| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Gear Pump | US12651790 | 2010-01-04 | US20100247362A1 | 2010-09-30 | Toshihiro KOIZUMI; Masaki Misunou; Chiharu Nakazawa |
| A gear pump includes: a pump chamber formed in the housing; a gear disposed in the pump chamber; a side plate disposed between a wall of the pump chamber and the gear, and arranged to seal a side surface of the gear, the side plate including an annular receiving portion formed between the wall of the pump chamber and the side plate, the receiving portion having a bottom portion and a side wall portion; a seal member disposed in the receiving portion of the side plate, and arranged to liquid-tightly separate the low pressure chamber and the high pressure chamber of the pump chamber; a pressure introducing section arranged to introduce a pressure generated by the pump operation, to a space between the bottom portion of the receiving portion and the seal member, and thereby to separate the seal member away from the bottom portion of the receiving portion. | ||||||
| 102 | High efficiency 2-stage fuel pump and control scheme for gas turbines | US11667741 | 2005-11-15 | US07770388B2 | 2010-08-10 | Mihir C. Desai |
| A two-stage system for delivering fuel to a gas turbine including a first stage variable pump for serving as a primary source of fuel, a second stage fixed pump for selectively supplementing the variable pump, a bypass valve connected to the fixed pump for loading and unloading the fixed pump and a regulator valve assembly connected to the variable pump and the bypass valve for controlling operation of the variable pump and the bypass valve. Preferably, the two-stage system also includes a control valve connected to the regulator valve assembly for setting a pressure differential across the regulator valve assembly and, thereby, loading and unloading the fixed pump. | ||||||
| 103 | Tandem pump valve structure | US11612015 | 2006-12-18 | US07677263B2 | 2010-03-16 | Takeshi Hoji; Satoshi Nagao; Keisuke Shinozaki |
| When the pressure in a main fluid supply channel is lower than a no-load operation start pressure, the spool moves against the biasing force of a biasing member, and the area of opening of a auxiliary fluid supply channel is reduced with regards to opening of the internal flow channel. When the pressure in the main fluid supply channel rises and reaches a no-load operation start pressure, the area of opening in the auxiliary fluid supply channel with regards to opening of the internal flow channel becomes smaller and while connected to the main fluid supply channel, the auxiliary fluid supply channel is connected to the return flow channel. When the pressure in the main fluid supply channel rises above the no-load operating start pressure and reaches a no-load operation pressure, the auxiliary fluid supply channel is cut off from the main fluid supply channel. | ||||||
| 104 | Fuel Pumping System | US12511531 | 2009-07-29 | US20100024778A1 | 2010-02-04 | Martin Kenneth Yates |
| A fuel pumping system comprises a high pressure pump having a drive input, a drive gear driven for rotation, in use, by the drive input, an idler gear driven by the drive gear, and an output gear driven by the idler gear, wherein the output gear is arranged to drive a rotor of an electrical generator and the idler gear is arranged to drive a rotor of a low pressure pump. | ||||||
| 105 | HYDRAULIC MACHINE | US12466280 | 2009-05-14 | US20090280021A1 | 2009-11-12 | Norman Ian Mathers |
| A hydraulic pump or motor includes a body having a chamber and a rotor rotatably mounted within the chamber. The chamber and rotor are shaped to define one or more rise regions, fall regions, major dwell regions and minor dwell regions between walls of the chamber and the rotor. The rotor has a plurality of slots and vanes located in each slot. Each vane is movable between a retracted position and an extended position. In the retracted position, the vanes are unable to work the hydraulic fluid introduced into the chamber whereas they are able to work the hydraulic fluid introduced into the chamber in the extended position. A vane retaining member that is selectively actuable enables the vanes to be retained in the retracted position. | ||||||
| 106 | Fluid-flow system, device and method | US12118500 | 2008-05-09 | US20080245526A1 | 2008-10-09 | Phillip Allard; Stanley D. Benham |
| Methods, devices, and systems are disclosed for combining fluids of different pressures and flow rates in, for example, gas gathering systems, gas wells, and other areas in which independently powered compressors or pumps are not desired. | ||||||
