公开(公告)号：US20240392728A1

公开(公告)日：2024-11-28

申请号：US18202534

申请日：2023-05-26

Applicant: Hamilton Sundstrand Corporation

Inventor： Ryan Shook ,  Ryan Prescott Susca

IPC: F02C9/30 ,  F04C14/24

Abstract: A system includes a variable displacement pump (VDP) in fluid communication with an inlet line and with an outlet line. The VDP includes a variable displacement mechanism configured to vary pressure to the outlet line. An electromechanical actuator (EMA) is operatively connected to actuate the variable displacement mechanism. A flow sensing valve (FSV) connected in the outlet line. The FSV includes a sensor configured to generate sensor data indicative of flow out of the outlet line. A controller is operatively connected to the EMA to control the variable displacement mechanism based on the sensor data to support flow demands from one or more downstream systems.

公开(公告)号：US12085180B2

公开(公告)日：2024-09-10

申请号：US18010210

申请日：2021-12-16

Applicant: MITSUBA Corporation

Inventor： Hiroki Saito ,  Yusuke Fujita ,  Hiroshi Ooka ,  Masahiko Tsuchida

IPC: F16K7/00 ,  F16K17/04 ,  F16K27/02 ,  F04C14/24

CPC classification number: F16K17/04 ,  F16K27/0209 ,  F04C14/24

Abstract: The invention suppresses hysteresis. A relief valve switching between whether to discharge oil through movement of a valve body includes: a first spacing part, in which the valve body moves; a second space part, connected with the first space part and having a diameter smaller than a diameter of the first space part; an elastic body, connected with the valve body; a seal part, disposed in a circumferential direction of the valve body; and a third space part, formed in the first space part.

公开(公告)号：US20240035469A1

公开(公告)日：2024-02-01

申请号：US18224471

申请日：2023-07-20

Applicant: Pump Technology Solutions PS GmbH

Inventor： Martin Heilig

IPC: F04C14/24 ,  F04C15/06 ,  F04C2/344

CPC classification number: F04C14/24 ,  F04C15/06 ,  F04C2/344 ,  F04C2270/185

Abstract: Apparatus for regulating delivery volume of a displacement pump comprises a displaceable regulating piston and a spring element acting on the regulating piston in a displacement direction (x) thereof. The apparatus further comprises a means for applying a force to the regulating piston against an effective direction (a) of the spring element.

公开(公告)号：US11840422B2

公开(公告)日：2023-12-12

申请号：US16636838

申请日：2018-08-20

Applicant: MACNAUGHT PTY LTD

Inventor： Marco Uccellani ,  Prabhjot Singh

IPC: B65H75/44 ,  F04C2/10 ,  F04C14/24 ,  F04C14/04 ,  A62B1/12

CPC classification number: B65H75/4442 ,  F04C2/10 ,  F04C2/102 ,  F04C14/24 ,  A62B1/12 ,  B65H2403/7252 ,  F04C14/04 ,  F04C2210/206 ,  F04C2240/60 ,  F04C2240/605 ,  F04C2270/205

Abstract: A braking system for a hose or cable reel including a housing configured to fit inside a drum of the reel and to rotate with the drum during use, and a gerotor including inner and outer gears disposed inside the housing, wherein the inner gear is attachable to a shaft of the reel and the outer gear is configured to rotate relative to the inner gear with the housing during use thereby causing hydraulic fluid to be pumped through the gerotor and impede rotation of the drum.

公开(公告)号：US11656003B2

公开(公告)日：2023-05-23

申请号：US16814487

申请日：2020-03-10

Applicant: Emerson Climate Technologies, Inc.

Inventor： James W. McBean ,  Robert C. Stover

IPC: F04C18/02 ,  F04C29/04 ,  F04C14/24 ,  F04C14/26 ,  F04C28/24 ,  F04C28/28 ,  F04C29/12 ,  F25B1/04 ,  F25B31/02 ,  F25B41/20

CPC classification number: F25B1/04 ,  F04C14/24 ,  F04C14/26 ,  F04C18/02 ,  F04C18/0207 ,  F04C18/0269 ,  F04C28/24 ,  F04C28/28 ,  F04C29/04 ,  F04C29/12 ,  F25B31/026 ,  F25B41/20

Abstract: A compressor includes a shell, first and second scroll members, a fitting assembly and a valve assembly. The first scroll member includes a first end plate having a first spiral wrap extending therefrom. The second scroll member includes a second end plate having a second spiral wrap extending therefrom and an injection passage formed in the second end plate. The second spiral wrap is meshingly engaged with the first spiral wrap to form compression pockets. The injection passage is in fluid communication with the compression pockets. The fitting assembly is in fluid communication with the injection passage. The valve assembly coupled to one of the second scroll member and the fitting assembly and movable between a closed position in which fluid communication between the compression pockets and the suction chamber is prevented and an open position in which fluid communication between the compression pockets and the suction chamber is allowed.

公开(公告)号：US11493037B1

公开(公告)日：2022-11-08

申请号：US17034910

申请日：2020-09-28

Applicant: Laverne Schumann

Inventor： Laverne Schumann

IPC: F04C2/20 ,  F04C15/00 ,  F04C14/24 ,  F04C15/06 ,  F01M1/02 ,  F04C13/00

Abstract: 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.

公开(公告)号：US20220316473A1

公开(公告)日：2022-10-06

申请号：US17641530

申请日：2020-09-03

Applicant: HITACHI ASTEMO, LTD.

Inventor： Atsushi NAGANUMA

IPC: F04C14/22 ,  F04C14/24

Abstract: 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).

公开(公告)号：US20220235801A1

公开(公告)日：2022-07-28

申请号：US17586152

申请日：2022-01-27

Applicant: Schwäbische Hüttenwerke Automotive GmbH

Inventor： Stefan Küchle ,  Thomas Tontsch ,  Simone Schilling

IPC: F15B13/042 ,  F04B49/00 ,  F04B49/08 ,  F04B49/24 ,  F04C14/24 ,  F16K11/07 ,  F16K17/10

Abstract: 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.

公开(公告)号：US11268508B2

公开(公告)日：2022-03-08

申请号：US16462473

申请日：2017-10-27

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Shigeyuki Miyazawa

IPC: F04C2/344 ,  F04C14/22 ,  F04C14/12 ,  F04C14/24 ,  F04C28/12

Abstract: 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.

公开(公告)号：US11060520B2

公开(公告)日：2021-07-13

申请号：US15530770

申请日：2017-02-27

Applicant: Joe Dick Rector

Inventor： Richard Wallace Hibbard

IPC: F01C1/18 ,  F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C2/12 ,  F04C2/08 ,  F04C14/24 ,  F04C15/00

Abstract: 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.