| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Lubrication pump for inter-axle differential | US10935308 | 2004-09-08 | US20050032602A1 | 2005-02-10 | Lawrence Wagle; Dale Kwasniewski; James Ziech |
| An inter-axle differential assembly comprises an input shaft, an output shaft arranged coaxially with respect to each other, differential gearing and a dedicated reversible lubrication pump disposed between the input and output shafts. The reversible gerotor type lubrication pump includes a rotor driven by the input shaft, and an impeller, both disposed within a pump body coupled to a side gear drivingly connected to the output shaft. Thus, the lubrication pump generates lubricant flow only during the differential action between the input shaft and the output shaft, i.e. only when needed and at a flow rate proportional to the speed difference across the differential assembly. An oil flow generated by the lubrication pump is supplied to various components of the inter-axle differential assembly through a gallery of fluid passages. | ||||||
| 162 | Axial compensation in an inner geared pump for a closed circuit | US10019796 | 2002-04-30 | US06659748B1 | 2003-12-09 | Franz Arbogast; Günther Nagel |
| An internal geared machine capable of forward and reverse operation in a closed circuit having a pinion and an internal toothed ring gear meshing with the pinion and disposed in a housing. A filling comprising two identical filler pieces fills a sickle-shaped space between the pinion and ring gear and a single stop pin mounted in the housing supports both of the filler pieces by their front ends. A pair of axial discs are seated on the pinion shaft on respective sides of the pinion and axial pressure fields and control fields provide opposing pressures against the axial discs. | ||||||
| 163 | Control for progressive cavity pump | US09813583 | 2001-03-21 | US06530750B2 | 2003-03-11 | Ernest Bennett Mills |
| A progressive cavity pumping system includes a pump housing, a rotor member operatively received in the pump housing, a prime mover coupled to the rotor member for driving the rotor member in first and second directions and a controlling means for actuating the prime mover, wherein the controlling automatically causes the rotor member to be driven in the second direction after shut down or idling of the pumping system. A method of operating the pumping system includes automatically driving the rotor member in a second direction after initiating shut down or idling of the pumping system and prior to start up of the same. | ||||||
| 164 | Internal gear machine for reversed operation in a closed hydraulic circuit | US09786591 | 2001-03-23 | US06419471B1 | 2002-07-16 | Franz Arbogast; Günther Nagel |
| The invention relates to an internal gear machine for reversed operation in a closed circuit comprising an outer-toothed pinion, an inner-toothed ring gear meshing with the pinion; a housing; a filing that fills the sickle-shaped space between the pinion and the ring gear; the filling comprises two identical filler pieces; a stop pin is provided that is mounted in the housing and against which the filler pieces are supported by their front faces; the housing has two pressure lines and a drain outlet; the filler pieces are symmetrically disposed relative to a plane (symmetrical plane) extending through the center points of the pinion and the ring gear; the two pressure lines are located on both sides of the symmetrical plane viewed in axial direction. | ||||||
| 165 | Reversible variable displacement hydraulic pump and motor | US09784763 | 2001-02-15 | US20010036411A1 | 2001-11-01 | Frank H. Walker |
| A compact high efficiency vane pump is disclosed having a unique T-shaped vane and rotor slot configuration with a roller tip vane in a uniquely configured chamber. To minimize friction in chamber diameter, a pressure plate is provided which is hydraulically balanced, both in the forward and reverse pump and motor modes, having micro pressure pulses which vary multiple times per rotor rotation in order to compensate for varying hydraulic axial load on the housing. | ||||||
| 166 | Drive systems | US664444 | 1996-06-21 | US5782083A | 1998-07-21 | Stephen Mark Hodge |
| A hydrostatic drive comprises a motor and a gerotor pump having its annulus or its rotor axially split into two parts of unequal length, one of the two parts being angularly shiftable relative to the other to enable the drive to be shifted between forward, reverse, and neutral conditions. | ||||||
| 167 | Eccentric pump with lock valve and with bidirectional rotational operation | US393263 | 1995-02-23 | US5573388A | 1996-11-12 | Lorant Tar; Laszlo Legman; Iibor Vegh |
