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특허 상세정보

Electro-hydraulic pump displacement control with proportional force feedback

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-031/02   
미국특허분류(USC) 060/446; 060/445
출원번호 US-0301559 (2002-11-21)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Finnegan, Henderson, Farabow, Garrett &
인용정보 피인용 횟수 : 2  인용 특허 : 17
초록

A pump displacement control arrangement uses the inherent swivel torques of a fluid translating device in cooperation with a proportional force feedback to more consistently and precisely control the displacement of the fluid translating device. The subject invention uses a variable displacement control arrangement having an actuator mechanism coupled to a swash plate of the fluid translating device and controlled by a proportional valve arrangement to control the displacement of the fluid translating device. A force feedback mechanism is disposed betwee...

대표
청구항

1. A variable displacement control arrangement, comprising:a variable displacement fluid translating device having a pressure outlet port and a displacement adjusting member; an actuator mechanism connected to the displacement adjusting member and configured to move the displacement adjusting member; a source of pressurized fluid; a proportional valve arrangement in communication with the actuator mechanism and the source of pressurized fluid; the proportional valve arrangement configured to selectively direct the pressurized fluid to the actuator mechan...

이 특허에 인용된 특허 (17)

  1. Nozari Farhad. Aircraft hydraulic pump control system. USP1999025865602.
  2. Hongliu Du ; Noah D. Manring. Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump. USP2002106468046.
  3. Hongliu Du ; Noah D. Manring. Apparatus and method for controlling a discharge pressure of a variable displacement hydraulic pump. USP2002046374722.
  4. Izumi Eiki (Ibaraki JPX) Watanabe Hiroshi (Ibaraki JPX) Aoyagi Yukio (Ibaraki JPX) Honma Kazuo (Ibaraki JPX) Nakajima Kichio (Ibaraki JPX). Circuit pressure control system for hydrostatic power transmission. USP1985044510750.
  5. Wachs Ewald (Illerkirchberg DEX) Wagenseil Ludwig (Vhringen DEX) Reistle Wolfgang (Hrvelsingen DEX). Control device for a hydrostatic drive for at least two actuators. USP1989094864822.
  6. Manring Noah D. (Roland IA). Displacement control for a variable displacement axial piston pump. USP1996105564905.
  7. Raymond Robert E. (Zanesville OH). Hydraulic motor control apparatus. USP1976083976098.
  8. Tsunemi Masahiro (Miki JPX) Kondo Yuji (Akashi JPX) Shimoura Kenichi (Kobe JPX). Hydraulic motor control circuit. USP1991105058383.
  9. Stuhr Hans-Waldemar (Aschaffenburg DEX). Hydrostatic drive systems. USP1985074528814.
  10. Budzich Tadeusz (80 Murwood Dr. Moreland Hills OH 44022). Load responsive system pump controls. USP1979024139987.
  11. Schimpf James E. ; Marcott Tony L.. Load sensing pump control for a variable displacement pump. USP1999035876185.
  12. Hongliu Du ; Noah D. Manring. Method and apparatus for controlling pump discharge pressure of a variable displacement hydraulic pump. USP2002046375433.
  13. Manring Noah D. (Roland IA). Stabilizing device for variable displacement axial piston pumps. USP1996105568762.
  14. Ettinger Robert H. (Schenectady NY) Pasko Walter J. (Lee MA). Transformer core having charge dissipation facility. USP1984104479104.
  15. Watts Thomas A. (Ottawa IL). Variable displacement axial piston hydraulic unit. USP1996095554007.
  16. Smith David P.. Variable pump control for hydraulic fan drive. USP2001016179570.
  17. Geringer Kerry G. (Ames IA). Vibration and pressure attenuator for hydraulic units. USP1996125588805.