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Pulse-free blower 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F04C-017/04
  • F04C-029/08
출원번호 US-0851077 (1977-11-14)
발명자 / 주소
  • Weatherston Roger C. (Williamsville NY)
출원인 / 주소
  • Calspan Corporation (Buffalo NY 02)
인용정보 피인용 횟수 : 44  인용 특허 : 0

초록

A three-lobe Root\s blower is provided with feed back structure to bring the gas trapped in the impeller well volumes up to the discharge pressure prior to delivery. An essentially uniform and pulse-free discharge is produced by having a constant feed back flow rate which is achieved by always havin

대표청구항

A method for providing an essentially pulse free discharge flow as perceived at the outlet of a Root\s type blower having two impellers each of which having at least three lobes and including the steps of: running the impellers at an essentially constant speed; alternately communicating discharge pr

이 특허를 인용한 특허 (44)

  1. Uthoff ; Jr. Loren H. (Canton MI), Backflow passage for rotary positive displacement blower.
  2. Boyle, David; Holmes, Michael; Williams, Malcolm, Compressor control system and method for a portable ventilator.
  3. Boyle, David; Holmes, Michael; Williams, Malcolm, Compressor control system for a portable ventilator.
  4. Scarpa ; deceased Thomas J. ; Hoffer Kenneth R. ; Hayman Robert, Dual rotor flow meter.
  5. Sohler Wolfgang (Wangen DEX) Schubert Werner (Lindau DEX), External axial rotary piston blower with noise suppressing transfer ports.
  6. Allum, Todd W.; Williams, Malcolm R.; Cipollone, Joseph, Flow sensor.
  7. Allum, Todd W.; Williams, Malcolm R.; Cipollone, Joseph, Flow sensor.
  8. Allum, Todd W.; Williams, Malcolm R.; Cipollone, Joseph, Flow sensor.
  9. Patel Ajitkumar G., Fluid flow device with improved cooling system and method for cooling a vacuum pump.
  10. Craig N. Hansen ; Paul C. Cross, Fluid mover.
  11. Richard A. Davis, Four cycle four cylinder in-line engine with rotors of a supercharging device used as balance shafts.
  12. Boehland, Peter; Reitsam, Robert, Gear-wheel pump, in particular for a high-pressure fuel pump.
  13. DeVries, Douglas F.; Allum, Todd, Mechanical ventilation system utilizing bias valve.
  14. DeVries, Douglas F.; Allum, Todd, Mechanical ventilation system utilizing bias valve.
  15. DeVries, Douglas F.; Allum, Todd W., Mechanical ventilation system utilizing bias valve.
  16. DeVries, Douglas F.; Williams, Malcolm R., Method and apparatus for attenuating compressor noise.
  17. Adams Craig D., Multi-lobe pump for particle counters.
  18. Swartzlander, Matthew G., Optimized helix angle rotors for roots-style supercharger.
  19. Swartzlander, Matthew G., Optimized helix angle rotors for roots-style supercharger.
  20. DeVries, Douglas F.; Boyle, David; Holmes, Michael; Williams, Malcolm, Portable ventilator system.
  21. DeVries, Douglas F.; Boyle, David; Holmes, Michael; Williams, Malcolm, Portable ventilator system.
  22. DeVries, Douglas F.; Boyle, David; Holmes, Michael; Williams, Malcolm, Portable ventilator system.
  23. DeVries, Douglas F.; Boyle, David; Holmes, Michael; Williams, Malcolm, Portable ventilator system.
  24. DeVries, Douglas F.; Boyle, David; Holmes, Michael; Williams, Malcolm, Portable ventilator system.
  25. DeVries,Douglas F.; Boyle,David; Holmes,Michael; Williams,Malcolm, Portable ventilator system.
  26. Nissen Hans (Aerzen DEX), Roots compressor for compressing of gaseous media.
  27. Kaplan, Jirka; Davenport, Les, Roots type gear compressor with helical lobes having communication with discharge port.
  28. Kaplan, Jirka; Davenport, Les, Roots type gear compressor with helical lobes having feedback cavity.
  29. Allum, Todd W., Roots-type blower reduced acoustic signature method and apparatus.
  30. Hansen Craig N. ; Cross Paul C., Rotary fluid mover.
  31. Hansen Craig N. ; Cross Paul C., Rotary fluid mover.
  32. Huang, Paul Xiubao; Yonkers, Sean William, Rotary lobe blower (pump) or vacuum pump with a shunt pulsation trap.
  33. O\Neal Alan D. (Willard MO) Stone Michael D. (Rogersville MO) Coles Carl R. (Springfield MO), Rotary positive displacement blower having a diverging outlet part.
  34. Huang, Paul Xiubao; Yonkers, Sean William, Screw compressor with a shunt pulsation trap.
  35. Huang, Paul Xiubao; Yonkers, Sean William, Scroll compressor with a shunt pulsation trap.
  36. Huang, Paul Xiubao; Yonkers, Sean Wiliam, Shunt pulsation trap for cyclic positive displacement (PD) compressors.
  37. Huang, Paul Xiubao; Yonkers, Sean William, Shunt pulsation trap for positive displacement (PD) internal combustion engines (ICE).
  38. Huang, Paul Xiubao; Yonkers, Sean William, Shunt pulsation trap for positive-displacement machinery.
  39. Soeters ; Jr. Raymond A. (Farmington Hills MI), Supercharger carry-over venting means.
  40. Soeters, Jr., Raymond A., Supercharger carryback pulsation damping means.
  41. Kimmons D. L. (Clawson MI) Russell Daniel (Detroit MI), Supercharger with hourglass outlet port.
  42. Mueller Robert S. (Birmingham MI), Supercharger with reduced noise.
  43. Uthoff ; Jr. Loren H. (Canton MI), Supercharger with reduced noise and improved efficiency.
  44. Conti Carlo,ITX, Volumetric blower with covers having a duct for connection to the delivery manifold.
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