Invention Grant
- Patent Title: Direct drive servovalve having redundant drive motors
- Patent Title (中): 具有冗余驱动电机的直接驱动伺服阀
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Application No.: US13383972Application Date: 2010-07-14
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Publication No.: US08925586B2Publication Date: 2015-01-06
- Inventor: John Lauffer
- Applicant: John Lauffer
- Applicant Address: US CA Santa Clara
- Assignee: Woodward HRT, Inc.
- Current Assignee: Woodward HRT, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: BainwoodHuang
- International Application: PCT/US2010/041956 WO 20100714
- International Announcement: WO2011/008844 WO 20110120
- Main IPC: F16K31/04
- IPC: F16K31/04

Abstract:
A direct drive servovalve (10) includes redundant drive motors (14) coupled to a common valve drive shaft (22,24) by a connection device (26). The connection device (26) is configured to allow operation of the servovalve (10) in the case where one or more of the drive motors (14) becomes inoperable, such as caused by jamming or binding of a rotor associated with the drive motor. By use of the connection device (26), in the event that one of the drive motors (14) was to become jammed, the remaining operable motors (14) can continue to stroke or cause translation of a valve member (18) of the direct drive servovalve (10) to allow its continued operation.
Public/Granted literature
- US20120112109A1 DIRECT DRIVE SERVOVALVE HAVING REDUNDANT DRIVE MOTORS Public/Granted day:2012-05-10
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