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公开(公告)号：US11686410B2
公开(公告)日：2023-06-27
申请号：US16955807
申请日：2018-12-20
发明人： Recep Muco , Muslum Eren , Volkan Karayazi , Tekin Coskun , Ozgur Caliskan
CPC分类号： F16L11/088 , B61C17/00 , C08L31/04 , F16L11/081 , F16L11/12 , F16L59/143 , F16L59/153 , C08L2201/08 , C08L2205/025
摘要： A rubber composition for a cover layer of a hydraulic hose includes: ethylene vinyl acetate copolymer (EVA); and ethylene-propylene-diene terpolymer (EPDM). In an embodiment, the composition includes ethylene vinyl acetate copolymer (EVA) and ethylene-propylene-diene terpolymer (EPDM) and additives. The additives may include carbon black with a content of around 15 phr, silica with a content of around 20 phr, di-octyl adipate with a content of around 18 phr, aluminium hydroxide with a content of around 124 phr, magnesium hydroxide with a content of around 30 phr, and other chemicals with a content of around 20 phr. The other chemicals may include zinc oxide, peroxide curative, antioxidant, coagents and processing aids.
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公开(公告)号：US20230041899A1
公开(公告)日：2023-02-09
申请号：US17855378
申请日：2022-06-30
发明人： Anil Balasaheb KHARPAS , Avinash Dadaso PATIL , Sanjay Dhondappa MALI , Amit Ranjit PANCHAL , Robert Leslie ISAACS
IPC分类号： F04B1/324 , F15B13/044 , G05D16/20 , F15B13/16 , F04B49/00 , F15B13/04 , F04B49/08 , F15B13/02
摘要： A pump control assembly for controlling a variable displacement hydraulic pump includes a spool mounted within a valve block. The spool is configured to move between a first and a second position within the valve block so as to selectively control the displacement of the attached pump. The pump control assembly further includes first and second chambers that each apply a force to opposite ends of the spool. The first chamber is positioned at a first end of the spool in fluid communication with a pump output port. The second chamber is positioned at a second end of the spool and in fluid communication with a hydraulic tank port and a proportional pressure reducing valve. The second chamber also includes a piston and first and second springs positioned on either side of the piston. The proportional pressure reducing valve provides a regulated pressure to a first side of the piston along with the first spring, and the hydraulic tank port provides a tank pressure on the opposite side of the piston along with the second spring. The pump control assembly also includes a stop structure having a positive stop that limits movement of the piston in a direction toward the first chamber.
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公开(公告)号：US11536265B2
公开(公告)日：2022-12-27
申请号：US17089095
申请日：2020-11-04
IPC分类号： F04B49/12 , F04B1/324 , F04B49/00 , F04B49/22 , F04B49/08 , F04B1/2078 , F04B1/2085 , F04B1/124 , F04B1/146 , F04B1/295
摘要： The present invention relates to a hydraulic pump system including a variable displacement pump that generates an outlet pressure. The hydraulic pump system also includes a control system that decreases a displacement volume of the variable displacement pump in response to an increase in the outlet pressure and increases a displacement volume of the variable displacement pump in response to a decrease in the outlet pressure.
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公开(公告)号：US11506726B2
公开(公告)日：2022-11-22
申请号：US16557656
申请日：2019-08-30
发明人： Mayura Arun Madane , Nilesh Surase , Arjun Tr , Amogh Kank
摘要： A system and method for detecting the location of coil open and coil short faults. The method includes obtaining an instantaneous admittance signature of each solenoid coil, sending out a periodic test signal to each valve, obtaining a new admittance signature; and calculating the coil-open and coil-short faults.
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公开(公告)号：US20220316628A1
公开(公告)日：2022-10-06
申请号：US17639155
申请日：2020-08-24
发明人： Dipak SINGH , Nivedita SINGH , Kubra YILMAZ
摘要： Described is a hose and a method of manufacturing a hose. The hose comprises: an inner tube for communicating fluid; a reinforcement layer positioned over the inner tube; an intermediate cover positioned over the reinforcement layer, wherein the intermediate cover has a thickness of between 1.3 mm and 3.0 mm and comprises a material having a hardness of between 40 Shore A and 60 Shore A; and an outer cover comprising an abrasion resistant material.