| 107 | Pump unit with multiple operation modes | US10516912 | 2003-06-02 | US07399165B2 | 2008-07-15 | Hitoshi Horiuchi; Yoshiyuki Ochi; Jun Nakatsuji |
| A first pump of small capacity and a second pump of large capacity are connected directly with each other and are driven by a variable-speed motor. The rotational speed of the variable-speed motor is controlled by a control device. In a first mode, a first discharge line of the first pump and a second discharge line of the second pump are disconnected with each other, making the first pump unloaded. With the first pump in the unloaded state, a constant-horsepower operation is performed, where the discharge fluid is brought into a high pressure by relatively small torque. In a second mode, the first discharge line and the second discharge line are connected with each other by a switching valve. With the first and second discharge lines in the connected state, a constant-horsepower operation is performed, where a high flow rate of discharge fluid is discharged at relatively low rotational speed. | ||||||
| 108 | Dual gear single outlet material pump and method of constructing such a pump | US10724675 | 2003-12-01 | US07037085B1 | 2006-05-02 | Patricia A. Stark; Jon Zook |
| A dual gear, single outlet material pump includes a base plate, a lower gear plate and two associated gears, a spacer plate, an idler shaft, a drive shaft, an upper drive gear, and an upper gear plate. An upper idler gear is housed within a tri-lobed aperture of an upper gear plate. A plurality of screw holes are through a top plate. A plurality of heating plates are coupled to the sides of the assembled pump and a plurality of temperature sensors are coupled to the recesses in the spacer plate. An outlet manifold couples with each of the outlets of the lower gear plate and the upper gear plate to form a single outlet. The method of construction produces an easily disassembled, cleaned, and re-assembled pump. | ||||||
| 109 | Device for supplying liquids, in particular, fuel | US09989950 | 2001-11-20 | US20020114703A1 | 2002-08-22 | Stanislaw Bodzak |
| A device for supplying liquids, in particular, fuel, has a first geared supply pump (30) with a pair of meshed gear wheels (41, 43) in a pump chamber, of which one is rotatably driven by means of a drive shaft (38). In the pump chamber (40), an inlet opens on a suction side (48) and an outlet (86) opens on a pressure side (49). In the direction of rotational axes (42, 45) of the gear wheels (41, 43) of the first supply pump (30), a second geared supply pump (60) is provided, which has a meshed pair of gear wheels (64, 68) in a pump chamber (62). One of the gear wheels (64) of the second supply pump (60) is rotatably and lockingly connectable to the drive shaft (38) by means of a coupling arrangement (66). The coupling arrangement (66) is controlled by the existing pressure on the pressure side (49) of the first geared supply pump (30). In this manner, with a low pressure, the gear wheel (64) is rotatably and interlockingly coupled to the drive shaft (38) and with a high pressure, the gear wheel (64) is separated from the drive shaft (38). Thus, with a lower pressure, both pumps supply fuel, and with a higher pressure, only the first pump supplies the fuel. | ||||||
| 110 | Hydraulic motor having multiple speed ratio capability | US10020971 | 2001-12-19 | US20020041816A1 | 2002-04-11 | John B. Heckel; Marvin L. Bernstrom |
| A multiple speed ratio gerotor motor having first (13) and second (19) gerotor gear sets as the displacement mechanisms, and a commutating valve member (43) of the well known type. In one embodiment (FIGS. 1-5) there is provided a selector valve section (15) disposed between the first and second gerotor gear sets, and in a low speed mode (FIG. 5A), fluid flows from the commutating valve member (43) through the first volume chambers (39), then through the selector valve section, then through the second volume chambers (66). In a high speed mode (FIG. 5B), flow out of the first volume chambers (39) is blocked by the selector valve section (15), and fluid in the second volume chambers (66) flows through the selector valve section to the case drain region (106). In a free wheel mode (FIG. 5C), both the first and second volume chambers are open to case drain. In another embodiment (FIG. 6), the selector valve section (15) is disposed between the commutating valve member (43) and the first gerotor gear set (13), and can permit, or block, fluid communication to either gerotor gear set separately, thus providing three speed capability. In either embodiment, the relative speed ratios which can be achieved are determined by the relative axial lengths of the two gerotor gear sets, thus providing much greater flexibility in the choice of high-speed, low-torque speed ratios. | ||||||
