公开(公告)号：US12055124B1

公开(公告)日：2024-08-06

申请号：US18616194

申请日：2024-03-26

Applicant: HUAQIAO UNIVERSITY

Inventor： Tong Guo ,  Xiaomin Huang ,  Tao Luo ,  Tianliang Lin ,  Cheng Miao ,  Jianping Liu ,  Fumin Que

IPC: F03C1/40 ,  F03C1/04 ,  F03C1/053 ,  F04B1/04 ,  F04B1/0452 ,  F04B1/053 ,  F04B1/06 ,  F04B53/16 ,  F15B15/14

CPC classification number: F03C1/0447 ,  F03C1/04 ,  F03C1/053 ,  F04B1/04 ,  F04B1/0452 ,  F04B1/053 ,  F04B1/06 ,  F04B53/16 ,  F15B15/1447

Abstract: A four-quadrant radial piston hydraulic device includes a housing, plunger assemblies, an eccentric spindle rotatably disposed on the housing, pilot-operated check valves one-to-one corresponding to the plunger assemblies, two-way cartridge valves one-to-one corresponding to the plunger assemblies, a distribution shaft and a confluence plate. A reversing slide valve is disposed on the confluence plate. A working method of a four-quadrant radial piston hydraulic device is also provided. When the radial piston hydraulic device is used as a hydraulic motor and a hydraulic pump, it is capable of realizing two-way rotation, which solves a limitation of valve flow distribution in motor application.

公开(公告)号：US20240254979A1

公开(公告)日：2024-08-01

申请号：US18629397

申请日：2024-04-08

Applicant: Kerr Machine Co.

Inventor： Mark S. Nowell ,  Kelcy Jake Foster ,  Micheal Cole Thomas ,  Christopher Todd Barnett

IPC: F04B35/00 ,  B23P15/00 ,  E21B43/26 ,  F04B1/0452 ,  F04B1/0461 ,  F04B1/0538 ,  F04B15/04 ,  F04B17/05 ,  F04B37/12 ,  F04B53/10 ,  F04B53/16 ,  F04B53/22 ,  F16K1/38 ,  F16K1/44 ,  F16K27/02

CPC classification number: F04B35/002 ,  B23P15/00 ,  F04B1/0452 ,  F04B1/0461 ,  F04B1/0538 ,  F04B15/04 ,  F04B37/12 ,  F04B53/10 ,  F04B53/108 ,  F04B53/1087 ,  F04B53/16 ,  F04B53/22 ,  F16K1/385 ,  F16K1/44 ,  F16K27/0254 ,  E21B43/2607 ,  F04B17/05 ,  F04B2201/0603

Abstract: A fluid end is formed from a first body attached to a separate second body. Each body includes an external surface. When the bodies are attached, their respective external surfaces are in flush engagement. A plurality of bores are formed in the second body that are alignable with a plurality of corresponding bores formed in the first body. The fluid end may be used with seals disposed within recesses within each bore to seal against corresponding sealing surfaces. Further, retaining closures may be bolted to the fluid end bodies, such that the closures have a threadless connection to the fluid end bodies. Various combinations of such components may be utilized.

公开(公告)号：US20230358219A1

公开(公告)日：2023-11-09

申请号：US18355849

申请日：2023-07-20

Applicant: Insulet Corporation

Inventor： Daniel ALLIS ,  Ian MCLAUGHLIN ,  Kenneth Phillips

IPC: F04B19/00 ,  F04B1/02 ,  F04B53/10 ,  F04B1/047 ,  F04B1/0452 ,  F04B7/00 ,  F04B9/06 ,  F04B19/22 ,  F04B23/02

CPC classification number: F04B19/006 ,  F04B1/02 ,  F04B53/109 ,  F04B1/047 ,  F04B1/0452 ,  F04B7/0053 ,  F04B7/0049 ,  F04B7/0026 ,  F04B7/003 ,  F04B7/0096 ,  F04B9/06 ,  F04B19/22 ,  F04B23/02

Abstract: A low-force, non-displacement, micro/miniature valve and/or pump assembly is provided. A tube component having a first side port coupled to an inlet portion and a second side port coupled to an outlet portion can be selectively moved to alternatively couple the side ports to a first or second piston pump chamber. First and second pistons can be actuated after positioning the tube component to either draw in fluid or push out fluid from either the first or second piston pump chambers during each actuation of the pistons. The fluid can be drawn in from a reservoir and can be expelled to a patient for providing a dose of the fluid to the patient.

