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公开(公告)号：US4278403A
公开(公告)日：1981-07-14
申请号：US72903
申请日：1979-09-06
Applicant: Jon L. Shafer
Inventor： Jon L. Shafer
CPC classification number: F15B1/033
Abstract: A hydraulic accumulator system comprising an accumulator tank (22) for storing hydraulic fluid supplied by a pump (P) from reservoir (10), the stored fluid being pressurized by gas from gas tank (28), a control tank (35)connected at one end to the fluid supply (10) and at the other end to the gas supply (28), and a piston (36) in said control tank (35) having differential areas exposed to said fluid and said gas, said piston having means (41) for actuating a switch (43) to control said pump (P).
Abstract translation: 一种液压蓄能器系统，包括用于存储由储存器（10）由泵（P）供应的液压流体的储存罐（22），所储存的流体由来自气罐（28）的气体加压，控制箱（35） 一端到流体供应源（10），另一端连接到气体供应源（28），并且在所述控制箱（35）中的活塞（36）具有暴露于所述流体和所述气体的差分区域，所述活塞具有装置 （41），用于致动开关（43）以控制所述泵（P）。
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公开(公告)号：US3023579A
公开(公告)日：1962-03-06
申请号：US7372860
申请日：1960-12-05
Applicant: FORD MOTOR CO
Inventor： BOOKOUT CHARLES C , SATTAVARA SVEN W , TAYLOR PAUL E
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公开(公告)号：US2214816A
公开(公告)日：1940-09-17
申请号：US16697137
申请日：1937-10-02
Applicant: VICKERS INC
Inventor： HARRINGTON FERRIS T
CPC classification number: F15B1/033 , F15B1/24 , F15B2201/205 , F15B2201/312 , F15B2201/413 , F15B2201/4155 , Y10T137/2635 , Y10T137/86043
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公开(公告)号：US20240309890A1
公开(公告)日：2024-09-19
申请号：US18412851
申请日：2024-01-15
Applicant: University of Manitoba
Inventor： Badhushan Chithravelpillai , Gustavo Koury Costa , Zeljko Tomas , Nariman Sepehri
Abstract: A method for storing and reutilizing energy during operation of a hydrostatic actuator (EHA) having a hydraulic cylinder, a first bidirectional pump-motor rotationally coupled to an electric motor, and EHA valving and connections between the first pump-motor and the hydraulic cylinder. During at least one of two motoring quadrants, a hydraulic accumulator is charged using a second pump-motor whose rotation is driven by load-driven motoring of the first bidirectional pump-motor. During at least one of the pumping quadrants, driven rotation is imparted to the second pump-motor using stored energy from the accumulator, and said driven rotation of the second pump-motor is used to augment powered rotation of the first bidirectional pump-motor by the electric motor.
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Patent Agency Ranking
公开(公告)号：US11808289B2
公开(公告)日：2023-11-07
申请号：US17509814
申请日：2021-10-25
Applicant: Deere & Company
Inventor： Michael J. Cliff , Steven R. Fliearman , Benjamin K. Dollins
CPC classification number: F15B3/00 , F15B1/024 , F15B1/033 , F15B1/04 , F15B11/08 , F15B2211/212 , F15B2211/665
Abstract: A hydraulic fluid pressure amplifier system includes a boost cylinder assembly, an energy storage device in fluid communication with the boost cylinder assembly, and a working cylinder assembly. The boost cylinder assembly is configured to selectively receive a plunger member into a boost cylinder, wherein movement of the plunger member received in the boost cylinder compresses a charge fluid within a blind side volume of the boost cylinder from a first fluid pressure to an amplified fluid pressure greater than the first pressure. The working cylinder assembly is selectively operable responsive to receiving a source hydraulic fluid having a nominal fluid pressure less than the amplified fluid pressure for effecting the movement of the plunger member into the boost cylinder. The energy storage device is operable to selectively receive and store a portion of the charge fluid compressed to the amplified fluid pressure.
