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公开(公告)号：US11493037B1
公开(公告)日：2022-11-08
申请号：US17034910
申请日：2020-09-28
申请人： Laverne Schumann
发明人： Laverne Schumann
摘要： One embodiment of a modular pump includes a cover and a housing that may be engaged with one another during operation. A gearset may be positioned within an internal portion of the housing. If the modular pump is configured as a rotary pump, the gear set may be comprised of an inner gear positioned within a portion of a ring gear. The modular pump may include a spacer positioned between the cover and the housing to allow the modular pump to be configured with gear sets of varying axial dimensions.
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公开(公告)号：US20220316473A1
公开(公告)日：2022-10-06
申请号：US17641530
申请日：2020-09-03
申请人： HITACHI ASTEMO, LTD.
发明人： Atsushi NAGANUMA
摘要： Discharge port (26) as arc-recessed discharge portion is formed by cutting on bottom surface (13a) of pump accommodating portion (13) of variable displacement pump. On mounting surface (1b) of housing body (1), first low pressure chamber (281) is formed at position overlapping with discharge port (26) in radial direction of pump structure (14) formed by driving shaft (3), rotor (4) and vanes (5) Drain hole (28b) communicating with low pressure portion located outside housing body (1) is formed on bottom surface (28a) of first low pressure chamber (281) along direction of rotation axis (O1) of pump structure (14). Low pressure portion has pressure that is hydraulic pressure of oil discharged from discharge port (26) or less. Oil from discharge port (26), having higher pressure than first low pressure chamber (281), flows into first low pressure chamber (281) by pressure difference between discharge port (26) and first low pressure chamber (281).
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公开(公告)号：US20220235801A1
公开(公告)日：2022-07-28
申请号：US17586152
申请日：2022-01-27
发明人： Stefan Küchle , Thomas Tontsch , Simone Schilling
摘要： A control valve for a pump for delivering a fluid. The control valve includes: a valve housing which delineates a piston chamber; a piston which can be moved within the piston chamber; and a fluid channel which ports into the piston chamber via a port opening, wherein the port opening defines a port control edge. The valve housing includes a recess which extends into the fluid channel, wherein the recess defines a recess control edge which is axially offset with respect to the port control edge, and/or the piston includes a piston recess which defines a piston recess control edge.
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公开(公告)号：US11268508B2
公开(公告)日：2022-03-08
申请号：US16462473
申请日：2017-10-27
发明人： Shigeyuki Miyazawa
摘要： A variable displacement pump according to the present invention is notably configured such that the opening area of a variable metering orifice (MO) is variably controlled by a second control valve (6) as a spool valve having a second spool valve body (61). According to this type of the second control valve (6), a larger amount of movement (stroke movement) of the second spool valve body (61) can be ensured. Consequently, the opening area of the variable metering orifice (MO) can be controlled without being restricted by a range of variation in a proper discharge amount based on an amount of movement of a cam ring (2), thereby achieving sufficient energy conservation of the pump.
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公开(公告)号：US11060520B2
公开(公告)日：2021-07-13
申请号：US15530770
申请日：2017-02-27
申请人： Joe Dick Rector
摘要： A rotary, self-priming, positive displacement pump is described. The pump may include a pump housing including an inlet and an outlet, a pump chamber including an upper wall, a lateral wall, and a floor, first and second rotary impellers in the pump chamber, and a pair of gears each secured to the first and second rotary impellers, and a pressure relief feature operable to relieve pressure developing in a relatively high pressure zone of the pump chamber. The gears mesh with each other to ensure that the vanes do not contact one another during rotation. The pressure relief feature may comprise one or more channels formed in the pump housing and/or the first and second rotary impellers. The channels connect the high pressure zone with another zone to redistribute pressure. The channels may include one continuous channel or alternatively, a plurality of unconnected channels.