公开(公告)号：US20230358217A1

公开(公告)日：2023-11-09

申请号：US18142104

申请日：2023-05-02

Applicant: REGENTS OF THE UNIVERSITY OF MINNESOTA

Inventor： Thomas Richard Chase ,  Perry Yan-Ho Li ,  Michael B. Rannow

IPC: F04B1/0452 ,  F04B1/0413 ,  F04B1/0531

CPC classification number: F04B1/0531 ,  F04B1/0413 ,  F04B1/0452

Abstract: A partial stroke pump or motor includes a piston coupled to a rotating shaft to evacuate a fluid within a cylinder during an upstroke. A latching check valve includes an actuator piston that is displaceable within a center cavity to bypass a blocking member in a bypass state. The actuator piston is driven by a latch supply line. A spool of a rotary valve selectively couples one of the low and pilot pressure supplies to the latch supply line over different timing angle ranges of the rotating shaft. Coupling of the pilot pressure to the latch supply line causes the bypass state. When operating as a pump, the bypass state causes the pressure in the cylinder to fall below the high pressure during part of the upstroke. When operating as a motor, the bypass state allows the fluid to be evacuated from the cylinder during the upstroke.

公开(公告)号：US20230304480A1

公开(公告)日：2023-09-28

申请号：US18326349

申请日：2023-05-31

Applicant: Alfred Kärcher SE & Co. KG

Inventor： Robert Nathan

IPC: F04B1/0452 ,  B08B3/02

CPC classification number: F04B1/0452 ,  B08B3/02

Abstract: A piston pump for a high-pressure cleaning device is provided, having a pump housing, which includes a first housing part and a second housing part. The first housing part forms a suction conduit and a pressure conduit, and the second housing part forms a plurality of pump chambers into each of which a reciprocally movable piston dips and which are each in flow connection with the suction conduit by way of an inlet channel and with the pressure conduit by way of an outlet channel. The inlet channel can be closed by an inlet valve and the outlet channel can be closed by an outlet valve. The second housing part includes a valve receptacle, and that the piston pump includes an outlet valve assembly, wherein the outlet valve assembly comprises an outlet part, which is inserted into the valve receptacle and forms all outlet valve seats.

公开(公告)号：US20230272786A1

公开(公告)日：2023-08-31

申请号：US18313515

申请日：2023-05-08

Applicant: Kerr Machine Co.

Inventor： Micheal Cole Thomas ,  Christopher Todd Barnett ,  Kelcy Jake Foster ,  Nicholas Son ,  John Keith ,  Mark S. Nowell

IPC: F04B7/02 ,  F04B53/10 ,  F04B7/00 ,  F04B53/00 ,  F04B53/16

CPC classification number: F04B7/0208 ,  F04B53/1022 ,  F04B7/0088 ,  F04B53/007 ,  F04B53/164 ,  F04B7/0266 ,  F04B1/0452

Abstract: A fluid end comprising a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section is releasably attached to a connect plate. Each connect plate is attached to a power source using a plurality of stay rods. Each fluid end section comprises a housing in fluid communication with a pair of intake manifolds and a discharge conduit. A fluid routing plug is installed within each housing and is configured to route fluid throughout the housing. A plunger is installed within stuffing box attached to each housing. A number of features, including the location of seals within bore walls and carbide inserts within valve guides, aid in reducing or transferring wear.

公开(公告)号：US20230204114A1

公开(公告)日：2023-06-29

申请号：US18170662

申请日：2023-02-17

Applicant: SPM Oil & Gas Inc.

Inventor： Jacob A. Bayyouk

IPC: F16K25/00 ,  F16K1/42 ,  F16K1/46 ,  F04B1/0452 ,  F04B53/10 ,  F16K15/06

CPC classification number: F16K25/005 ,  F16K1/42 ,  F16K1/465 ,  F04B1/0452 ,  F04B53/10 ,  F04B53/1087 ,  F16K15/063

Abstract: A valve assembly for use in a fracturing pump including a valve member movable into and out of engagement with a valve seat body. The valve seat body includes an outer surface and an inner surface, the inner surface forming a fluid bore extending between a first end and a second end of the valve seat body. The body further includes a seating surface extending radially from the inner surface and facing the valve member, the seating surface having a recessed area. An insert is disposed in the recessed area forming at least a portion of the inner surface and at least portion of the seating surface. The valve seat body first end has a diameter different from a diameter valve seat body second. The difference between diameters allows the valve seat body outer surface to be supported by the fluid passageway.

