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：US11655816B2

公开(公告)日：2023-05-23

申请号：US14707727

申请日：2015-05-08

Applicant: Danfoss Power Solutions GmbH & Co. OHG

Inventor： Elliott Gruber ,  Luke Wadsley

IPC: F04C15/00 ,  F04C2/12 ,  F04C15/06 ,  F04C29/12 ,  F04C29/00 ,  F04C29/06 ,  F04B53/16 ,  F04C2/02 ,  F04C2/16 ,  F04C2/18 ,  F04C2/344 ,  F04C18/02 ,  F04C18/16 ,  F04C18/18 ,  F04C18/12 ,  F04C18/344 ,  F04B11/00 ,  F04B39/12

CPC classification number: F04C15/0049 ,  F04B11/00 ,  F04B11/0091 ,  F04B39/12 ,  F04B53/16 ,  F04C2/025 ,  F04C2/126 ,  F04C2/16 ,  F04C2/18 ,  F04C2/344 ,  F04C15/064 ,  F04C18/0215 ,  F04C18/126 ,  F04C18/16 ,  F04C18/18 ,  F04C18/344 ,  F04C29/0035 ,  F04C29/063 ,  F04C29/124 ,  F05C2253/14

Abstract: A fluid working system such as a pump for displacing a working fluid such as hydraulic fluid or a motor using a working fluid is provided. The system may have a positive displacement machine which includes one or more working chamber with displacement means such as a cylinder with a reciprocating piston. There are also two or more fluid ports to allow the working fluid to flow into and out of the working chamber. The working fluid flows from one fluid port means to another either being forced to do so when pumped or moving the piston when functioning as an engine. The fluid working system has associated therewith a non-dead compliance volume of a material such as syntactic foam. This compliance volume acts to smooth any pressure fluctuations within the working fluid system.

公开(公告)号：US20180258928A1

公开(公告)日：2018-09-13

申请号：US15760464

申请日：2016-09-08

Applicant: KYB Corporation

Inventor： Tomoyuki NAKAGAWA ,  Masamichi SUGIHARA ,  Yoshiyuki MAKI

IPC: F04C2/344 ,  F04C15/00 ,  F04C18/067

CPC classification number: F04C2/344 ,  F04C15/00 ,  F04C15/0057 ,  F04C18/067

Abstract: A cartridge vane pump includes a head pin that penetrates through a cover, a cover-side side plate and a cam ring that are fixed to an adapter. The head pin has a shaft portion that is fixed to the adapter at a tip end thereof, and a restricting portion that has a diameter larger than that of the shaft portion and being formed on a base end of the shaft portion. The cam ring, the cover, the cover-side side plate and a body-side side plate are held between the restricting portion and the adapter.

公开(公告)号：US20180230870A1

公开(公告)日：2018-08-16

申请号：US15430025

申请日：2017-02-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Georg ZWICKLER ,  Bryan K. PRYOR ,  Georg HEDRICH

IPC: F01M1/02 ,  F04C2/344 ,  F04C13/00 ,  F04C14/22 ,  F01M11/00

CPC classification number: F01M1/02 ,  F01M11/0004 ,  F01M2001/0238 ,  F01M2001/0246 ,  F01M2011/0079 ,  F04C2/332 ,  F04C2/344 ,  F04C2/3442 ,  F04C13/001 ,  F04C14/22 ,  F04C14/226 ,  F04C2240/40 ,  F04C2240/811 ,  F16N13/20

Abstract: A variable displacement vane pump with electronic oil pressure control provides efficient pumping of engine oil precise regulation of engine oil pressure. The variable displacement oil pump includes a rotor supported in a housing for rotation about an axis of rotation and a slide ring movably supported in the housing. A plurality of vanes extends between the rotor and the slide ring to define a plurality of variable displacement pumping chambers. An electronic drive mechanism is configured to position the slide ring with respect to the axis of rotation, and a controller is configured to drive the electronic drive mechanism for selectively positioning the slide ring to adjust an eccentricity of the slide ring relative to the axis of rotation such that the displacement of the pumping chambers is varied.

