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公开(公告)号：US20170253318A1
公开(公告)日：2017-09-07
申请号：US15059494
申请日：2016-03-03
申请人： Woodward, Inc.
CPC分类号： F16K31/426 , B64C13/42 , B64F5/60 , F15B18/00 , F15B19/005 , F15B2013/0409 , F15B2211/6336 , F15B2211/8757 , F16K11/07
摘要： A redundant control system for a vehicle includes: one or more actuator housings; a plurality of actuator pistons coupled to the actuator housings, each of the actuator pistons mechanically coupled to one another and a common output device; a plurality of primary stages coupled to the actuator housings, each of the primary stages operatively coupled to move a respective actuator piston relative to at least one of the actuator housings, and each of the primary stages functioning independent of any other primary stage when the control system is operating in a flight-operation mode; and an auxiliary stage operatively coupled to move a first of the plurality of actuator pistons relative to at least one of the actuator housings when the control system is operating in a ground-operation mode, with each of the plurality of primary stages being responsive to movement of the first actuator piston by the auxiliary stage.
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公开(公告)号：US20140260956A1
公开(公告)日：2014-09-18
申请号：US13827223
申请日：2013-03-14
申请人： WOODWARD, INC.
发明人： Mark Williams
IPC分类号： F16J1/04
CPC分类号： F16J1/04 , F15B15/1452 , F15B15/149 , F16J15/48
摘要： Methods, apparatuses, and systems for circumferential sealing of piston assembly in a piston actuator. A piston assembly for a piston actuator includes a piston including an extending surface, a retracting surface, and a circumferential surface that connects the extending surface and the retracting surface. The piston is adapted to engage and seal against an interior surface of a cylinder bore of an actuator. The piston assembly includes a first unidirectional passage connecting the extending surface and the circumferential surface. The first unidirectional passage allows hydraulic fluid to flow unidirectionally from the extending surface to the circumferential surface through the piston to energize a circumferential seal disposed on a seal groove in the circumferential surface during an extension stroke of the piston
摘要翻译： 用于活塞致动器中的活塞组件的周向密封的方法，装置和系统。 用于活塞致动器的活塞组件包括活塞，活塞包括延伸表面，回缩表面和连接延伸表面和回缩表面的周向表面。 活塞适于与致动器的气缸孔的内表面接合并密封。 活塞组件包括连接延伸表面和圆周表面的第一单向通道。 第一单向通道允许液压流体通过活塞从延伸表面单向流动到圆周表面，以在活塞的延伸行程期间激励设置在圆周表面中的密封槽上的周向密封件
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公开(公告)号：US20210207735A1
公开(公告)日：2021-07-08
申请号：US17208632
申请日：2021-03-22
申请人： Woodward, Inc.
摘要： Embodiments of the disclosure include a redundant control system for a vehicle. The redundant control system includes first and second actuator pistons mechanically coupled to one another and disposed in respective first and second fluid chambers. The first and second actuator pistons are movable by first and second primary stages. One of the primary stages includes a bypass valve with a pilot valve actuatable in response to movement of the first actuator piston.
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公开(公告)号：US10969035B2
公开(公告)日：2021-04-06
申请号：US15059494
申请日：2016-03-03
申请人： Woodward, Inc.
摘要： Embodiments of the disclosure include a redundant control system for a vehicle. The redundant control system includes first and second actuator pistons mechanically coupled to one another and disposed in respective first and second fluid chambers. The first and second actuator pistons are movable by first and second primary stages. One of the primary stages includes a bypass valve with a pilot valve actuatable in response to movement of the first actuator piston.
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