公开(公告)号：US20180112653A1

公开(公告)日：2018-04-26

申请号：US15298257

申请日：2016-10-20

Applicant: Christopher John DENT

Inventor： Christopher John DENT

IPC: F04B1/16 ,  F04B1/14 ,  F04B1/12 ,  F04B53/00 ,  F04B53/10 ,  F04B53/14 ,  C02F1/44 ,  C02F1/00

CPC classification number: F04B1/16 ,  C02F1/001 ,  C02F1/441 ,  C02F2103/08 ,  F04B1/0408 ,  F04B1/0421 ,  F04B1/0452 ,  F04B1/053 ,  F04B1/0538 ,  F04B1/124 ,  F04B1/143 ,  F04B5/02 ,  F04B7/0011 ,  F04B9/045 ,  F04B53/006 ,  F04B53/10 ,  F04B53/1092 ,  F04B53/144 ,  Y02A20/131

Abstract: A pump in desalination systems has four cylinders, each having a double acting piston. Each cylinder and piston defines a feed chamber and a recovery chamber. The pistons connect to a common drive. The connection to the common drive is such that the pistons reciprocate in a sequence equally spaced in time. Reciprocating valving for each piston is driven by the common drive to be 90 degrees out of phase with the respective piston. The valving connects the recovery chamber alternately to an inlet manifold for an intake stroke of the piston relative to the recovery chamber, and to an outlet manifold for a discharge stroke of the piston relative to the recovery chamber. A brief period of closure coincides with top dead centre and bottom dead centre of the piston, during which the recovery chamber is blocked off from both the inlet and outlet manifolds. The reciprocating valving is midway between its top dead centre and bottom dead centre during the period of closure.

公开(公告)号：US09849866B2

公开(公告)日：2017-12-26

申请号：US14681033

申请日：2015-04-07

Applicant: MANDO CORPORATION

Inventor： Yong Kap Kim

IPC: F04B19/00 ,  B60T8/40 ,  F04B1/04 ,  F04B53/00 ,  F04B53/10

CPC classification number: B60T8/4031 ,  F04B1/0452 ,  F04B53/001 ,  F04B53/1002 ,  F04B53/101

Abstract: A piston pump assembly of an electronic controlled brake device for a vehicle includes: an inlet housing configured to accommodate a reciprocating piston and elastically support the piston; an outlet housing configured to accommodate the inlet housing and form a working chamber that allows a working fluid to be introduced from the inlet housing; an outlet ball valve accommodated in the working chamber to open and close a flow passage of the working fluid that is introduced from the inlet housing to the outlet housing; an outlet spring accommodated in the working chamber to elastically support the outlet ball valve toward the inlet housing; and a damper accommodated in the working chamber and mounted within the outlet spring to allow shape deformation while contacting the outlet ball valve. When the outlet ball valve is pushed and pressed toward an end of the working chamber, the damper generates viscous damping while discharging the accommodated working fluid into the working chamber. Accordingly, it is possible to actively reduce noise or vibration upon initial operation of the electronic controlled brake device or in a low frequency section, thereby improving ride comfort.

公开(公告)号：US20170356411A1

公开(公告)日：2017-12-14

申请号：US15539215

申请日：2015-11-25

Applicant: Robert Bosch GmbH

Inventor： Benedetto Loiacono ,  Domenico Macchia ,  Luisa Moscarella ,  Michele Antonio Iannuzzi

IPC: F02M59/10 ,  F04B1/04 ,  F02M59/46 ,  F02M59/06 ,  F04B53/12 ,  F04B53/16

CPC classification number: F02M59/102 ,  F02M59/06 ,  F02M59/464 ,  F04B1/0421 ,  F04B1/0452 ,  F04B1/0456 ,  F04B53/12 ,  F04B53/16

Abstract: A pump unit for feeding fuel, preferably diesel fuel, to an internal combustion engine; the pump unit (1) comprising: a head (4) inside which a cylinder (12) extending along an axis (A1) is formed; a pumping piston (5) extending along the axis (A1) and slidingly coupled with the cylinder (12); a through-hole (13) which extends from the cylinder (12) towards the outside of the pump unit (1); an intake chamber (8) communicating with the cylinder (12) via the hole (13); an intake valve (7) which controls the flow of fuel from the intake chamber (8) to the hole (13); a cap (23; 123; 223) which is connected to the head (4), is arranged on the opposite side to the pumping piston (5) and can be selectively fixed along an outer surface (25) of the head (4) so as to close the intake chamber (8) on one side.