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An extension member is attachable to a trailer hitch and extends away from the vehicle and is connected to a seating frame supporting a toilet seat.
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| Number | Title | Issue Date |
| 8151565 | Buoyancy prime mover The invention is directed to the use of buoyancy force as a prime mover that converts the potential energy of a compressed gas transmitted to a buoy device within a liquid into rotating mechanical energy which is mechanically connected to a electric generator, where... | 04/10/2012 |
| 7412827 | Multi-pump control system and method A hydraulic control system for a work machine is disclosed. The hydraulic control system has a first pump, a second pump, an operator control device, and a controller. The first and second pumps are configured to pressurize a fluid. The operator control device is mo... | 08/19/2008 |
| 7191594 | Hydrostatic stepless transmission A hydrostatic stepless transmission comprises a hydraulic pump and a hydraulic motor, at least one of the hydraulic pump and motor being variable in displacement; a closed circuit for fluidly connecting the hydraulic pump and motor to each other therethrough, the cl... | 03/20/2007 |
| 7165486 | Apparatus and method for hydraulically controlling a vehicle restraint A valve circuit, including a first and second circuit portion, for hydraulically controlling a loading dock vehicle restraint. The first circuit portion permits raising and lowering of the vehicle restraint. The second circuit portion permits extension and retractio... | 01/23/2007 |
| 6988362 | Hydrostatic stepless transmission A hydrostatic stepless transmission comprises a hydraulic pump and a hydraulic motor, at least one of the hydraulic pump and motor being variable in displacement; a closed circuit for fluidly connecting the hydraulic pump and motor to each other therethrough, the cl... | 01/24/2006 |
| 6915631 | Forward/backward switching control apparatus for hydraulic drive vehicle, and control method therefor A forward/backward switching control apparatus for a hydraulic drive vehicle that includes the following structures. A variable displacement type hydraulic pump driven by an engine for discharging pressure oil in both directions. An electromagnetic pump inclination ... | 07/12/2005 |
| 6349543 | Regenerative adaptive fluid motor control A regenerative adaptive fluid motor control system integrating a load adaptive fluid motor control system and a load adaptive energy regenerating system having an energy accumulator. The fluid motor control system includes a primary variable displacement ... | 02/26/2002 |
| 5819536 | Hydraulic circuit A hydraulic circuit for controlling a plurality of hydraulic motors of a machine has a reversible pump with its suction/pressure ports connected to the inputs of an OR-valve is connected to the input of at least one 3/2 electro-valve, which has its output... | 10/13/1998 |
| 5778671 | Electrohydraulic system and apparatus with bidirectional electric-motor/hydraulic-pump unit An electrohydraulic control system that includes a bidirectional electric motor responsive to application of electrical power for rotation in either of two directions, and a hydraulic pump coupled to the motor and having ports for supplying hydraulic flui... | 07/14/1998 |
| 5307630 | System pressure compensated variable displacement hydraulic motor Paper drive unit instability that includes a variable displacement hydraulic motor (34), a rotary output (48), and a displacement controlling wobbler (36, 40) in the case of an aiding load can be avoided through the use of a double acting hydraulic actuat... | 05/03/1994 |
| 5235810 | Conduit valve providing wide neutral in a hydrostatic transmission A valve mechanism for a hydrostatic transmission having a variable displacement pump and a motor in fluid communication with each other via a closed-loop fluid system. The valve mechanism provides pressure relief and a wide neutral feature within a predet... | 08/17/1993 |
| 5207059 | Hydraulic control system having poppet and spool type valves Hydraulic control systems are useful for controlling actuation of hydraulic motors. Some such systems use spool type valves while other systems use poppet type valves, both of which have their advantages and disadvantages. The present hydraulic control sy... | 05/04/1993 |
| 5159812 | Circuitry for controlling control coils of servo devices in a hydraulic system The invention refers to a hydraulic system comprising at least a variable displacement pump and at least a consumer. Means are provided to generate electrical limit signals when at least one of the consumers, preferrably a load leading consumer indicates ... | 11/03/1992 |
| 5152143 | Hydraulic drive system A hydraulic drive system comprising a prime mover (21), a hydraulic pump (22) driven by the prime mover, a plurality of hydraulic actuators (23-28) driven by hydraulic fluid supplied from the hydraulic pump, a plurality of flow control valves (29-34) for ... | 10/06/1992 |
| 5150574 | Hydraulic drive system for civil engineering and construction machine A hydraulic drive system for a construction machine has a flow control valve (5) disposed between a hydraulic pump and an acutator, a pressure compensating valve for controlling a differential pressure across the flow control valve, and a pump delivery ra... | 09/29/1992 |
| 5146746 | Loading/unloading control apparatus for industrial vehicles A loading/unloading control apparatus for a industrial vehicle control the discharge capacity of a variable displacement type hydraulic pump in accordance with the detected result of the amount of load applied to a loading/unloading hydraulic actuator or ... | 09/15/1992 |
| 5058383 | Hydraulic motor control circuit A hydraulic motor control circuit for use in a device for driving construction equipment, such as shovel loader, which comprises a hydraulic driving motor, a pump for feeding compressed oil to the hydraulic motor and a tank for receiving the compressed oi... | 10/22/1991 |
| 5046312 | Swivel speed control circuit for working vehicle A hydraulic circuit for controlling the deck swiveling speed of a working vehicle comprises a hydraulic actuator for driving the swivel deck, a flow control valve for controlling a rate of oil flow to the hydraulic actuator, and a direction control valve ... | 09/10/1991 |
| 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 to the system return (22) in fluid communication with a cav... | 08/06/1991 |
| 4884402 | Control and regulating device for a hydrostatic drive assembly and method of operating same A hydrostatic drive assembly with an adjustable pump driven by a primary power source, which acts on several consumers of hydrostatic energy, is disclosed which has a control and regulating device with nominal speed value pickups and adjustable restrictor... | 12/05/1989 |