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公开(公告)号：US11441693B2
公开(公告)日：2022-09-13
申请号：US16444479
申请日：2019-06-18
发明人： Tam Chi Huynh
摘要： A manual override assembly for a hydraulic power source operates to override an actuator of a hydraulic power source. The assembly includes a lever arm and connecting rods. The lever arm pivotally moves relative to a valve body of the hydraulic power source. The lever arm is connected to valve spools via the connecting rods, respectively. Each spool has a bore with an off-set opening for inserting one end of the connecting rod.
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公开(公告)号：US20220228580A1
公开(公告)日：2022-07-21
申请号：US17613971
申请日：2020-06-26
IPC分类号： F04B1/303 , F04B19/22 , F04B1/2035
摘要： A valve plate for a fluid pump includes a body having a first surface and an oppositely disposed second surface. The body defines a first kidney slot that extends through the first and second surfaces and a second kidney slot that extends through the first and second surfaces. A first notch is disposed in the first surface of the body and extends outwardly from the first kidney slot in a direction toward the second kidney slot. A second notch is disposed in the first surface and extends outwardly from the first kidney slot in a direction toward the second kidney slot. The second notch is separated from the first notch.
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公开(公告)号：US11378068B2
公开(公告)日：2022-07-05
申请号：US16927316
申请日：2020-07-13
发明人： Anil Balasaheb Kharpas , Avinash Dadaso Patil , Sanjay Dhondappa Mali , Amit Ranjit Panchal , Robert Leslie Isaacs
IPC分类号： F04B1/324 , F15B13/16 , F15B13/044 , G05D16/20 , F04B49/00 , F15B13/04 , F04B49/08 , F15B13/02
摘要： A pump control assembly for controlling a variable displacement hydraulic pump includes a spool mounted within a valve block. The spool is configured to move between a first and a second position within the valve block so as to selectively control the displacement of the attached pump. The pump control assembly further includes first and second chambers that each apply a force to opposite ends of the spool. The first chamber is positioned at a first end of the spool in fluid communication with a pump output port. The second chamber is positioned at a second end of the spool and in fluid communication with a hydraulic tank port and a proportional pressure reducing valve. The second chamber also includes a piston and first and second springs positioned on either side of the piston. The proportional pressure reducing valve provides a regulated pressure to a first side of the piston along with the first spring, and the hydraulic tank port provides a tank pressure on the opposite side of the piston along with the second spring. The pump control assembly also includes a stop structure having a positive stop that limits movement of the piston in a direction toward the first chamber.
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公开(公告)号：US20220196194A1
公开(公告)日：2022-06-23
申请号：US17600802
申请日：2020-03-24
发明人： Sebastian Lafond , Atul Puranik , Vijay Surve
IPC分类号： F16L37/56 , F16L37/20 , F16L37/18 , H01R13/518 , H01R13/629 , H01R13/631
摘要： The invention relates to a coupling device for simultaneously coupling and decoupling a number of coupling pairs, which coupling device includes:—a number of coupling pairs, each having a first coupling part and a second coupling part;—a first mounting frame on which the first coupling parts of the number of coupling pairs are arranged;—a second mounting frame arranged parallel to the first mounting frame, wherein the second coupling parts of the number of coupling pairs are arranged to the second mounting frame, and wherein the second mounting frame is movable towards to and away from the first mounting frame between a connected position, in which each first coupling part is connected with the corresponding second coupling part, and a disconnected position;—guiding mechanism arranged to the first mounting frame and the second mounting frame for guiding the movement between the connected and disconnected position;—at least one rack and pinion drive arranged between the first and second mounting frame, wherein the pinion is arranged on a shaft rotatable arranged in the first mounting frame and wherein the rack extends from the second mounting frame in the direction of movement of said second mounting frame into the first mounting frame along the pinion; wherein the shaft extends with at least one end out of the first mounting frame and wherein an operating lever is arranged on the shaft.
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公开(公告)号：US20220136534A1
公开(公告)日：2022-05-05
申请号：US17574050
申请日：2022-01-12
IPC分类号： F15B21/08 , F16H3/44 , F16H3/72 , F15B11/16 , E02F9/22 , H02K7/108 , H02K7/116 , H02K11/00 , F16H47/04
摘要： A variator includes an epicyclic gear set that has at least three nodes. The variator includes a pumping unit connected to a first node of the epicyclic gear set. The variator includes a clutch connected to a second node of the epicyclic gear set. The clutch is selectively movable between three positions. When in the first position, the clutch allows the second node to freewheel. When in the second position, the clutch connects the second node to a fixed surface. When in the third position, the clutch connects the second node to an electric motor. The variator includes a receiver connected to the third node of the epicyclical gear set. The receiver is configured to receive a drive shaft.
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