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91.发明申请公开(公告)号：US20190093682A1
公开(公告)日：2019-03-28
申请号：US15718960
申请日：2017-09-28
发明人： Michael R. Fontaine , David L. Smid
CPC分类号： F15B15/20 , F15B15/14 , F15B21/087 , F15B2211/6313 , F15B2211/6336 , F15B2211/665 , F15B2211/6653 , F15B2211/6656 , F15B2211/7053 , F15B2211/8855 , G05B19/44
摘要： Systems and methods may be provided to digitally control both position and crossover pressure in a double-acting pneumatic actuator, in view of constraints (e.g., a deadband range comprising a set point) set on the crossover pressure. Control may be achieved, via a control algorithm (e.g., a Multiple Input Multiple Output (MIMO) control algorithm) acting upon inputs of actuator position feedback and crossover pressure feedback (e.g., as indicated by pressure feedback of each respective pneumatic chamber). Further, the embodiments described herein may reduce the necessary frequency of control actions for adjusting crossover pressure, thus reducing wear on process components, and allowing for finer control of actuator position.
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公开(公告)号：US10202158B2
公开(公告)日：2019-02-12
申请号：US15688897
申请日：2017-08-29
发明人： Shu-Yu Jhou , Che-Wei Hsu
摘要： An adjustable seat tube structure which is for adjusting a height of a saddle for a bicycle includes a lower tube, an upper tube and a piston set. The lower tube includes a top end. The upper tube is disposed at the lower tube and is limitedly moved relative to the lower tube. The upper tube is linked with the saddle and includes an upper end, an inner space, and a lower end. The upper end is protruded out of the top end, and the inner space is for receiving a gas. The lower end is corresponded to the upper end. The piston set includes a piston, a valve and a rod. The piston is disposed inside the inner space, and the lower end is moved relative to the piston. The valve is disposed inside the piston and the rod is connected to the piston.
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公开(公告)号：US10197076B2
公开(公告)日：2019-02-05
申请号：US15235560
申请日：2016-08-12
摘要： A pneumatic volume booster to amplify a control pressure output signal can include a pneumatic control outlet for attachment to a pneumatic working chamber of the pneumatic actuator; a pneumatic aeration inlet configured to receive the pneumatic control pressure signal from the position controller, a pneumatic amplification inlet configured to receive a constant pneumatic air amplification signal, a pneumatic de-aeration connection from the control outlet to a pressure sink configured to aerate the control actuator, a deaerator seat-valve separating and/or opening the pneumatic de-aeration connection, a pneumatic aeration connection between the first aeration inlet and the control outlet; an aerator seat-valve separating and/or opening the pneumatic aeration connection, a pneumatic amplification connection between the amplification inlet and the control outlet; an amplification seat-valve separating and/or opening the pneumatic amplification connection; and a mechanical seat-valve-operator for commonly operating the de-aeration seat-valve, the first aerator seat-valve and the amplification seat-valve.
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公开(公告)号：US10184562B2
公开(公告)日：2019-01-22
申请号：US15314548
申请日：2015-06-02
发明人： Matthew Monroe Kuhns
IPC分类号： F15B15/20 , F16J1/04 , F15B15/14 , F04B53/00 , F04B53/16 , F04B53/22 , F16J10/02 , F16H25/00 , F04B53/14 , F16H25/20 , F16J1/00 , F16K31/04 , F16K31/50
摘要： A device includes an outer cylinder having a cylinder inner wall and a cylinder outer wall and at least one magnet disposed on or between the cylinder inner wall and the cylinder outer wall and a piston having a piston inner wall and a piston outer wall and at least one magnet disposed on or between the piston outer wall and the piston inner wall. In one embodiment, the piston is rotatable within the cylinder and slidably movable along an axis respective to the cylinder. The piston is also disposed within the cylinder such that the at least one magnet disposed on or between the cylinder inner wall and the cylinder outer wall is aligned with the at least one magnet disposed on or between the piston outer wall and the piston inner wall, substantially preventing the piston from rotating relative to the cylinder.
