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특허 상세정보

Variable speed hydraulic pump

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) F04B-049/06   
미국특허분류(USC) 417/044.2; 417/044.1; 417/042; 417/280; 417/476; 092/072
출원번호 US-0257302 (2001-04-13)
국제출원번호 PCT/US01/12221 (2003-03-12)
§371/§102 date 20030312 (20030312)
국제공개번호 WO01/79697 (2001-10-25)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Quarles &
인용정보 피인용 횟수 : 39  인용 특허 : 10
초록

The invention provides a variable speed hydraulic pump designed to operate at a maximum horsepower throughout its pressure range by adjusting motor speed according to motor load parameters. In particular, the variable speed hydraulic pump includes a hydraulic pump unit coupled to a variable speed electric motor by a drive unit and to a hydraulic fluid tank for pressurizing and pumping hydraulic fluid when operated by the motor. A motor controller is electrically connected to the motor to supply drive signals to the motor based on electrical characteristi...

대표
청구항

1. A variable speed hydraulic pump, comprising:a variable speed electric pump drive motor; a hydraulic pump unit coupled to the electric motor and a hydraulic fluid source for pumping hydraulic fluid when operated by the motor; and a motor controller electrically connected to the motor for supplying an electrical drive signal to the motor in response to an electrical motor load signal characteristic of said drive signal which varies dependent on the torque exerted by said motor, said electrical motor load signal characteristic being detected by said moto...

이 특허를 인용한 특허 피인용횟수: 39

  1. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin. Anti-entrapment and anti-dead head function. USP2017019551344.
  2. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin. Anti-entrapment and anti-dead head function. USP2013128602745.
  3. Boese, Thomas G.; Bishop, Michael B.; Ambrose, Jeffrey C.; Emerson, John; Paton, David E.; Mazza, Joseph J.. Battery backup sump pump systems and methods. USP2018029885360.
  4. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Cox, Everett; Steen, Donald; Murphy, Kevin; Hruby, Daniel J.; Westermann-Rasmussen, Peter; Kjaer, Gert; Harvest, Nils-Ole; Yahnker, Christopher; Woodcock, Jr., Walter; Runarsson, Einar Kjartan; Hansen, Arne Fink; Morando, Alberto; Lungeanu, Florin. Control algorithm of variable speed pumping system. USP2017039605680.
  5. Stiles, Jr., Robert W.; Robol, Ronald B.; Berthelsen, Lars Hoffmann; Harvest, Nils-Ole; Cox, Everett; Steen, Donald; Murphy, Kevin; Hruby, Daniel J.; Westermann-Rasmussen, Peter; Kjaer, Gert. Control algorithm of variable speed pumping system. USP2016089404500.
  6. Robol, Ronald B.; Hruby, Daniel J.; Colvin, Johnathan Steven. Discharge vacuum relief valve for safety vacuum release system. USP2017029568005.
  7. Gandrud,Michael D.; Frederiksen,Torben; Esders,Hans. Electro-hydraulic power unit with a rotary cam hydraulic power unit. USP2007027182583.
  8. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Kjaer, Gert; Runarsson, Einar Kjartan. Filter loading. USP2013078480373.
  9. Gamble, Jonathan; Flanary, Ron; Hosfield, Robert L.; McCabe, Harold; Piedl, Martin; Ford, Charles; Anderson, Troy. Fire-extinguishing system with servo motor-driven foam pump. USP2012108297369.
  10. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin. Flow control. USP2017109777733.
  11. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Westermann-Rasmussen, Peter; Kjaer, Gert; Lungeanu, Florin. Flow control. USP2014088801389.
  12. Conley, Paul G.; Edler, Brad Allen. Lance pump having horizontally mounted stepper/servo motor. USP2016019239044.
  13. Conley, Paul G.; Edler, Brad Allen. Lance pump having vertically mounted stepper motor. USP2015099140246.
  14. Laughlin, Henry; Conley, Paul G.. Lance pump with a ram. USP2016059341173.
  15. Flanary, Ron; Piedl, Martin; Ford, Charles; Anderson, Troy. Method of controlling a motor. USP2012048164293.
  16. Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov. Method of controlling a pump and motor. USP2017019556874.
  17. Flanary, Ron; Piedl, Martin; Ford, Charles; Anderson, Troy. Method of operating a motor. USP2012058183810.
  18. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann. Method of operating a safety vacuum release system. USP2013128602743.
  19. Landrum, Michael; Miller, Douglas; Blackman, Donald E.; Heim, James M.. Pressure compensated and constant horsepower pump. USP2012068192173.
  20. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Kjaer, Gert; Lungeanu, Florin. Priming protection. USP2013118573952.
  21. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Kjaer, Gert; Lungeanu, Florin. Priming protection. USP2013068469675.
  22. Koehl, Robert M.. Pump control system and method. USP2013098540493.
  23. Koehl, Robert M.. Pump controller system and method. USP20190310241524.
  24. Koehl, Robert M.. Pump controller system and method. USP2016079399992.
  25. Koehl, Robert M.. Pump controller system and method. USP2016059328727.
  26. Koehl, Robert M.. Pump controller system and method. USP2016069371829.
  27. Koehl, Robert M.. Pump controller system and method. USP2013058444394.
  28. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter. Pumping system with housing and user interface. USP20190310240604.
  29. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Runarsson, Einar Kjartan. Pumping system with power optimization. USP2013088500413.
  30. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Runarsson, Einar Kjartan. Pumping system with power optimization. USP2014098840376.
  31. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Runarsson, Elnar Kjartan. Pumping system with power optimization. USP2018049932984.
  32. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Hruby, Daniel J.; Murphy, Kevin; Brown, Edward; MacCallum, David; Dunn, Dennis; Clack, Kenneth; Runarsson, Einar Kjartan; Morando, Alberto. Pumping system with two way communication. USP20190310240606.
  33. Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov. Safety system and method for pump and motor. USP2017079712098.
  34. Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov. Safety system and method for pump and motor. USP2013108564233.
  35. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann. Safety vacuum release system. USP2017089726184.
  36. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher R.; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter. Speed control. USP2013068465262.
  37. Stiles, Jr., Robert W.; Berthelsen, Lars Hoffmann; Robol, Ronald B.; Yahnker, Christopher; Hruby, Daniel J.; Murphy, Kevin; Runarsson, Einar Kjartan; Hansen, Arne Fink; Lungeanu, Florin; Westermann-Rasmussen, Peter. Speed control. USP2015069051930.
  38. Kidd, Melissa Drechsel; Genaw, William James; Pasche, Micheal Robert; Baase, II, Gary Thomas; Berthelsen, Lars Hoffmann; Fink, Rasmus; Holm, Martin Skov. System and method for motor drive control pad and drive terminals. USP2013058436559.
  39. Singh, Aditya; Wu, Duqiang; Gulati, Navneet. Work vehicle with enhanced implement position control and bi-directional self-leveling functionality. USP2017119822507.