| 111 | Positive displacement pump systems with a variable control orifice | US09457717 | 1999-12-10 | US06296456B1 | 2001-10-02 | Alec Thornelow; Derek Keith Brighton; Matthew Williamson |
| A positive displacement pump system has first and second delivery passages for pumped fluid and a main delivery passage receiving flow from the first delivery passage and, via a non return valve, from the second delivery passage. A control valve is provided to apportion flow from the first and second delivery passage to an overspill port. A pressure sensitive control orifice is provided in the main discharge passage to receive the combined flows and the control orifice is of variable size. | ||||||
| 112 | Power efficient multi-stage twin screw pump | US671696 | 1996-06-28 | US5779451A | 1998-07-14 | Gregory John Hatton |
| There is disclosed an apparatus for pumping multiphase fluids in oil field production, particularly a twin-screw pump for providing a large pressure boost to high gas-fraction inlet streams. The pump includes a housing having an internal rotor enclosure, the enclosure having an inlet and an outlet and a plurality of rotors operably contained in the enclosure. Each rotor has a shaft and a plurality of outwardly extending threads affixed thereon, the rotors being shaped to provide a non-uniform volumetric delivery rate along the length of each rotor. The pump also has means for rotating the rotors, whereby a fluid stream entering from the inlet is subjected to a pumping action to transport the fluid stream to exit the rotor enclosure through the outlet. In one embodiment, the rotors have a plurality of threaded pumping stages separated by unthreaded non-pumping chambers. Further, the threads of each pumping stage may have a different screw profile to provide progressively decreasing inlet volumetric delivery rates from the inlet to the outlet of the rotor enclosure. The multiple stages provide better power efficiency than traditional twin-screw pumps for high-pressure boost operation at gas fractions up to 100% without seizing or loss of pressure boost. | ||||||
| 113 | Self unloading pump circuit for an automatic transmission having multiple pressure supply pumps | US164036 | 1988-03-04 | US4850813A | 1989-07-25 | Alan R. Fisher |
| A pump and regulator valve assembly having multiple pump and multiple regulator valve means that establish pressures of two or more operating pressure levels in a control system wherein the valve means has multiple valves that selectively respond to varying flow demands of the different regions of the control system to connect one or more pumps to reduced pressure regions when the flow demands of higher pressure regions are satisfied. | ||||||
| 114 | Volume control for multi-nozzle rotary pump filling systems | US850017 | 1986-04-10 | US4787822A | 1988-11-29 | Richard N. Bennett |
| A volume control for a multi-nozzle rotary pump filling system in which a plurality of rotary pumps are driven from a common drive. Each pump is connected with its own nozzle by way of a connection that includes a volume control operable to adjust the back pressure on the rotary pump to thereby vary the amount of product dispensed by the nozzle. In case of more viscous products, a by-pass line which includes a relief valve is also provided between the inlet side of the control unit and the in-feed side of the pump. | ||||||
| 115 | Device and process for monitoring cavitation in a positive displacement pump | US543067 | 1983-10-18 | US4512722A | 1985-04-23 | Pierre C. Mouton |
| A device and method are disclosed for monitoring the cavitation parameters of a positive displacement fuel pump. A flow proportional to the flow of the pump is branched off a supply line to a cavitation venturi at a pressure lower than the supply pressure, while regulating the proportional flow and the venturi so that the latter attains its cavitation range prior to the cavitation of the positive displacement pump. In this range, the pressure at the inlet of the venturi is equal to the critical feeder pressure of the volumetric pump. The difference between the supply pressure of the positive displacement pump and the pressure of the inlet of the venturi is detected and a control signal generated to activate an alarm or increase the pressure of the supply fluid. | ||||||
| 116 | Two-speed gerotor motor | US458227 | 1983-01-17 | US4480971A | 1984-11-06 | N. Einar Swedberg |
