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Two stage scroll vacuum pump with improved pressure ratio and performance

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F04C-018/04
  • F04C-025/02
출원번호 US-0715726 (2000-11-20)
발명자 / 주소
  • Robert W. Shaffer
출원인 / 주소
  • Air Squared, Inc.
대리인 / 주소
    Paul M. Denk
인용정보 피인용 횟수 : 12  인용 특허 : 25

초록

A scroll vacuum pump includes a first stage having a first stage fixed plate with a spiral involute, a second stage having a second stage fixed plate with a spiral involute wrap, and an orbiting plate having upper and lower surfaces. An involute spiral extends from the orbiting plate bottom surface

대표청구항

1. A scroll vacuum pump having:a first stage including a first stage fixed plate having a spiral involute, a first stage orbiting plate having a spiral involute wrap, a first stage inlet, and a first stage outlet; said spiral involute wraps meshing with each other to define chambers, said chambers i

이 특허에 인용된 특허 (25)

  1. Kawano Akihiro (Gunma JPX) Terauchi Kiyoshi (Gunma JPX), High efficiency scroll type compressor with wrap portions having different axial heights.
  2. Sauls John R. (La Crosse WI), Involute and laminated tip seal of labyrinth type for use in a scroll machine.
  3. Nakamura Toshiyuki (Wakayama JPX) Sugihara Masahiro (Wakayama JPX) Inaba Tsutomu (Wakayama JPX) Oide Masahiko (Wakayama JPX) Kimura Tadashi (Wakayama JPX) Kobayashi Norihide (Wakayama JPX), Method for the assembly of a scroll-type apparatus.
  4. Etemad Shahrokh (Syracuse NY) Yannascoli Donald (Fayetteville NY) Hatzikazakis Michael (Bristol TN), Method of manufacturing a rotary scroll machine with radial clearance control.
  5. Shaffer Robert W., Multi-stage scroll compressor.
  6. Gttinger Heinrich (Wettingen CHX), Rotating spiral compressor with reinforced spiral ribs.
  7. Shaffer Robert (Hamilton OH), Scroll compressor having a tip seal.
  8. Shaffer Robert W. (Hamilton OH) Adriance Kyle (St. Charles County MO) Kimbro Charles D. (St. Charles County MO), Scroll compressor having idler cranks and strengthening and heat dissipating ribs.
  9. Shaffer Robert, Scroll compressor having tip seals and idler crank assemblies.
  10. Shaffer Robert W., Scroll compressor with a two-piece idler shaft and two piece scroll plates.
  11. Amata Atushi (Shizuoka JPX) Mizuno Takao (Shimizu JPX) Uchikawa Naoshi (Shimizu JPX), Scroll compressor with reinforcing ribs on the orbiting scroll.
  12. Hayano Makoto (Tokyo JPX) Nagatomo Shigemi (Tokyo JPX) Sakata Hirotsugu (Chigasaki JPX) Hatori Mitsuo (Yokohama JPX) Hattori Hitoshi (Yokosuka JPX), Scroll compressor with suction port in stationary end plate.
  13. Machida Shigeru (Ibaraki JPX) Saitoh Takashi (Kanagawa JPX) Sakamoto Susumu (Kanagawa JPX), Scroll fluid apparatus having an inclined wrap surface.
  14. Shaffer Robert W., Scroll fluid displacement apparatus with improved sealing means.
  15. Suzuki Yasuyuki (Wakayama JPX) Nakamura Toshiyuki (Wakayama JPX) Maeda Takahiro (Wakayama JPX), Scroll fluid machine with fine regulation elements in grooves having stepped portion.
  16. Terauchi Kiyoshi (Isesaki JPX), Scroll type compressor with wrap portions of different axial heights.
  17. McCullough John E. (Carlisle MA), Scroll type fluid displacement apparatus.
  18. McCullough John E. (Carlisle MA), Scroll-type apparatus with hydrodynamic thrust bearing.
  19. Fujii Kozaburo (Fukuoka JPX) Yamasaki Yutaka (Fukuoka JPX), Scroll-type fluid apparatus having a labyrinth and oil seals surrounding a scroll shaft.
  20. Ni Shimao, Scroll-type fluid displacement device for vacuum pump application.
  21. Haga Shuji (Yokohama JPX) Tanuma Masatomo (Yokohama JPX) Serita Takashi (Tokyo JPX), Scroll-type fluid machinery with seals for the discharge port and wraps.
  22. Shaffer, Robert W.; Acker, Jan R., Scroll-type, positive fluid displacement apparatus with diverse clearances between scroll elements.
  23. Clarke Hans T. ; Liepert Anthony G., Tip seal for scroll-type vacuum pump.
  24. McCullough John E. (Carlisle MA), Tip seal supporting structure for a scroll fluid device.
  25. Richardson ; Jr. Hubert (Brooklyn MI), Two-piece scroll member with recessed welded joint.

이 특허를 인용한 특허 (12)

  1. Deane, Geoffrey Frank; Howes, Lawrence; Taylor, Brenton Alan, Expandable product rate portable gas fractionalization system.
  2. Shaffer, Robert W.; Shaffer, Bryce R., Multi stage scroll vacuum pumps and related scroll devices.
  3. Deane, Geoffrey Frank; Taylor, Brenton Alan; Bare, Rex O.; Scherer, Andrew J.; Sargent, Bradley J.; March, Andrew J.; Merchant, Joseph E.; Smith, Jeffrey C., Portable gas fractionalization system.
  4. Deane, Geoffrey Frank; Taylor, Brenton Alan; Li, Chung Ming, Portable gas fractionalization system.
  5. Deane,Geoffrey Frank; Taylor,Brenton Alan; Bare,Rex O.; Sargent,Bradley J.; Scherer,Andrew J., Portable gas fractionalization system.
  6. Deane,Geoffrey Frank; Taylor,Brenton Alan; Bare,Rex O.; Scherer,Andrew J., Portable gas fractionalization system.
  7. Deane,Geoffrey Frank; Taylor,Brenton Alan; Li,Chung Ming, Portable gas fractionalization system.
  8. Kakuda, Masayuki; Sekiya, Shin; Koda, Toshihide; Sugihara, Masahiro, Refrigeration system including a scroll expander.
  9. Shaffer, Robert W.; Shaffer, Bryce R., Scroll type device including compressor and expander functions in a single scroll plate pair.
  10. Shaffer, Robert W., Semi-hermetic scroll compressors, vacuum pumps, and expanders.
  11. Shaffer, Robert W., Three stage scroll vacuum pump.
  12. Shaffer, Robert W., Three stage scroll vacuum pump.
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