| 4741159 | Power transmission An electrohydraulic servo system which includes a plurality of pressure compensated flow control servo valves for feeding hydraulic fluid from a variable displacement pump to associated actuators and loads. A closed-loop velocity-control servo system is c... | 05/03/1988 |
| 4715180 | Hydraulic lift mechanism The invention contemplates hydraulic-lift mechanism which employs a power integrator in the connection between a charged hydraulic accumulator and the actuator for a vertically positionable load; the power integrator, additionally, has a prime-mover conne... | 12/29/1987 |
| 4712377 | Control apparatus for hydraulic motor A control apparatus for a hydraulic motor for use in a construction vehicle driven by hydraulic power has a hydraulic motor, a hydraulic pump serving as a pressurized fluid supply source, a manually operable directional control valve connected across supp... | 12/15/1987 |
| 4696162 | Multi-function valve A multi-function valve usable in a hydrostatic transmission and having valve components mounted in a single valve body to provide pressure limiter and high pressure relief functions and with the structure also providing a bypass function and for supply of... | 09/29/1987 |
| 4586330 | Control system for hydraulic circuit apparatus A control system for a hydraulic circuit including at least first and second variable displacement volume type hydraulic pumps, at least first and second hydraulic actuators driven by the pumps, and valves for controlling hydraulic connections between the... | 05/06/1986 |
| 4571940 | Control device for a hydrostatic gear driven by a drive engine A control device for a hydrostatic gear driven by a drive engine, such as an internal combustion engine, with an auxiliary pump which is driven synchronously with the drive engine, to produce a control pressure which is adjustable via a control valve and ... | 02/25/1986 |
| 4462210 | Input torque control for a variable displacement hydraulic transmission A torque control for a drive system having a hydraulic transmission connectable to a prime mover (30) and having a pair of hydraulically-connected displacement devices V and F, with one device having variable displacement, a torque sensor (35) generates a... | 07/31/1984 |
| 4449366 | Hydraulic control system for off-highway self-propelled work machines A hydraulic excavator is disclosed which includes two sets of manual control valves for selectively placing a pair of variable displacement pumps in and out of communication with hydraulically driven components such as propelling motors, arm cylinders and... | 05/22/1984 |
| 4400939 | Drive units A drive unit is provided consisting of an internal combustion engine, a continuously variable transmission unit and a fluid operated regulating assembly interconnecting said internal combustion engine and transmission and operated by a single manual contr... | 08/30/1983 |
| 4395878 | Control system for hydraulically driven vehicle A control system for a hydraulically driven vehicle having a pair of closed loop each including a variable displacement hydraulic pump driven by an engine and a variable displacement hydraulic motor, the control system comprising a charge pump driven by t... | 08/02/1983 |
| 4392543 | Hydrostatic transmission control A speed control assembly is provided particularly for use in controlling the position of a hydrostatic transmission. An operator controlled lever is mounted for rotation about a shaft, and a portion of the lever is mounted for linear reciprocation with re... | 07/12/1983 |
| 4383647 | Integrated hydraulic control circuit for jet engine thrust reverser and variable exhaust nozzle The invention is an integrated hydraulic control circuit for actuating the thrust reversers and variable exhaust nozzle on high performance gas turbine engine powered aircraft. The hydraulic circuits for both systems are integrated into a single housing a... | 05/17/1983 |
| 4382360 | Unloading arrangement for hydraulic swing circuit or the like A closed loop hydraulic swing circuit is provided with crossover auxiliary actuating connections between the pump control lines and the system relief valves to cause the relief valves to open at lower than maximum system pressure in an unloading action th... | 05/10/1983 |
| 4215547 | Hydrostatic system with over control compensation This specification discloses an off-road type vehicle employing an improved hydrostatic drive system having a variable displacement pump having an actuating member for varying displacement in at least one direction, wheel motors representing actuatable de... | 08/05/1980 |
| 4212164 | Variable delivery pump control system A variable delivery pump has a pump control mechanism in a housing secured thereto for governing directional flow of fluid through the pump, the pump being adapted to be connected through a closed loop to a motor. A pressure compensating valve is provided... | 07/15/1980 |
| 4167855 | Hydrostatic transmission control system for improved hillside operation A hydrostatic transmission control system is provided of the type utilizing a main control valve to vary the control pressure being ported to the strokers which control the swashplate position of a variable displacement pump. The control valve includes a ... | 09/18/1979 |
| 4118931 | Control arrangement for a hydrostatic drive A control arrangement for a hydrostatic drive comprises a gear pump driven by an internal combustion engine and supplying fluid to a fluid motor. The control arrangement is constructed in such a manner that even at a high number of revolutions per time un... | 10/10/1978 |
| 4094144 | Hydraulic pressure regulating arrangement A constant pressure at the output of a pressure regulator is adjusted to and maintained at a required value by hydraulic remote control of a sliding valve in operative association with a control cylinder responsive to actual pressure conditions. The posit... | 06/13/1978 |
| 4091617 | Hydraulic controller An electro-hydraulic control for a hydrostatic transmission including a variable displacement hydraulic pump and fluid operable servos to vary the displacement of the pump. The electro-hydraulic control is in series between the charge pump and the standar... | 05/30/1978 |
| 4075841 | Control system for hydrostatic transmission A system for controlling the operation of a reversible hydrostatic transmission including an engine-driven pump, particularly for a self-propelled utility vehicle such as a forklift truck, comprises a switchover member coupled with a setting lever of the ... | 02/28/1978 |