| An eccentric pump with lock valve and with bidirectional rotational operation, mainly for lubricant circulation of drives comprises a stationary outer casing having two parallel side walls and a cylindrical inner surface between the side walls, and further having inlet and outlet openings being sealingly separated and terminating in the cylindrical inner surface, a middle shaft arranged within the casing concentrically to the cylindrical inner surface and having a cylindrical surface being eccentric to the middle shaft as well as to the cylindrical inner surface of the casing, a circular sealing ring being sealingly displaceable in respect of the eccentric surface of the shaft as well as to inner wall portions of the casing, and further having a radial slot sealingly engaging a stationary pin with its both limiting surfaces. The improvement achieved by this invention is that an inner slide member is arranged between the casing and the circular sealing ring, the slide member being sealingly but moveably attached to inner surfaces of the casing, and the slide member being rotatable between a first position and a second position, and the casing has two inlet openings and at least one outlet opening, and the slide member has two through bores, the first through bore is in communication with one inlet opening, the second through bore with at least one outlet opening, in the first position of the slide member, and the first through bore is in communication with at least one outlet opening, the second through bore with the other inlet opening, in the second position of the slide member, and the pin is fixed to the slide member and is sealingly separating the through bores from each other. Therefore, the eccentric pump can be mounted directly on the force transmitting shaft of the drive and the shaft can rotate in both directions without stopping the liquid discharge. | ||||||
| 168 | Hydraulic pump | US700516 | 1991-05-15 | US5181835A | 1993-01-26 | Gregory D. Cook |
| A hydraulic pump having a pump body formed by stacked plates mounted end-to-end. First and second ports for delivery and return of hydraulic fluid are formed through a port plate that is surmounted by a valve plate through which first and second main valve passages, each aligned with the first and second ports respectively, are formed. The valve plate is surmounted by a manifold plate in which first and second fluid distribution chambers, fluidly communicated with the first and second main valve passages respectively, are formed. A pump plate atop the manifold plate contains a gear assembly in a pumping chamber formed in the ends of the pump and manifold plates that draws fluid from one fluid distribution chamber and discharges it to the other. Each main valve passage contains a main pump valve that is biased for movement toward a sealing position that blocks fluid flow from through the main valve passage and each main pump valve is engaged by pistons in piston chambers that intersect the main valve passage in which the valve is disposed and opens to the fluid distribution chamber communicated with the other main valve passage. | ||||||
| 169 | Reversible geroter pump with pivoting carrier unidirectional flow | US311937 | 1989-02-16 | US4944662A | 1990-07-31 | Robin E. Child |
| A reversible unidirectional flow gerotor pump (FIG. 1) has an externally cylindrical internally lobed rotor (36) internally meshed with an eccentrically located externally lobed male rotor having a smaller number of lobes (40) and the annulus runs in a cylindrical cavity in carrier ring 22 pivoted on pin 20 via slot 24. The carrier ring is located in a cylindrical cavity in the body of the pump and is free to translate along the line 18, with accompanied movement along the line 44, this movement occurring automatically when the direction of rotation of the driven rotor 40 is reversed, and resulting in continued pumping flow in the same direction through the pump. | ||||||
| 170 | Reversible flow vane pump with improved porting | US667276 | 1984-11-01 | US4578948A | 1986-04-01 | Allan I. Hutson; Dale L. Hunsberger |
| A reversible flow vane pump having a pump case with a pump chamber in which a rotor is mounted. The rotor has outwardly-opening slots which carry vanes which engage a cam ring and with fluid chambers between vanes. The cam ring can be adjusted to positions at either side of a neutral position to provide reversible flow operation between a pair of ports, with variable volume control. The ports are arranged to increase the length of time in which a port communicates with an intervane fluid chamber which is of decreasing volume for increased utilization of fluid being pressurized. A port which functions as an inlet port in a predominant mode of operation of the pump has an extension effective to increase the length of time in which an intervane fluid chamber of increasing volume can be filled with fluid. This port extension is blocked from communication with the intervane fluid chambers by the cam ring when the pump is operating other than in the predominant mode of operation in order to prevent communication between the ports. | ||||||
