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특허 상세정보

Civil engineering and construction machinery with hydraulic drive system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F16D-031/02   
미국특허분류(USC) 60/434 ; 60/471 ; 60/484 ; 60/444
출원번호 US-0234177 (1981-02-13)
우선권정보 JP-0016635 (1980-02-15)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 14  인용 특허 : 1
초록

A hydraulic drive system for civil engineering and construction machinery having at least one hydraulic pump driven by a prime mover, at least one hydraulic actuator connected to the hydraulic pump, and at least one hydraulic cylinder, the hydraulic actuator and hydraulic cylinder being adapted to operate movable members. The hydraulic drive system is provided with a hydraulic pump-motor coupled to the prime mover, a first conduit for connecting the hydraulic pump-motor to one side of the hydraulic cylinder which moves a movable member in a direction in ...

대표
청구항

A hydraulic drive system for civil engineering and construction machinery including at least one hydraulic pump driven by a prime mover, at least one hydraulic actuator connected to the hydraulic pump, at least one hydraulic cylinder, the hydraulic actuator and the hydraulic cylinder being adapted to operate a plurality of movable members, and at least one other hydraulic pump driven by the prime mover and connected to the hydraulic cylinder through a directional control valve to operate an associated movable member, characterized in that the hydraulic d...

이 특허를 인용한 특허 피인용횟수: 14

  1. Sager William F. (1552 John Anderson Dr. Ormond Beach FL 32074). Apparatus for delivering a controllable variable flow of pressurized fluid. USP1991055016440.
  2. Williamson William A. (Niles MI). Composite hydraulic system. USP1987034649705.
  3. Tanaka, Hidenori; Ishikura, Kensuke; Ueda, Koji; Izuka, Takaaki. Construction machine. USP20180810047771.
  4. Okabe Nobuya (Tsuchiura JPX) Hirata Toichi (Ushiku JPX) Yoshida Kuniaki (Tsuchiura JPX) Sugiyama Genroku (Ibaraki JPX) Haga Masakazu (Ibaraki JPX) Tanaka Hideaki (Ibaraki JPX) Tatsumi Akira (Tokyo JP. Control system for hydraulically-operated construction machinery. USP1987104697418.
  5. Wada, Minoru; Ota, Toshiyuki. Damper operation control device and damper operation control method for working vehicle. USP2017059644339.
  6. Yamashita, Koji. Hybrid construction machine. USP2015049013050.
  7. Joung, Hea-Gyoon; Kim, Sung-Gon. Hydraulic circuit for construction machinery having floating function and method for controlling floating function. USP20181010094092.
  8. Kanai Takashi (Kashiwa JPX) Ochiai Masami (Chiyoda JPX) Oshina Morio (Shimoinayoshi JPX) Sonoda Mitsuo (Shimoinayoshi JPX). Hydraulic drive system. USP1991045003776.
  9. Udagawa,Tsutomu; Takiguchi,Kazuo; Ochiai,Masami; Yagyuu,Takashi; Sugiyama,Yukihiko; Aihara,Mitsuo. Hydraulic driving system of construction machinery. USP2009037500360.
  10. Johnson Steven H. (Dubuque IA) Williams Lary L. (Dubuque IA). Hydraulic system for an industrial machine. USP1989064838756.
  11. Tanaka Sotaro,JPX ; Yasuda Gen,JPX ; Ochiai Masami,JPX ; Nozawa Yusaku,JPX ; Kato Hideyo,JPX. Hydraulique drive device. USP2001066244048.
  12. Fujishima, Kazuo; Sonoda, Mitsuo; Hijikata, Seiji. Motive power regeneration system for working machine. USP2014028659177.
  13. Hijikata, Seiji; Fujishima, Kazuo. Power regeneration device for operating machine. USP2016039284718.
  14. Andruch, III, John; Lumkes, Jr., John H.. Regenerative hydraulic systems and methods of use. USP2015119194107.