公开(公告)号：US20180172636A1

公开(公告)日：2018-06-21

申请号：US15380401

申请日：2016-12-15

Applicant: CATERPILLAR INC.

Inventor： Kristopher Eric Shaffer

IPC: G01N27/74 ,  G01N33/28 ,  F01M1/02 ,  F01M11/10 ,  F04C2/14 ,  F04C2/344

CPC classification number: G01N27/74 ,  F01M1/02 ,  F01M11/10 ,  F01M2001/0238 ,  F01M2011/144 ,  F04C2/14 ,  F04C2/344 ,  F04C18/084 ,  F04C18/18 ,  F04C18/344 ,  F04C28/28 ,  F04C2240/30 ,  F04C2240/81 ,  G01N33/2888

Abstract: A system for monitoring machine fluids is provided. The system includes a fluid handling unit configured to pump the fluid and the fluid handling unit includes at least one fluid handling element. A magnetic material on the at least one fluid handling element is configured to generate a magnetic field. A sensing element located within the magnetic field is configured to measure fluctuations in the magnetic field.

公开(公告)号：US20180149153A1

公开(公告)日：2018-05-31

申请号：US15578437

申请日：2016-06-01

Applicant: KYB Corporation

Inventor： Koichiro AKATSUKA ,  Tomoyuki FUJITA ,  Tomoyuki NAKAGAWA ,  Fumiyasu KATOU ,  Hiroki GOMI

IPC: F04C2/344 ,  F04C11/00 ,  F04C14/26 ,  F04C15/06

CPC classification number: F04C2/344 ,  F01C21/0863 ,  F01C21/108 ,  F04C2/3446 ,  F04C11/00 ,  F04C11/001 ,  F04C14/02 ,  F04C14/26 ,  F04C15/0049 ,  F04C15/06 ,  F04C2270/12 ,  F04C2270/13

Abstract: A pump device includes: a main pump and a sub pump; and a switching valve that switches so as to supply the hydraulic oil discharged from the sub pump to the hydraulic device, or to return the hydraulic oil discharged from the sub pump to the suction side. The main pump and the sub pump each include: a rotor, a discharge port into which the hydraulic oil discharged from a pump chamber is led, and a groove-shaped discharge-side notch formed from an opening edge of the discharge port toward a direction opposite to a rotation direction of the rotor. The switching valve switches according to a rotation speed of the drive shaft. At least one discharge-side notch of the sub pump is formed so that a resistance applied to the flow of the hydraulic oil passing therethrough is greater than that of the discharge-side notch of the main pump.

公开(公告)号：US09964108B2

公开(公告)日：2018-05-08

申请号：US15531409

申请日：2015-12-03

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe Lo Biundo ,  Alessandra De Rango

IPC: F03C4/00 ,  F04C2/00 ,  F04C14/18 ,  F04C14/22 ,  F04C2/344 ,  F04C15/00 ,  F01C21/10

CPC classification number: F04C14/22 ,  F01C21/106 ,  F04C2/344 ,  F04C14/226 ,  F04C15/0003 ,  F04C2210/206 ,  F04C2240/10 ,  F04C2240/30

Abstract: A variable displacement oil pump is described. The oil pump has a pump body connected to an intake channel and to a delivery channel, a rotor capable of rotating inside the pump body about a rotation axis and provided with a plurality of vanes. The oil pump has an oscillating stator arranged in an eccentric position around the rotor and pivoted inside the pump body at a rotation pin. The oil pump has adjustment means for adjusting the displacement of the oil pump which acts on the oscillating stator to displace it with respect to the rotor and position it in at least one predetermined operative position. The adjustment means has first thrusting means configured to exert a first thrusting action on a first outer surface portion of the oscillating stator arranged on a substantially opposite side with respect to the rotation pin taking as a reference the rotor.

