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Hydraulic lift apparatus for a battery driven lift truck

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F16D-031/02
출원번호 US-0378793 (1995-01-26)
우선권정보 DE-4402653 (1994-01-29)
발명자 / 주소
  • Baginski Ralf (Neetze DEX) Claussen Hans-Peter (Norderstedt DEX) Doss Hans-Joachim (Hamburg DEX) Klatt Andreas (Hamburg DEX)
출원인 / 주소
  • Jungheinrich Aktiengesellschaft (Hamburg DEX 03)
인용정보 피인용 횟수 : 37  인용 특허 : 11

초록

A hydraulic lift apparatus for a battery driven lift truck includes a hydraulic lift cylinder. A hydraulic pump operates as a pump in a load raising mode, so as to feed pressure fluid to the lift cylinder. The hydraulic pump operates as a motor in a load lowering mode. The hydraulic pump is driven b

대표청구항

A hydraulic lift apparatus for a battery driven lift truck including: a hydraulic lift cylinder, a hydraulic pump, which operates as a pump in a load raising mode, so as to feed pressure fluid to said lift cylinder, and which operates as a motor in a load lowering mode and is driven by the pressure

이 특허에 인용된 특허 (11)

  1. Nomura, Masami, AC elevator control system.
  2. Pelto-Huikko Raimo (Vantaa FIX), Apparatus for improving the performance of a motor-controlled hydraulic elevator.
  3. Watanabe Eiki (Inazawa JPX), Control apparatus for elevator.
  4. Grace Michael H. (Griffith IN) Karazija Arvin (Oak Forest IL), Electric truck having elevated load potential energy recovery with means to adjust rate of carriage descent.
  5. Hasegawa Fuminori (Tokyo JPX), Energy conservation type hydraulic elevator and speed control method of hydraulic elevator.
  6. Hasegawa, Kisaku, Hydraulic elevator.
  7. Watanabe Eiki (Inazawa JPX), Hydraulic elevator control apparatus using VVVF to determine the electric drive motor rotational speed.
  8. Kita Yasuo (Nagoya JPX), Hydraulic elevator installation.
  9. Schmid Martin (Niederhornbach DEX), Hydraulic lifting mechanism.
  10. Ross Christopher P. (West Drayton GB2), Mobile loaders.
  11. Watanabe Eiki (Inazawa JPX), Variable-voltage variable-frequency elevator control apparatus.

이 특허를 인용한 특허 (37)

  1. Kang, Byung Il, Boom driving system for hybrid excavator and control method therefor.
  2. Abbey, Kenneth Robert; Swendsen, Jennifer Carmel, Cart system for tool manipulation.
  3. Fagan, John E.; Jaipaul, Larry M.; McKee, Ralph Sam; Rucker, Stephen J.; Sandmann, David Dwight; Keck, Jr., William R., Control and communication system for a wireless vehicle lift system.
  4. Torney, Robert E.; Halstead, Nick V.; Drabek, Hans L.; Bollensen, Eric G.; Alexander, James C.; Leakey, Tony; Williams, Gerald R., Control system for hydraulically powered AC generator.
  5. Baker, William J., Coordinated lift system.
  6. Baker, William J., Coordinated lift system.
  7. Baker,William J., Coordinated lift system.
  8. Baker,William J., Coordinated lift system with user selectable RF channels.
  9. Dammeyer,Karl L.; Jones, Jr.,William C., Electronically controlled valve for a materials handling vehicle.
  10. Han, Dong Ho; Jang, Dal Sik, Energy reclaiming system for electric forklift truck.
  11. Trefz, Harlin J.; Wetzel, Ted, Engine with integral actuator.
  12. Matsuo, Tsutomu; Ishikawa, Hirohiko; Ueda, Yuki; Goto, Tetsuya; Morita, Junichi, Forklift hydraulic control apparatus.
  13. Kang, Byung Il; Hong, Ki Hwan, Hybrid excavator boom actuating system and method for controlling same.
  14. Jensen, Jeffrey Edward, Hybrid system for a powertrain and hydraulic system.
  15. Ueda, Yuki; Matsuo, Tsutomu; Uno, Takashi; Ishikawa, Hirohiko, Hydraulic control device for forklift.
  16. Ueda, Yuki; Matsuo, Tsutomo; Uno, Takashi; Ishikawa, Hirohiko; Yokomachi, Naoya, Hydraulic drive device for cargo handling vehicle.
  17. De Jong, Jurjen Jan; Laverman, Wybe Jan Thymen, Lifting system.
  18. 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.
  19. 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.
  20. 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.
  21. 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.
  22. 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.
  23. Vigholm, Bo; Palo, Markku, Method for controlling a hydraulic machine in a control system.
  24. Bernhard Frenzel DE; Fridbert Kilger DE, Method for current regulation of permanently excited synchronous motors for guided missiles having an electromechanical actuating drive for the rudder.
  25. Jaipaul, Larry M.; Helmich, Seth A., Pneumatic wheel lift synchronization.
  26. Pace Adolfo,ITX, Power unit for the supply of hydraulic actuators.
  27. Kazuhiro Maruta JP; Nobumi Yoshida JP, Pressure oil energy recover/regenation apparatus.
  28. Foley, Martin, System and method for managing a current flow in a lift machine.
  29. Kang, Byung Il, System for driving a boom of a hybrid excavator and a control method thereof.
  30. Lanza Fabrizio,ITX ; Parente Sante,ITX, System for raising and lowering the load support of an electric lift truck.
  31. Kamen, Dean L.; Ambrogi, Robert R.; Heinzmann, John D.; Heinzmann, Richard Kurt; Herr, David; Morrell, John B., User input for vehicle control.
  32. Kamen,Dean L.; Ambrogi,Robert R.; Heinzmann,John David; Heinzmann,Richard Kurt; Herr,David; Morrell,John B., User input for vehicle control.
  33. Fagan, John E.; Jaipaul, Larry M.; McKee, Ralph Sam; Rucker, Stephen J.; Sandmann, David Dwight; Keck, Jr., William R., Velocity controlled wireless vehicle lift system.
  34. Jaipaul, Larry M.; Fagan, John E.; Sandmann, David Dwight; Keck, Jr., William R.; Rucker, Stephen J.; McKee, Ralph S., Wireless vehicle lift system with enhanced electronic controls.
  35. Jaipaul, Larry M.; Fagan, John E.; Sandmann, David Dwight; Keck, Jr., William R.; Rucker, Stephen J.; McKee, Ralph S., Wireless vehicle lift system with enhanced electronic controls.
  36. Jaipaul, Larry M.; Fagan, John E.; Sandmann, David Dwight; Keck, Jr., William R.; Rucker, Stephen J.; McKee, Ralph S., Wireless vehicle lift system with enhanced electronic controls.
  37. Jaipaul, Larry M.; Fagan, John E.; Sandmann, David Dwight; Keck, Jr., William R.; Rucker, Stephen J.; McKee, Ralph S., Wireless vehicle lift system with enhanced electronic controls.
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