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公开(公告)号：US11028845B2
公开(公告)日：2021-06-08
申请号：US16321964
申请日：2016-09-13
Applicant: Halliburton Energy Services, Inc.
Inventor： Joseph A. Beisel
Abstract: A monitoring system for a plurality of pressure pumps may include, for each pump, a strain gauge, a position sensor and a pressure transducer. A strain gauge may be positionable on each pump to generate a strain measurement corresponding to strain in each pump. A position sensor may be positionable on each pump to generate a position measurement corresponding to a position of a rotating member corresponding of each pump. A pressure transducer is positionable on each pump to generate a boost pressure measurement that is usable with the strain measurement and the position measurement to determine a cavitation threshold for each pump.
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32.发明申请公开(公告)号：US20210164502A1
公开(公告)日：2021-06-03
申请号：US17255587
申请日：2019-06-27
Applicant: STEM NUMERICAL ENGINEERING S.R.L.
Inventor： Mario Antonio MORSELLI
Abstract: The present invention concerns an attenuation device (1) of the fluid flow pulsation along a duct of a hydraulic circuit connected with a hydraulic machine, comprising at least an attenuation module (3) passed through by a pass-through duct (5) configured to be placed in fluid communication with said duct of said hydraulic circuit. In particular, in said attenuation module (3) a first duct (7) is obtained having an opened first end (70) in fluid communication with said pass-through duct (5), and a closed second end, said first duct (7) extending along a curved line comprising a plurality of curved sections, said first duct (7) being adapted to attenuate the pulsation of said fluid flow along said duct of said hydraulic circuit to reduce the vibrations generated by said pulsation of said fluid flow.
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公开(公告)号：US10954966B2
公开(公告)日：2021-03-23
申请号：US15792971
申请日：2017-10-25
Applicant: Raytheon Company
Inventor： Kirk A. Miller
Abstract: An apparatus includes a bootstrap accumulator having multiple fluid expansion volumes each configured to receive fluid. The bootstrap accumulator also includes a piston assembly configured to move within the fluid expansion volumes based on pressures within the fluid expansion volumes. The piston assembly includes (i) a fluid pathway that couples the fluid expansion volumes and (ii) a bypass valve configured to selectively open or block the fluid pathway. The piston assembly could also include multiple pistons and a connecting rod coupling the pistons. The fluid pathway could include a narrower path through a first portion of the connecting rod and a wider path through a second portion of the connecting rod. The bypass valve could include a ball and a spring configured to push the ball to block the narrower path through the first portion of the connecting rod.
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公开(公告)号：US20210030954A1
公开(公告)日：2021-02-04
申请号：US17075146
申请日：2020-10-20
Applicant: OSPREY MEDICAL, INC.
Inventor： William Burmaster , Tuan M. Doan , Rodney L. Houfburg
IPC: A61M5/168 , A61M5/00 , A61M5/14 , A61M5/152 , F04B49/06 , A61M5/142 , A61M5/48 , F04B11/00 , G16H40/63 , G16H20/17
Abstract: A system allows for collection and re-use of a fluid medium derived from diverting at least some of the fluid medium of an injection. The system comprises a sterile container, an injector, a delivery catheter, a flow diverter assembly and a diversion reservoir assembly. The delivery catheter is in communication with a selected site within a patient's body. The flow diverter assembly is disposed in a flow path between the injector and the delivery catheter and is configured to divert at least a portion of a medium of the injection from the flow path. The diversion reservoir assembly has a reservoir chamber fluidly coupled to the flow diverter assembly. The reservoir chamber is configured to receive the diverted portion of the fluid medium to allow re-use by the medium injector of the diverted portion.
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公开(公告)号：US10890166B2
公开(公告)日：2021-01-12
申请号：US16327167
申请日：2017-04-12
Applicant: NIKKISO CO., LTD.
Inventor： Fusao Murakoshi , Hideaki Sato
Abstract: A non-pulsation pump is provided with: a cam mechanism that converts the rotational motion of a shared motor into reciprocal motion having a prescribed phase difference; a plurality of cross heads that make reciprocal motion with a prescribed phase difference through the cam mechanism; and a plurality of reciprocating pumps that are driven with a prescribed phase difference and that include plungers connected to the cross heads, wherein the total discharge flowrate toward a shared discharge pipe is kept constant. This non-pulsation pump includes a preliminary compression step for moving the plungers of the reciprocating pumps to a discharge side by very small amounts before a discharging step but after a suction step, and has a stroke adjustment mechanism for adjusting the effective stroke length of the plunger in the preliminary compression step. Thus, generation of pulsation can be suppressed even when the set pressure changes.