| A two-speed gerotor motor is disclosed of the type including a rotary disc valve member (55) of the type including valve passages (71 and 69) communicating between the inlet and outlet ports (61 and 65), respectively, and the fluid passages (57) defined by the port plate (19). The valve (55) also defines control valve passages (73) which communicate with an annular groove (75). Adjacent the valve member (55) is a valve seating mechanism (83) including a balancing ring member (85) which defines a plurality of axial passages (89) providing communication between a control fluid port (77) and the annular groove (75). As a result, the control valve passages may be communicated selectively with either the expanding volume chambers (29E) or the contracting volume chambers (29C). | ||||||
| 117 | Radial vane pump having variable displacement | US409007 | 1982-08-17 | US4445830A | 1984-05-01 | Frank Woodruff |
| A variable displacement vane pump includes a rotor (10) rotatably mounted in a casing (32). The casing (32) has a pair of relatively rotatable complementary cams (18,20). Each cam (18,20) has a surface shaped to provide an annular curvilinear track. The pump also has a first (14) and second (16) plurality of vanes slidably mounted upon the rotor (10). Each of the vanes (14,16) is sized and positioned to engage a corresponding cam (18,20). These vanes (14,16) are constrained in a radial direction by the cams (18,20) as the rotor (10) rotates. The vanes of the first (14) plurality engage one (18) of the cams, the other one (20) of the cams being engaged by the vanes of the second plurality (16). | ||||||
| 118 | Hydromechanical transmissions | US66860 | 1979-08-15 | US4347761A | 1982-09-07 | Karl G. Ahlen |
| This invention relates to a power group for driving a vehicle comprising a torque converter component, a complementary gear component, a component including a feeder fluid pump system, and a component including an automatic and manual control whereby not only tne individual components are used to provide their optimum effect but also the combined effect of the individual components is optimized. | ||||||
| 119 | Hydraulic valve system for controlling particularly a vehicle gearbox | US66859 | 1979-08-15 | US4262554A | 1981-04-21 | Karl G. Ahlen; Rainer B. Ketola |
| A hydraulic valve system for controlling operation of a motor vehicle gear box comprising a plurality of multi way valves of the disc-type in which the first multi way valve conveys pressure fluid to either one of two consumers and drains the consumer to which fluid is not conveyed, one of the two consumers comprising a valve system having two or three of the said multi way valves, each of which is operable to supply pressure fluid to one or other of two further consumers, and means to interlock the said two or three multi way valves so as to permit connection to only one of four or six consumers at any one time. | ||||||
| 120 | Vehicle transmission control system | US3527 | 1979-01-15 | US4262335A | 1981-04-14 | Karl G. Ahlen; Gunnar Wahlsten; Joseph Supanich |
| A vehicle transmission system is provided which comprises, in combination, a vehicle transmission and an electronic control system for converting input signals thereto related to operating conditions of the transmission to output control signals for the transmission in accordance with a predetermined set of criteria. The electronic control system senses a plurality of operating conditions of the transmission and produces digital input signals in accordance therewith, and includes a microprocessor for directly monitoring the state of the digital input signals, a programmable read-only memory connected to the microprocessor, a timing set-up for directly delivering clock pulses to the microprocessor, an output arrangement, connected to the microprocessor and including a latch, for producing output control signals, an addressing unit for coordinating the operation of the programmable read-only memory and the latch under the control of the microprocessor, and a random access memory for storing the states of signals being processed and enabling arithmetical operations to be performed with the stored signal states. A movement sensor senses shaft speeds so as to produce at least one of the digital input signals. The programmable read-only memory stores a series of coded instructions for repetitively controlling the operation of the microprocessor such that, on the basis of the input signals, output signals are produced which are transmitted to electromechanical operators, e.g., solenoid valves or relays, which control the operation of the transmission. | ||||||
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