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| Number | Title | Issue Date |
| 8042332 | Transaxle An axle driving device includes a hydrostatic transmission (HST) having a hydraulic pump and a hydraulic motor which are in fluid communication with one another through a closed circuit within a center section of the HST, an axle capable of being driven by driving p... | 10/25/2011 |
| 7856818 | Compressor A compressor having a discharge chamber into which compressed refrigerant gas is discharged, a discharge passage connected to the discharge chamber, an oil separation device that centrifugally separate oil from the refrigerant gas, an oil reservoir chamber that comm... | 12/28/2010 |
| 7441406 | Fluid circuit and industrial truck having a fluid circuit The invention relates to a fluid circuit for load displacement, having a fluid supply line for conveying fluid from a fluid tank by means of a fluid pump to at least one fluid store of a consumer, and having a fluid return line, through which fluid can be returned, ... | 10/28/2008 |
| 7354511 | Hydraulic unit for industrial trucks A hydraulic unit for industrial trucks, comprising a motor pump unit which is directly attached to a tank, a reflux filter which has an elongate filter casing for a filtering element adapted to be introduced into the tank through an opening, a hose coupling, and an ... | 04/08/2008 |
| 7343740 | Orifice element with integrated filter, slow return valve, and hydraulic drive unit A filter-integrated orifice element is provided which can reduce manufacturing costs and assembling costs in a hydraulic circuit for which size reduction is desirable. A filter-integrated orifice element is obtained by integrating a filter for removing an obstacle w... | 03/18/2008 |
| 7331176 | Transaxle With regard to a transaxle comprising a housing, which houses a hydrostatic stepless transmission constructed by fluidly connecting a hydraulic pump with a hydraulic motor and an axle drivingly connected to the transmission, the housing is constructed by detachably ... | 02/19/2008 |
| 7302966 | Flow control valve and method A flow control valve includes a body having a fluid passageway therethrough and first and second openings each adapted for receiving or discharging fluid from the passageway. A piston is slidably disposed in the passageway between the first and second openings of th... | 12/04/2007 |
| 7290389 | Hydraulic drive system and improved filter sub-system therefor A hydraulic drive system (11) of the type including a hydrostatic pump-motor unit (35) having a pumping mode in which the unit pressurizes, from its port (A), a high pressure accumulator (41), and a motoring mode, in which the unit is driven by ... | 11/06/2007 |
| 7281506 | Oil pressure control apparatus for an internal combustion engine An oil pressure control apparatus which includes a source of hydraulic pressure introducing the hydraulic pressure to a hydraulic actuator which is actuated by hydraulic pressure, a fluid passage which is connected between the source of hydraulic pressure and the hy... | 10/16/2007 |
| 7261123 | Reservoir tank of a power steering system for a car A reservoir tank of power steering system for a car includes an inlet port delivering oil through a swirl prevention member. The oil is then allowed to flow so swirl does not form in the oil flow of a reservoir tank. Furthermore, bubble formation in the oil is minim... | 08/28/2007 |
| 7234299 | Hydraulic transaxle An integrated hydraulic transaxle (IHT) comprises a hydrostatic transmission (HST), an axle driven by the HST, and a housing incorporating the HST and the axle. The HST includes a variable displacement hydraulic pump driven by a prime mover, and a hydraulic motor fl... | 06/26/2007 |
| 7232518 | Filter device A filter device includes at least one filter unit (10), connectable to a hydraulic circuit (14), with at least one supply line (16), one discharge line (18), and at least one cooling unit (22). The cooling unit is connected to a se... | 06/19/2007 |
| 7210294 | Hydrostatic transaxle An expansion sump is provided in the axle horn of a hydraulic apparatus, and a cap member seals the expansion sump from the main sump. An arcuate sealed fluid passage is provided between the periphery of the cap member and the housing. The sealed fluid passage coope... | 05/01/2007 |
| 7166210 | Oil filter cartridge The present invention relates to small vehicles such as lawn and garden tractors and more specifically to an oil filter cartridge or assembly usable with the transmissions of such vehicles. The cartridge is comprised of a filtering element, a strainer element and a ... | 01/23/2007 |
| 7089644 | Method for manufacturing transaxles A method of manufacturing a plurality of left hand control hydrostatic transaxles and a plurality of right hand controlled hydrostatic transaxles. The method includes the steps of: providing a plurality of substantially identical axle modules; providing a plurality ... | 08/15/2006 |
| 7069675 | Power tilt apparatus In a power tilt apparatus in which an operation state of a cylinder apparatus is switched between an extension side and a compression side in accordance with an oil feeding direction of a pump apparatus by a switching valve apparatus provided in a pipe passage conne... | 07/04/2006 |
| 7056432 | Tank mounted oil filter assembly The present invention relates to small vehicles such as lawn and garden tractors and more specifically to an oil filter assembly used with the transmissions of such vehicles. The filter assembly is housed within the transmission case to reduce mounting brackets outs... | 06/06/2006 |
| 7028471 | Hydrostatic transmission A hydrostatic transmission comprises a housing whose interior space serves as a fluid sump, a pair of first and second fluid passages disposed in the housing, the pair of first and second fluid passages interposed between the hydraulic pump and the hydraulic motor s... | 04/18/2006 |
| 7017341 | Fluid coupling for mobile equipment In an assembly including a diesel engine, a fluid coupling connected to the flywheel of the diesel engine, a comminuting machine and a conveyor for feeding the comminuting machine, a fluid coupling module is common to various output power train assemblies. Slip spee... | 03/28/2006 |
