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특허 상세정보

Local backup hydraulic actuator for aircraft control systems

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-031/02   
미국특허분류(USC) 060/405; 060/430; 060/468
출원번호 US-0761841 (2010-04-16)
등록번호 US-8434301 (2013-05-07)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Seed IP Law Group PLLC
인용정보 피인용 횟수 : 3  인용 특허 : 25
초록

A backup system is provided that has a local electric motor and pump for some or all of hydraulic actuators. A local backup hydraulic actuator has two power sources, hydraulic as primary and electrical as backup. During normal operation, the hydraulic actuator receives pressurized fluid from a hydraulic system and the fluid flow to the chambers is controlled by a servo valve. If the hydraulic system fails, the electronic controller detects the failure by observing the signal indicative of the pressure from the pressure sensor, and the controller powers t...

대표
청구항

1. A hydraulic control system comprising: a hydraulic actuator having a cylinder and piston assembly;first and second fluid lines coupled to the hydraulic actuator;a high pressure fluid line;a low pressure fluid line;a central pressure source coupled to the high pressure fluid line to place high pressure on the first and second fluid lines;a servo valve positioned between the central pressure source and the hydraulic actuator and being controllable to selectively connect the first and second fluid lines to the high pressure fluid line and the low pressur...

이 특허에 인용된 특허 (25)

  1. Jones, Kelly T.. Aircraft control surface drive system and associated methods. USP2004106799739.
  2. Krantz, Richard M.. Augmenting flight control surface actuation system and method. USP2004026685138.
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  4. Cartmell Daniel H. ; Borgens David B. ; Buus Henning ; Duffy Keith S. ; Gast Mark E. ; Huynh Neal V. ; Lochtie David W. ; Piersbacher Clifton A.. Autopilot automatic disconnect system for fly-by-wire aircraft. USP1999025868359.
  5. Ho,Yuhang. Electro-hydraulic actuator system. USP2007037191593.
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  10. Hamrick Joseph T. (Roanoke VA) Rose Leslie C. (Rocky Mount VA). Heat pump operated by wind or other power means. USP1981124304103.
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