Invention Application
- Patent Title: HIGH-FLOW ELECTRO-HYDRAULIC ACTUATOR
- Patent Title (中): 高流量电动液压执行器
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Application No.: PCT/US2012/053154Application Date: 2012-08-30
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Publication No.: WO2013036432A1Publication Date: 2013-03-14
- Inventor: GREEB, Kevin E. , LAFLEUR, Philip A. , WORKMAN, Jonathan P. , BEEN, John J.
- Applicant: WOODWARD, INC. , GREEB, Kevin E. , LAFLEUR, Philip A. , WORKMAN, Jonathan P. , BEEN, John J.
- Applicant Address: 1000 East Drake Road P.O. Box 1519 Fort Collins, Colorado 80525 US
- Assignee: WOODWARD, INC.,GREEB, Kevin E.,LAFLEUR, Philip A.,WORKMAN, Jonathan P.,BEEN, John J.
- Current Assignee: WOODWARD, INC.,GREEB, Kevin E.,LAFLEUR, Philip A.,WORKMAN, Jonathan P.,BEEN, John J.
- Current Assignee Address: 1000 East Drake Road P.O. Box 1519 Fort Collins, Colorado 80525 US
- Agency: BAIMA, Michael J.
- Priority: US61/532,922 20110909; US13/597,450 20120829
- Main IPC: F15B13/04
- IPC: F15B13/04 ; F15B13/044
Abstract:
Embodiments of the invention provide a high-reliability, cost-effective electro- hydraulic servo-valve assembly that is not susceptible to failure caused by contaminated fluid. In particular embodiments, the electro-hydraulic servo-valve assembly includes a rotary valve (22) that may be actuated by either a direct-coupled Limited Angle Torque (LAT) motor, a geared, brushless DC motor, or some other rotary electric actuating element (32) with an integrated driver circuit. In particular embodiments, the rotary valve element made up of an outer sleeve element (24) and an inner spool element (26), with matching ports and slots (30), respectively.
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