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公开(公告)号：US11054026B2
公开(公告)日：2021-07-06
申请号：US16698566
申请日：2019-11-27
申请人： Project Phoenix, LLC
发明人： Thomas Afshari
IPC分类号： F16H61/4008 , F04C14/08 , F04C14/24 , F04C15/00 , F03C2/08 , F04C2/08 , F16H39/36 , F16H61/4035 , F16H61/44 , F16H61/465
摘要： A hydrostatic transmission system includes a hydraulic motor and at least one proportional control valve and at least one pump connected to the hydraulic motor to provide fluid to operate the hydraulic motor. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The hydrostatic transmission system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover and concurrently establishes an opening of the at least one proportional control valve to adjust at least one of a flow and a pressure in the hydrostatic transmission system to an operational set point.
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公开(公告)号：US11053941B2
公开(公告)日：2021-07-06
申请号：US16398725
申请日：2019-04-30
申请人： LG ELECTRONICS INC.
发明人： Junghoon Park , Byeongchul Lee , Kitae Jang , Jongtae Her
摘要： A motor-operated compressor includes a housing and a driving motor disposed in an inner space of the housing. The driving motor includes a stator and a rotor. A rotary shaft is coupled to the rotor. A first scroll is provided on one side of the driving motor and the rotary shaft passes through and is rotatably coupled to the first scroll. A second scroll is coupled to the first scroll and an eccentric part of the rotary shaft passing through the first scroll to form a compression chamber between the first scroll and the second scroll. A frame is provided opposite to the driving motor with the first scroll and the second scroll interposed therebetween and configured to axially support the second scroll and radially support one end of the rotary shaft passing through the second scroll.
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公开(公告)号：US10677352B2
公开(公告)日：2020-06-09
申请号：US15520386
申请日：2015-10-06
申请人： Project Phoenix, LLC
发明人： Thomas Afshari
IPC分类号： F16H61/4008 , F03C2/08 , F04C2/08 , F04C14/08 , F16H61/465 , F04C15/00 , F16H39/36 , F16H61/4035 , F16H61/44 , F04C14/24
摘要： A hydrostatic transmission system includes a hydraulic motor and at least one proportional control valve and at least one pump connected to the hydraulic motor to provide fluid to operate the hydraulic motor. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The hydrostatic transmission system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover and concurrently establishes an opening of the at least one proportional control valve to adjust at least one of a flow and a pressure in the hydrostatic transmission system to an operational set point.
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公开(公告)号：US10648467B2
公开(公告)日：2020-05-12
申请号：US15835066
申请日：2017-12-07
申请人： IHI CORPORATION
发明人： Kenji Takamiya , Seiei Masuda
IPC分类号： F03C2/00 , F03C4/00 , F04C18/00 , F04C11/00 , F04C14/02 , F04C14/24 , F04C2/14 , F01C21/02 , F16C25/04 , F04C2/08 , F04C2/10 , F04C15/00 , F16C17/02 , F16C17/18
摘要： A gear pump is comprised of a driving gear, a first driven gear and second driven gears mutually in mesh; a housing accommodating them and defining a flow path including a first suction port, a second suction port, a first pressure port and a second pressure port; a floating comprising a thrust face bearing a floating force exerted by fluids and first, second and third pressure-receiving faces respectively oriented in a direction opposed to the thrust face; a first pressurizing chamber having fluid connection with the first pressure port or the second pressure port to exert pressure on the first pressure-receiving face; a second pressurizing chamber having fluid connection with the first suction port to exert pressure on the second pressure-receiving face; and a third pressurizing chamber having fluid connection with the second suction port to exert pressure on the third pressure-receiving face.
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公开(公告)号：US10563652B2
公开(公告)日：2020-02-18
申请号：US15326561
申请日：2014-07-18
申请人： Melling Tool Company
摘要： A variable displacement vane pump includes a biasing element for urging the control ring toward a first position that corresponds to a maximum volumetric capacity of the pump. Fluid pressure within a control chamber urges the control ring toward the second position. A feedback path is in communication with a fluid outlet of the pump for supplying a pressurized fluid. A first supply path provides the pressurized fluid to the fluid inlet. A second supply path provides the pressurized fluid to the control chamber. A valve controls flow of the pressurized fluid via the second supply path by moving between a fully open position and a fully closed position in which flow of the pressurized fluid along the second supply path is prevented by the valve. Moving the valve from the open position to the closed position increases the fluid pressure within the control chamber.
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