| 171 | Eccentric positioning means for a reversible pump | US903374 | 1978-05-05 | US4171192A | 1979-10-16 | David H. Taylor; Hendrie J. Grant; Lawrence J. Shirek |
| A spring biased member is disposed between the facing surfaces of the reversing eccentric and the rotor of a reversible, unidirectional flow pump. The member is keyed to the eccentric and applies frictional torque to the eccentric from the rotor to drive the eccentric to the proper position as determined by a fixed stop in accordance with the rotor's rotation. The member extends generally tangentially beyond either side of the contact points on the circular rotor face and presents a wedge-shaped confined space to the lubricant on the rotor face. The lubricant is driven into the wedge by the rotating rotor and raises the member from intimate contact with the rotor surface to maintain a thin lubricant film therebetween. This film of lubricant thus separates the member from the rotor face whenever there is relative motion between them to reduce wear on the otherwise contacting parts. | ||||||
| 172 | Reversible gear pump | US3796523D | 1972-12-13 | US3796523A | 1974-03-12 | ALBRECHT C; BROWN H |
| A sleeve-encased cartridge-type, unidirectional-flow, gear pump for compressors and the like having circumferentially aligned inlet openings in a stationary sleeve wall adjacent a covered end portion of the cavity thereof, and within said end portion an indexible flow connector block rotatably supported for turning to opposite limits of movement on a fixed concentric support. The block is resiliently urged against the end faces of an internal spur gear pump housed in the opposite end portion of the sleeve cavity, the inner gear of said pump being mounted on a pinion having a stationary axis offset from the sleeve axis and projecting from the end of said concentric block support, and the outer ring gear being rotatably supported by the sleeve wall. A drive connector plate engageable on the end of a compressor input shaft has a driving engagement to rotate the outer ring gear. The connector also has sealed passage means for joining an axial lubrication bore of an input shaft with a pump outlet bore in the offset pinion and the block support. One of a pair of radially directed passages in the support is connected to said outlet bore and the pump outlet side by an angled outlet passage of the indexible block at opposite limits of movement. An angled inlet passage in the block correspondingly connects the low pressure inlet side of the pump with an opening of the stationary sleeve wall.
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| 173 | Hydraulic systems | US3667859D | 1970-07-24 | US3667859A | 1972-06-06 | DRAGSUND INGE KORE; NAAS ERLING M |
| HYDRAULIC SYSTEMS OF THE LOW PRESSURE TYPE WHICH COMPRISE A PUMP DRIVING A MOTOR, THE WORKING MEDIUM SUPPLY AND DISCHARGE OF WHICH IS CONTROLLED BY A HANDOPERATED CONTROL VALVE, SAID SYSTEMS BEING PROVIDED WITH
AN AUTOMATICALLY CONTROLLED BY-PASS PASSAGE FROM MOTOR TO PUMP. THE PASSAGE OPENING IN SAID BY-PASS PASSAGE IS CONTROLLED BY PRESSURE OF OIL IN AN AREA BETWEEN THE SLIDE OF THE CONTROL VALVE AND THE MOTOR. |
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| 174 | Power steering apparatus | US3610105D | 1969-04-22 | US3610105A | 1971-10-05 | TOMITA TAMAKI |
| THE PRESENT INVENTION RELATES TO POWER STEERING APPARATUS IN WHICH THE OPERATION OF A SPOOL VALVE IS RENDERED EASY BY PREVENTING THE STEERING FORCE OR THE REAFCTION THERETO FROM ACTING ON THE SPOOL VALVE. IN THIS APPARATUS THE SPOOL VALVE IS SCREWED ONTO A STEERING SHAFT CONNECTED TO THE STEERING WHEEL, THE ROTATING SHAFT FOR DEFLECTING THE STEERABLE FRONT WHEELS IS CONNECTED TO THE STEERING SHAFT BY RESILIENT COUPLING MEANS, THE HYDRAULIC PRESSURE CIRCUIT IS CONTROLLED BY THE DISPLACEMENT OF THE SPOOL VALVE, AND THE STEERING TORQUE IS BOOSTED BY HYDRAULIC PRESSURE.
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| 175 | Reversible hydraulic transmission | US59263266 | 1966-11-07 | US3397598A | 1968-08-20 | ZIERICK AMBROSE E |
| 176 | Automatically reversible gear pump | US39361064 | 1964-09-01 | US3307480A | 1967-03-07 | KROPIWNICKI TADEK M |
| 177 | Reversible gear pump with unidire ctional flow | US23061062 | 1962-10-15 | US3208392A | 1965-09-28 | GARRISON CHRISTOPHER O; SHORT JAMES A |
| 178 | Hydraulic cam motor vane switching system | US38724864 | 1964-05-27 | US3194122A | 1965-07-13 | KEE WILLIAM R |
| 179 | Motor with delayed pressure loading | US17520562 | 1962-02-23 | US3160072A | 1964-12-08 | MARTIN ROBERT J |
| 180 | Variable capacity, reversible flow hydraulic rotary pump and system | US85377659 | 1959-11-18 | US3008423A | 1961-11-14 | MILLER EUGENE J |
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