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Patent Agency Ranking
公开(公告)号：US10883490B2
公开(公告)日：2021-01-05
申请号：US15553523
申请日：2016-02-09
Applicant: CONTINENTAL AUTOMOTIVE GmbH
Inventor： Rolf Brück , Peter Bauer , Christian Vorsmann , Jan Hodgson
IPC: F04B49/12 , F04B51/00 , F04B43/02 , F01N3/20 , F04B11/00 , F04B43/14 , F04B49/02 , F04C5/00 , F04B43/12
Abstract: A method for operating a device for dosed supply of a liquid, having a pump to deliver the liquid. The pump has an inlet and an outlet. An eccentric is arranged on the pump housing and a deformable diaphragm is arranged between a pump housing and the eccentric. The deformable diaphragm and the pump housing delimit a delivery path from the inlet to the outlet. The seal can be displaced along the delivery path by movement of the eccentric. A pressure sensor is connected to the outlet of the pump. A liquid is delivered by the pump. A time curve of the pressure at the outlet of the pump is monitored during delivery by the at least one pressure sensor. An angle position of the eccentric of the pump is detected using at least one characteristic feature of the time curve at the outlet.
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公开(公告)号：US10859048B2
公开(公告)日：2020-12-08
申请号：US16068584
申请日：2016-12-19
Applicant: Continental Automotive GmbH
Inventor： Yavuz Kurt , Julian Popov
Abstract: The present disclosure relates to pumps. Various embodiments may include a high-pressure fuel pump with: a low-pressure region with a low-pressure damper for damping pressure pulsations that occur during the operation of the high-pressure fuel pump; a damper capsule contained in the damper volume; and a spiral spring enclosed in the damper volume for imparting a preload force to at least a region of the damper capsule. The low-pressure damper has a damper volume. The damper capsule has a gas volume enclosed between two membranes.
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公开(公告)号：US20200332782A1
公开(公告)日：2020-10-22
申请号：US16917258
申请日：2020-06-30
Applicant: Torvec, Inc.
Inventor： Douglas A. Hemink
Abstract: An axial piston device may be operated as a pump and includes a self-centering rotary valve. The device includes a stationary housing encompassing a shaft and the rotary valve. The rotary valve and the shaft are coupled to each other. Upon rotation, the rotary valve self-centers as a result of elimination of moments and forces within the pump. The inventive pump is a piston device. The valve is within a valve bore, which is a part of a manifold. A shaft is within the manifold and the shaft is attached at its distal end to a planar surface of the rotary valve. The shaft has a first axis of rotation and the rotary valve has a second axis of rotation. During operation of the pump, the first axis is often times offset from the second axis. The pump operates via a swashplate with reciprocating pistons while the housing remains stationary.
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公开(公告)号：US20200224647A1
公开(公告)日：2020-07-16
申请号：US16833767
申请日：2020-03-30
Applicant: Hanon Systems
Inventor： Kanwal Bhatia , Robert C. Trela , Teodor Urdea
Abstract: A suction damping device for a variable displacement compressor includes a rotor rotatably received within a stator disposed in a suction port of the variable displacement compressor. The rotor includes an aperture and the stator includes a pair of opposing openings in selective fluid communication with the aperture of the rotor. An electromagnetic device controls a rotational position of the rotor relative to the stator based on a condition of an electrically controlled valve used to control an angle of inclination of a swashplate of the variable displacement compressor. A changing of the rotational position of the rotor relative to the stator causes a variable overlap to be formed between the aperture of the rotor and the openings of the stator to control a flow of a refrigerant through the suction damping device.
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公开(公告)号：US10648466B2
公开(公告)日：2020-05-12
申请号：US14875752
申请日：2015-10-06
Applicant: Robert Bosch GmbH
Inventor： Oliver Hennig , Patrick Schellnegger , Jens Norberg
IPC: F04B49/22 , B60T17/02 , B60T8/40 , F04B11/00 , F04B1/0404 , F04B39/10 , F04B7/00 , F04B49/03 , F04B7/02 , F04B49/08 , F04B53/10 , F04B53/12
Abstract: A piston pump includes a perforated disk as a throttle, in a central hole of which an outlet valve is arranged and its inner edge is fixed externally on a cylinder sleeve base of the piston pump and an outer edge of which lies with prestress on an annular support. Brake fluid displaced out of the piston pump lifts the perforated disk-shaped throttle off from the annular support, with which a dynamic throttle is formed. A throttle channel which negotiates the annular support in the perforated disk-shaped throttle also enables a throughflow in the case of a throttle lying on the annular support.
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