704 |
Operational table for medical purposes
An operational table for medical purposes has a number of elements movable independently from each other by a hydraulic system. The invention is particularly characterized by the provision of a...
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3882973 |
Automatic retarder control system
A control system for a retarder in a vehicular drive train including a transmission gear ratio assembly having a power input shaft coupled with an engine and a power output shaft for driving the...
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3768261 |
CONTROL SYSTEM FOR HOIST TESTING APPARATUS
A control system for apparatus for testing the rated load, speed and braking capabilities of a hoist. The hoist line is connected to a test which cable by a lever and pulley arrangement. A load...
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3757641 |
CONTROL SYSTEM FOR SYNCHRONIZING MOVEMENT OF DRIVEN MACHINE MEMBERS
A control system for synchronizing movement of two hydraulically actuated, individually driven and leveled machine members. Preferably, the control unit is used with a pair of hydraulically...
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3730125 |
HYDRAULIC BACKSTAY TENSIONER
A self-contained tension adjusting device for adjusting the tension in the backstay of a sailboat includes a single housing for a pump, a hydraulic cylinder with a movable piston coupled to the...
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3703077 |
VACUUM PUMPING DEVICE
A power braking system having a vacuum operated pumping device for supplying fluid under pressure to operate a spring braking device. The pumping device has a housing with an internal cavity...
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3696895 |
FLUIDIC CONTROL FOR MOTOR AND BRAKE
This system controls the operation of a jet engine thrust reversing mechanism of the type operated by a reversible fluid motor. The control system is of the fluidic character having a first circuit...
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