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公开(公告)号：US20180371987A1
公开(公告)日：2018-12-27
申请号：US16016923
申请日：2018-06-25
申请人： ECO Holding 1 GmbH
发明人： Alexander Mudra , Wolfgang Rupp
CPC分类号： F02B75/045 , F15B15/202 , F16K11/0716 , F16K31/363
摘要： A switch valve for controlling a hydraulic fluid flow of a connecting rod for an internal combustion engine with variable compression with an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber; a second cylinder including a second hydraulic chamber, wherein the first cylinder includes a first inlet for feeding hydraulic fluid into the first cylinder from a supply and the second cylinder includes a second inlet for feeding hydraulic fluid into the second cylinder from the supply, wherein the first cylinder includes a first drain for draining the hydraulic fluid from the first cylinder and the second cylinder includes a second drain for draining the hydraulic fluid from the second cylinder, wherein the switch valve includes a step piston which is displaceable into a first switching position or a second switching position,
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公开(公告)号：US10132336B1
公开(公告)日：2018-11-20
申请号：US13867329
申请日：2013-04-22
申请人： Daniel Theobald
发明人： Daniel Theobald
IPC分类号： F15B15/20
摘要： A method and apparatus for controlling torsional rotation and/or stiffness of a member by the use of artificial style activation elements.
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公开(公告)号：US20180252245A1
公开(公告)日：2018-09-06
申请号：US15759351
申请日：2016-09-06
摘要： An underwater actuator includes: a housing to be immersed under water; a cylinder chamber formed in the housing; a piston accommodated in the cylinder chamber so the piston is movable in a sliding manner in the cylinder chamber, the piston dividing the cylinder chamber into a first and a second pressure receiving chambers; a rod extending from the piston to the first pressure receiving chamber side, the rod penetrating the housing; a release chamber formed in the housing, having an internal pressure kept lower than a water pressure outside of the housing; and a switching mechanism including: a first switcher configured to switch a communication state between the second pressure receiving chamber and the outside of the housing to allow or block communication therebetween; and a second switcher configured to switch a communication state between the second pressure receiving chamber and the release chamber to allow or block communication therebetween.
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公开(公告)号：US20180252241A1
公开(公告)日：2018-09-06
申请号：US15909076
申请日：2018-03-01
申请人： PistonPower ApS
CPC分类号： F15B3/00 , F04B7/0225 , F04B9/1056 , F04B9/113 , F04B2201/0808 , F04B2205/065 , F04B2205/16 , F15B15/202 , F15B2215/30
摘要： A hydraulic pressure intensifier (1) is described comprising a housing (2) having a low pressure chamber (3) and a high pressure chamber (4), force transmitting means (5) between the low pressure chamber (3) and the high pressure chamber (4), and a switching valve (8) connecting the low pressure chamber (3) to a first pressure or to a second pressure different from the first pressure. It is intended to have a large volume on the high pressure side of the pressure intensifier. To this end the switching valve (8) is controlled by a pilot valve 18.
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公开(公告)号：US20180252213A1
公开(公告)日：2018-09-06
申请号：US15756928
申请日：2016-09-01
申请人： Project Phoenix, LLC
发明人： Thomas Afshari
CPC分类号： F04C11/003 , F04C11/00 , F04C15/00 , F04C15/0092 , F04C15/0096 , F15B15/18 , F15B15/202
摘要： A fluid-driven actuator system includes a fluid-driven actuator and at least one proportional control valve and at least one pump connected to the fluid-driven actuator to provide fluid to operate the fluid-driven actuator. The at least one pump includes at least one fluid driver having a prime mover and a fluid displacement assembly to be driven by the prime mover such that fluid is transferred from the pump inlet to the pump outlet. The fluid-driven actuator system also includes a controller that establishes at least one of a speed and a torque of the at least one prime mover to adjust at least one of a flow in the fluid-driven system to a flow set point and a pressure in the fluid-driven actuator system to a pressure set point and concurrently establishes an opening of the at least one proportional control valve to adjust at least one of the flow to the flow set point and the pressure to the pressure set point.
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公开(公告)号：US10018191B2
公开(公告)日：2018-07-10
申请号：US14649955
申请日：2013-12-25
申请人： KOSMEK LTD
发明人： Hideaki Yokota , Keitaro Yonezawa
CPC分类号： F04B39/08 , B25B5/06 , F04B37/00 , F04B39/1013 , F04B39/121 , F15B15/204 , F15B15/2807
摘要： Apparatus configuration in which: a piston (10) is inserted into a housing (1) ascendably and descendably; and pressurized oil supplied to and discharged from a driving chamber (11) arranged above the piston (10). An output rod (15) inserted into an upper wall (2) of the housing (1) protrudes upward from the piston (10). A descent-detecting first detection valve (31) and an ascent-detecting second detection valve (32) arranged outside the periphery of the output rod (15) and in the upper wall (2), circumferentially spaced apart at a predetermined interval. Each first detection valve (31) and second detection valve (32) has an operated portion (49) (79) which faces the piston (10) from above. The apparatus is configured so that pressurized air for detection is supplied through a first supply passage (B1) and a second supply passage (B2) inlets (31a) (32a) of the first detection valve (31) and the second detection valve (32), respectively.
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