| 6978608 | Hydraulic unit What is disclosed is a hydraulic unit for a plastics processing machine, in particular a hydraulically actuated injection molding machine. In accordance with the invention, the drive mechanism of a pump of a hydraulic circuit is provided inside the tank to ensure op... | 12/27/2005 |
| 6964162 | Hydraulic pressure generating apparatus A hydraulic pressure generating apparatus includes a hydraulic oil feed line for feeding hydraulic oil with high pressure from an oil tank to a hydraulic pressure control system of a generator by an oil feeding pump unit, a hydraulic oil return line for returning dr... | 11/15/2005 |
| 6935982 | Differential gear A recess is formed on the side surface of output-side cams on the right side with through holes being formed on the sidewall of the case body of the differential case at positions corresponding to the recesses. An annular member is placed on the case body so as to b... | 08/30/2005 |
| 6913040 | Hydraulic fluid reservoir A hydraulic fluid reservoir apparatus for an automotive power steering system comprises a filter chamber, and a filter parallel to a vertical axis and dividing the filter chamber into an upstream region and a downstream region. The reservoir apparatus also includes ... | 07/05/2005 |
| 6880334 | Filter for hydrostatic transmission In a hydrostatic transmission or integrated hydrostatic transaxle having a housing forming an oil sump and a hydraulic pump and hydraulic motor mounted in the sump and connected through hydraulic porting, a filter housing or other structure defining an internal volu... | 04/19/2005 |
| 6849179 | Internal filter An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump. ... | 02/01/2005 |
| 6840042 | Internal filter An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump. ... | 01/11/2005 |
| 6758112 | Power transmission arrangement of a working vehicle and transmission for the working vehicle In a power transmission arrangement, a working unit includes a hydraulic power unit and a valve unit enclosed in a first bulging portion of a transmission case closer to an upper side or on a top surface thereof and connected with each other along a vehicle lengthwi... | 07/06/2004 |
| 6681569 | Filter assembly for a hydrostatic transaxle A filter assembly for a hydrostatic transaxle comprising a hydraulic pump and a hydraulic motor in fluid communication via porting formed in a center section. The filter assembly includes an upper filter member having a generally horizontally oriented fil... | 01/27/2004 |
| 6652245 | Piston pump for hydraulic vehicle brake system The invention relates to a piston pump for a hydraulic, slip-controlled vehicle brake system. The piston pump has a piston, which is inserted with a part of its length into a sleeve. A tubular filter that encompasses the piston is attached to the sleeve a... | 11/25/2003 |
| 6647720 | Hydrostatic unit for a hydro-mechanical torque division transmission A hydrostatic unit for a hydro-mechanical torque division transmission for a work vehicle having a mounting frame (10, 12) in which the shafts (18, 20) of hydrostatic devices (22, 24) are arranged parallel to one another are supported by bearing units (14... | 11/18/2003 |
| 6508059 | Hydrostatic transmission A hydrostatic transmission comprises a housing whose interior space serves as a fluid sump, a pair of first and second fluid passages disposed in the housing, the pair of first and second fluid passages interposed between the hydraulic pump and the hydrau... | 01/21/2003 |
| 6467263 | Filter assembly for a hydrostatic transmission A hydrostatic transmission assembly includes a hydraulic pump and motor mechanism having a pump, a motor and at least one fluid passageway therebetween, a source of transmission fluid, at least one projection attached to the hydrostatic pump and motor mec... | 10/22/2002 |
| 6449948 | Hydraulic circuit cleaning apparatus and method A hydraulic circuit cleaning apparatus has a hydraulic circuit that includes an oil pump, an oil passage to which the oil pressure ejected from the oil pump is supplied, and a pressure regulator device connected to the oil passage for regulating the oil p... | 09/17/2002 |
| 6382148 | Oil pressure control apparatus for an internal combustion engine An oil pressure control apparatus which includes a source of hydraulic pressure introducing the hydraulic pressure to a hydraulic actuator which is actuated by hydraulic pressure, a fluid passage which is connected between the source of hydraulic pressure... | 05/07/2002 |
| 6382245 | Resinous reservoir tank A generally ring-shaped intermediate member having a bracket-mounting portion is interposed between an upper tank having an inflow pipe and a lower tank having an outflow pipe. A resinous reservoir tank according to the invention is formed by connecting a... | 05/07/2002 |
| 6374603 | Hydraulic circuits for internal combustion engines A hydraulic circuit includes first and second pumps, a first discharge passage receiving hydraulic fluid discharged from the first pump and communicating with a main gallery, a second discharge passage receiving hydraulic fluid discharged from the second ... | 04/23/2002 |
| 6311724 | Reservoir for power steering system A reservoir is provided having an upper reservoir body connected to a lower reservoir body. The reservoir includes and inlet port and an outlet port that are separated by a filter, which filters fluid flowing from the inlet to the outlet. In addition, a r... | 11/06/2001 |
| 6279317 | Hydrostatic drive with regeneration circuit The hydrostatic drive with regeneration circuit comprises a geroter flow divider which operates in conjunction with a two position three way valve and a check valve to provide regeneration flow for the hydrostatic drive when the valve is energized.... | 08/28/2001 |
| 6276137 | Brake master cylinder with dual check valve compensation through secondary piston A master cylinder provides separate flow paths through its secondary piston to provide greater fluid flow capacity from the reservoir to both the primary and secondary pressure chambers in response to the removal of brake fluid from the brake lines fed by... | 08/21/2001 |
| 6186028 | Housing for an axle driving apparatus A housing for an axle driving apparatus which is partitioned therein through an inner wall into a first chamber for housing therein a hydrostatic transmission and a second chamber for housing therein a drive train for transmitting power outputted from the... | 02/13/2001 |