公开(公告)号：US09863417B2

公开(公告)日：2018-01-09

申请号：US14489094

申请日：2014-09-17

Applicant: HITACHI AUTOMOTIVE SYSTEMS STEERING, LTD.

Inventor： Norikazu Kumasaka ,  Masaaki Iijima ,  Yukio Uchida ,  Satoshi Muramatsu

IPC: F04C14/22 ,  F04C14/26 ,  F01C21/08 ,  F04C2/344 ,  F04C15/06 ,  F01C21/10

CPC classification number: F04C14/226 ,  F01C21/0863 ,  F01C21/108 ,  F04C2/344 ,  F04C2/3442 ,  F04C2/3446 ,  F04C14/223 ,  F04C14/26 ,  F04C15/06 ,  F04C2240/811

Abstract: A variable displacement vane pump is provided. This pump includes a pump housing including, a driving shaft, a rotor, a plurality of vanes, a cam support surface, a cam ring, an intake port formed at the pump housing, a discharge port formed at the pump housing, and a cam ring control mechanism disposed at the pump housing and configured to control an eccentric amount of the cam ring with respect to the rotor. The cam support surface is formed in such a manner that a shortest distance between the cam support surface and a reference line decreases from a second confining region side toward a first confining region side, and the cam ring is formed in such a manner that a cam profile radius change rate decreases first and then increases again on the second confining region side when eccentric amount of the cam ring is maximized.

公开(公告)号：US20180003059A1

公开(公告)日：2018-01-04

申请号：US15198951

申请日：2016-06-30

Applicant: AIRBOSS AIR TOOL CO., LTD.

Inventor： Hsin-He CHANG

IPC: F01C21/08 ,  B25F5/00

CPC classification number: F01C21/0836 ,  B25F5/00 ,  F01C1/3442 ,  F01C21/0809 ,  F04C2/344 ,  F04C2240/20 ,  F04C2250/20 ,  F05B2220/00 ,  F05B2240/2023

Abstract: A pneumatic motor has a housing, an axle, and multiple blades. The axle is rotatably mounted in the housing and has multiple blade recesses. The blades are mounted respectively and moveably in the blade recesses. Each blade has an inner side edge. The inner side edge is mounted in a corresponding one of the blade recesses. The inner side edge of each one of at least half of the multiple blades has a straight segment and a rectangular tab. Each one of the blade recesses which holds the blade having the straight segment and the rectangular tab has a bottom having a straight segment and a tab hole.

公开(公告)号：US20170328365A1

公开(公告)日：2017-11-16

申请号：US15531409

申请日：2015-12-03

Applicant: O.M.P. OFFICINE MAZZOCCO PAGNONI S.R.L.

Inventor： Giuseppe LO BIUNDO ,  Alessandra DE RANGO

IPC: F04C14/22 ,  F04C15/00 ,  F01C21/10 ,  F04C2/344

CPC classification number: F04C14/22 ,  F01C21/106 ,  F04C2/344 ,  F04C14/226 ,  F04C15/0003 ,  F04C2210/206 ,  F04C2240/10 ,  F04C2240/30

Abstract: A variable displacement oil pump is described. The oil pump has pump body connected to an intake channel and to a delivery channel, a rotor capable of rotating inside the pump body about a rotation axis and provided with a plurality of vanes. The oil pump has an oscillating stator arranged in an eccentric position around the rotor and pivoted inside the pump body at a rotation pin. The oil pump has adjustment means for adjusting the displacement of the oil pump which acts on the oscillating stator to displace it with respect to the rotor and position it in at least one predetermined operative position. The adjustment means has first thrusting means configured to exert a first thrusting action on a first outer surface portion of the oscillating stator arranged on a substantially opposite side with respect to the rotation pin taking as a reference the rotor.