$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Vehicle hydraulic system with pump speed control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F15B-011/16    F15B-013/06   
미국특허분류(USC) 60/422 ; 60/423 ; 60/431 ; 91/516
출원번호 US-0291681 (1981-08-10)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 20  인용 특허 : 4
초록

A lift truck is disclosed with a changeable speed electric motor for driving a single positive displacement pump to supply the power steering and various work handling hydraulic load circuits. Manually actuable selector means are operatively connected with the load circuits and a speed range control means is operatively connected with the selector means for energizing the electric motor in different speed ranges according to the actuation of the selector means. A priority demand valve is connected between the pump and the respective load circuits and sup...

대표
청구항

In a work vehicle of the type having at least first and second hydraulic load circuits, said first circuit including a first manually actuable selector member operatively coupled with a first control valve and a first hydraulic motor operatively connected with a first utilization device and adapted to be energized through the first control valve, said second circuit including a second manually actuable selector member operatively coupled with a second control valve, and a second hydraulic motor operatively connected with a second utilization device and a...

이 특허를 인용한 특허 피인용횟수: 20

  1. Nozari Farhad. Aircraft hydraulic pump control system. USP1999025865602.
  2. Baughn Bernard Dale ; Staton Timothy Matthew. Control method and apparatus for an electro-hydraulic power assisted steering system. USP2001076260356.
  3. Conley ; III Walter (St. Marys OH) Klopfeisch Kim A. (St. Marys OH). Control of hydraulic systems. USP1990074943756.
  4. Reverberi,Stefano; Fabbri,Fabrizio; Casalgrandi,Alessandro. Device for varying the pressure of the fluid delivered by a jet washer. USP2007107281903.
  5. Palleggi Guido (Modugno ITX) Lanza Fabrizio (Vado Ligure ITX). Electrically driven lift truck. USP1997065638387.
  6. Devan, Stephen Marshall; Galloway, Phillip W.; Williams, Kevin Stuart. Electronic control for a rotary fluid device. USP20181010100827.
  7. Dammeyer,Karl L.; Jones, Jr.,William C.. Electronically controlled valve for a materials handling vehicle. USP2008037344000.
  8. Kaneko, Shinji. Engine-powered forklift truck and method of releasing load handling interlock thereof. USP2016099440833.
  9. Cooper Robert R. (Orlando FL) Dean William C. (Orange City FL). Hydraulic and electrical system for aircraft belt loader. USP1988114782938.
  10. Christensen Carsten,DKX. Hydraulic control system for work vehicles. USP1999045896943.
  11. Dammeyer, Karl L.; Holbrook, Eric D.; Ihle, Darrin R.; McClain, Marc A.; Waltz, Lucas B.. Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed. USP2014128924103.
  12. Dammeyer, Karl L.; Holbrook, Eric D.; Ihle, Darrin R.; McClain, Marc A.; Waltz, Lucas B.. Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed. USP2015018935058.
  13. Dammeyer, Karl L.; Holbrook, Eric D.; Ihle, Darrin R.; McClain, Marc A.; Waltz, Lucas B.. Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed. USP2017099751740.
  14. Jones, Jr., William C.; Dammeyer, Karl L.; Ihle, Darrin R.; Waltz, Lucas B.. Materials handling vehicle having a manifold located on a power unit for maintaining fluid pressure at an output port at a commanded pressure corresponding to an auxiliary device operating pressure. USP2016039290366.
  15. Dammeyer, Karl L.; Holbrook, Eric D.; Ihle, Darrin R.; McClain, Marc A.; Waltz, Lucas B.. Materials handling vehicle measuring electric current flow into/out of a hydraulic system motor. USP2016039296598.
  16. Dammeyer, Karl L.; Holbrook, Eric D.; Ihle, Darrin R.; McClain, Marc A.; Waltz, Lucas B.. Materials handling vehicle monitoring a pressure of hydraulic fluid within a hydraulic structure. USP2016079394151.
  17. Hartiala Eero (Kangasala FIX) Kuusento Jaakko (Tampere FIX) Paasonen Hannu (Nokia FIX). Method of and device for adjusting the feed movement of a drill rod for drilling a rock. USP1987124711090.
  18. Mancell Michael G.,CAX. Reservoir for power steering fluid. USP1999055906221.
  19. Heusser Martin,DEX. Stacker control. USP2001046220027.
  20. Richard,Thurman L.; Donald,Sievenpiper A.. Two-speed passenger lift and pump assembly therefor. USP2007117290975.