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특허 상세정보

Hydraulic system for a work vehicle

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F15B-011/00   
미국특허분류(USC) 91/524 ; 303/961
출원번호 US-0263742 (1988-10-27)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 21  인용 특허 : 18
초록

The present invention is directed to a hybrid hydraulic system for a work vehicle having both an open center hydraulic circuit and a close center hydraulic circuit. An internal combustion engine drives a fixed displacement pump and a variable displacement pump. The fixed displacement pump provides hydraulic fluid to the open center circuit which directs hydraulic fluid to a steering circuit and the working circuit through a priority valve. The variable displacement pump provides hydraulic fluid to the close center circuit which directs hydraulic fluid to...

대표
청구항

A brake system for a work vehicle having a supporting structure and ground engaging means for propelling the vehicle, the brake system comprising: a source of hydraulic fluid; a first braking circuit which is fluidically coupled to the source of pressurized hydraulic fluid, the first braking circuit is provided with a first braking hydraulic actuator for braking the vehicle, a first regulating valve for controlling the flow of hydraulic fluid to the first braking actuator, a first outlet for directing hydraulic fluid from the first regulating valve to th...

이 특허에 인용된 특허 (18)

  1. Grauel Ingolf (Vaihingen/Enz DEX) Stumpe Werner (Kornwestheim DEX). Brake system for vehicle combinations. USP1986044585278.
  2. Nolte ; Gert ; Dittberner ; Wolfgang. Braking systems. USP1978014068899.
  3. Holmes William K. (Delafield WI). Closed center hydraulic valve control system for aerial lift. USP1988034730543.
  4. Ogata Yasuhiro (Hirakata JPX). Electro-hydraulic brake system having electric control means. USP1983084400039.
  5. Klope Lawrence R. (Cedar Falls IA). Fluid control system. USP1980024190298.
  6. Wible John E. (Painesville OH). Fluid operated system control. USP1987014635439.
  7. Hirose Kiyonobu (Ibaraki JPX) Izumiyama Taizo (Toride JPX). Front loading hydraulic excavator. USP1982104354797.
  8. Hasegawa ; Akira. Gas-hydraulic pressure type actuator for pipeline valve. USP1978104120478.
  9. Morizur Jean Y. H. (Compiegne FRX) Yeou Victor (Meau FRX). Hydraulic loading shovels. USP1985074526085.
  10. Belart Juan (Walldorf DEX). Hydraulic power booster. USP1987064671066.
  11. Breeden Robert H. (Metamora MI). Power transmission. USP1984104475442.
  12. Stumpe Werner (Kornwestheim DEX). Pressure medium brake system having a dual-valve control. USP1984034436347.
  13. Melocik Kurt B. (Mazon IL). Pressure reducing valve for dead engine lowering. USP1985044509406.
  14. Barbagli Rino O. (Borgaretto ITX). Remote controlled hydraulic circuit having selector means for establishing priority therein. USP1985044508013.
  15. Barnhart Donald M. (Martinsburgh WV) Carpenter ; Jr. James H. (Hagerstown MD). Sand lump grinder. USP1976093982702.
  16. Gage Douglas M. (Dubuque IA) Thompson Warren L. (Galena IL). Steering including accumulator for supplying emergency reserve of fluid. USP1981124303089.
  17. Bartscher Peter (Hanover DEX) Meyer Harald (Garbsen DEX) Staisch Diether (Walsrode DEX). Steering-brake control arrangement for a vehicle brake system. USP1984104475773.
  18. Lech Richard J. (Lockport IL). Variable volume dual pump circuit. USP1976063962870.

이 특허를 인용한 특허 피인용횟수: 21

  1. Bivas, Refael. Ammunition loading vehicle and method. USP2010057725217.
  2. Bivas,Refael. Ammunition loading vehicle and method. USP2007027181322.
  3. Zeiler, Hans-Peter; Brugger, Klaus. Brake arrangement. USP2016109469285.
  4. Donaldson,Joshua. Camless engine hydraulic valve actuated system. USP2007047204212.
  5. Cherney,Mark John. Closed circuit energy recovery system for a work implement. USP2008027325398.
  6. Edson,Joey D.; Foster,Randy C; Meckstroth,Richard J.; Speer,Billy L.. Electrically actuated, hydraulic power steering system. USP2009027487856.
  7. Hyodo, Koji; Yoshikawa, Masaki; Aoki, Tadayoshi; Hara, Katsutaka. Engine speed control device for industrial vehicle. USP2015079091221.
  8. Douglas Gerard Meyer. Force feedback and pressure equalization brake system. USP2002086431661.
  9. Diecke Friedrich Konrad ; Ward Christopher Mark ; Stevens Clyde Bennett. Hydraulic structure for a brake system. USP1999045895099.
  10. Haseotes Byron ; Zervas Harry. Hydraulic system for a road vehicle. USP1998095802745.
  11. Jessen, Soenke; Keuper, Gerhard; Loedige, Heinrich; Kunz, Reiner. Lifting gear valve arrangement. USP2011098020485.
  12. McReynolds, Randy Wayne. Multi-fuel compression ignition engine. USP20181010113453.
  13. Cheong, Hae Kyun. Negative control type hydraulic system. USP2014058713930.
  14. Meyeres,Rian Scot; Bishop,Kristen Dawn Cadman. Pattern select valve for control levers of a title work vehicle. USP2006057036248.
  15. Dunbar, Scott David; Alexander, William Guy; Wallestad, Steven Daniel. Secondary brake system with electrohydraulic proportional valve. USP2003076592190.
  16. Schick, Troy E.; Volfson, Boris. Tractor hydraulic brake circuit with ABS capability. USP2015038974011.
  17. Tozawa, Shoji; Binnaka, Madoka; Furuta, Hideto. Work machine. USP2009077562472.
  18. Tozawa, Shoji; Binnaka, Madoka; Furuta, Hideto. Work machine. USP2009107596893.
  19. Lech,Richard J.; Hennemann,Matthew J.. Work vehicle hydraulic system. USP2007087251934.
  20. Clifford, Jimmie D.; Smith, Brent E.; Anderson, Bruce E.; Trowbridge, Jeffrey C.; Osselaere, Guy H. J.; Vandendriessche, Rik; Verheye, Carlos J. A.; Leplae, Wim. Work vehicle with hydraulic assist for power off steering. USP2018019867325.
  21. Ericson, Hans; Unnebäck, Joakim; Carlsson, Sven-Åke; Filla, Reno. Working machine with one or more electric machines for driving, braking, and/or generating power and a method for operating such a working machine. USP2013018347998.