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公开(公告)号：US11421399B2
公开(公告)日：2022-08-23
申请号：US16670262
申请日：2019-10-31
Applicant: DEERE & COMPANY
Inventor： Aaron R. Kenkel , Michael G. Kean , Mary B. Wigginton , Michael R. Gratton , Grant R. Henn , Todd F. Velde , Joseph R. Keene , Kevin W. Campbell , Dustin T. Staade
Abstract: A load sensitive ride system and method is disclosed for a vehicle with an implement movably attached by a boom cylinder. The system includes a payload weight measuring system that measures payload weight and generates a signal indicative of the payload weight, a ride control circuit that adjusts hydraulic flow to and from the boom cylinder; and a controller that receives the signal indicative of the payload weight, and sends compliance commands to adjust ride control compliance based on the signal indicative of the payload weight. The system can include a tire inflation system that adjusts tire pressure. The controller can send inflation commands to adjust tire pressure based on the signal indicative of the payload weight. The compliance commands can depend on the components and compliance adjustment methods of the ride control circuit.
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公开(公告)号：US20210293256A1
公开(公告)日：2021-09-23
申请号：US16826701
申请日：2020-03-23
Applicant: CNH Industrial America LLC
Inventor： Scott Allen Long , Nathan Brooks
Abstract: A product application system for an agricultural applicator includes a boom assembly including a plurality of boom sections, with each boom section being pivotably coupled to at least one adjacent boom section. The system also includes a common rail product circuit spanning across a length of the boom assembly, a product pump configured to supply an agricultural product through the common rail product circuit, and a plurality of nozzle assemblies provided in association with each of the boom sections. Each nozzle assembly across the plurality of boom sections is individually coupled to the common rail product circuit. In addition, the system includes at least one pressure accumulator provided in fluid communication with the common rail product circuit, with the pressure accumulator(s) being configured to adjust a circuit pressure of the agricultural product within the common rail product circuit in response to pressure deviations from a predetermined pressure range.
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49.发明申请公开(公告)号：US20210293111A1
公开(公告)日：2021-09-23
申请号：US17091842
申请日：2020-11-06
Applicant: Transocean Innovation Labs Ltd.
Inventor： Andrew LEACH , Matthew BOIKE , Stephen FAIRFAX
IPC: E21B33/035 , F04B23/06 , F04B1/12 , F04B11/00 , F04B23/02 , F04B49/08 , F04B49/06 , F04B49/20 , F04B17/03 , E21B33/064 , F15B1/033 , F15B1/04 , F15B11/08
Abstract: Some of the present systems include a hydraulic power storage system having an accumulator configured to supply pressurized hydraulic fluid to a hydraulically actuated device to actuate the hydraulically actuated device and a drain in fluid communication with the accumulator and including a valve that is actuatable to drain hydraulic fluid from the hydraulic power storage system such that an internal pressure of the accumulator is reduced and a flow restrictor configured to reduce a flow rate of hydraulic fluid through the valve, a hydraulic pump configured to pressurize the accumulator, a pressure sensor configured to capture data indicative of the internal pressure of the accumulator, and a processor configured to actuate the hydraulic pump to increase the internal pressure of the accumulator if the internal pressure of the accumulator, as indicated in data captured by the pressure sensor, falls below a threshold pressure.
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公开(公告)号：US20210156250A1
公开(公告)日：2021-05-27
申请号：US16625767
申请日：2018-06-26
Applicant: Suhua LIU
Inventor： Suhua LIU
Abstract: Some embodiments of the disclosure provide an advance and retreat automatic control method based on hydraulic sensing conversion and an advance and retreat automatic control system based on hydraulic sensing conversion, which includes an automatic advance and retreat device based on hydraulic sensing conversion, a motor, an oil cylinder, and/or an electric generator. When the digging motor encountered an overlarge resistance force, a pressure on the digging motor is instantaneously increased and exceeds a setting pressure value, hydraulic oil enters a hydraulic operated directional valve and pushes a valve rod to make the walking motor is reverse and retreat, an ultrahigh pressure state of the digging motor is released to restore to a normal pressure value to make reciprocated impact, the valve rod of the hydraulic operated directional valve is reset, and the walking motor is forwards rotated for advancing.
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