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Gas lubricated slow speed seal

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • F16J-015/54
출원번호 US-0020493 (1998-02-06)
발명자 / 주소
  • Pecht Glenn G.
  • Czubek John P.
  • Gabriel Ralph P.
  • Vasilache Anca
  • Rieger Robert Peter
  • Wasser James R.
출원인 / 주소
  • John Crane Inc.
대리인 / 주소
    McEachran, Jambor, Keating, Bock & Kurtz
인용정보 피인용 횟수 : 23  인용 특허 : 23

초록

A contacting mechanical end face seal for use in applications having slow shaft rotational speeds, such as mixers, agitators and reactors, includes at least one seal ring having a face with spiral grooves. Both hydrostatic and hydrodynamic lift characteristics in the seal are utilized to generate an

대표청구항

[ What is claimed is:] [1.] A gap type mechanical end face seal for providing fluid sealing between a housing and a rotatable shaft extending through a bore in the housing, the seal having an annular primary ring and a relatively rotating annular mating ring, each said ring being annularly symmetric

이 특허에 인용된 특허 (23)

  1. Azibert Henri V. (Windham NH) Willbrant Margaret B. (Derry NH) Attenasio Ann T. (Revere MA), Balanced mechanical seal assembly and flow ring therefor.
  2. DeHart Arnold O. (Rochester MI) Symons James D. (Southfield MI), Combined vacuum pump, bearing and seal assembly.
  3. Sedy Josef (Mount Prospect IL), Face seal with angled grooves and shallow annular groove.
  4. Lai Wei-Tang (Hoffman Estates IL), Face seal with double spiral grooves.
  5. Johnston David E. (Newcastle-upon-Tyne GBX), Face seals with liquid pulsation pumping feature.
  6. Lahrman Kenneth A. (Maineville OH), Fluid bearing face seal for gas turbine engines.
  7. Heck John A. (Timonium MD) Wilhelm H. Randall (Baltimore MD), Gas face seal.
  8. Wasser James R. ; Volden Douglas J. ; Netzel James P., Gas lubricated barrier seal.
  9. Matsui Shingo (Sakado JPX), Gas seal.
  10. Sedy Josef (Glenview IL), High pressure upstream pumping seal combination.
  11. Wasser James R. (Gurnee IL), Mechanical end face seal having an improved mating ring.
  12. Netzel James P. (Skokie IL) Pospisil Mark G. (Park Ridge IL), Mechanical face seal having centering means.
  13. Goldswain Ian M. (Woodlands Park GBX) Hignett Martin W. D. B. (Chiswick GBX), Mechanical seal containing a sealing face with grooved regions which generate hydrodynamic lift between the sealing face.
  14. Pecht Glenn G. (Vernon Hills IL) Hamaker Jon B. (Schaumburg IL), Non-contacting mechanical face seal.
  15. Pecht Glenn G. (Vernon Hills IL) Hamaker Jon B. (Schaumburg IL), Non-contacting mechanical face seal.
  16. Pecht Glenn G. (Wheeling IL) Hamaker Jon (Schaumburg IL), Non-contacting, gap-type seal having a ring with a patterned microdam seal face.
  17. Dempsey ; John D., Seal arrangement.
  18. Wasser James R. (Des Plaines IL) Volden Douglas J. (Park Ridge IL) Netzel James P. (Skokie IL), Secondary containment seal.
  19. Sedy Josef (Glenview IL), Self aligning spiral groove face seal.
  20. Kimura Yoshikazu (Fujisawa JPX) Teuboi Hideo (Tokyo JPX), Spiral groove face seal.
  21. Sedy Josef ; Zobens Artur, Spiral groove face seal.
  22. Lai Wei-Tang (Hoffman Estates IL) Pecht Glenn G. (Wheeling IL), Spiral groove seal arrangement for high vapor-pressure liquids.
  23. Pecht Glenn G. (Chicago IL) Feltman ; Jr. Paul L. (Chicago IL), Spiral groove seal system for sealing a high pressure gas.

이 특허를 인용한 특허 (23)

  1. Flaherty Andrew L. ; Engelmann Rainer F., Aerospace housing and shaft assembly.
  2. Litis, Paul T.; Avery, David J.; Smith, Gregory P.; Gunn, John R.; Kurtz, IV, David L.; Brut, Kevin, Carbon seal O-ring cavity sizing.
  3. Garrison, Glenn M., Circumferential back-to-back seal assembly with bifurcated flow.
  4. Portenlanger, Joseph; Dorig, Michael, Cooled mechanical seal assembly.
  5. Khonsari, Michael M.; Xiao, Nian, Cooled seal.
  6. Sun, Jianjun; Tu, Qiaoan; Hu, Qiong; Ma, Chenbo; Yu, Qiuping; Zhou, Min, Device for testing mechanical seal performance.
  7. Wilhelm, Howard Randall, Dry gas shutdown seal.
  8. Kiernan, Gregory Thomas, Hydrodynamic mating ring with integrated groove inlet pressure control.
  9. Artiles, Antonio F.; Stearns, Ethan K., Hydrodynamic non-contacting seal.
  10. Flaherty, Andrew L., Hydrodynamic seal with circumferentially varying lift force.
  11. Wojciech R. Wyczalkowski ; Steven C. Roselle ; Robert Peter Dowd ; Ronnie G. Thompson ; Ravi K. Sharma, Manometric fluid barrier seal.
  12. Ferris, Jason; Jacobs, Larry; Gray, Christopher, Mechanical face seal with a reverse trapezoidal face pattern.
  13. Kojima, Takeshi; Yamagami, Shinichi, Mechanical seal device and processing apparatus.
  14. Andrews, Stephen J., Mechanical seal system.
  15. Enomura, Shinichi, Mechanical seal, and agitating device and process using same.
  16. Gacek, Antoni; Wawak, Jan; Lasek, Jaroslaw; Okrzeszowski, Zbigniew; Kuder, Stefan, Non-contacting face seals.
  17. Junyi Omiya JP; Masato Wada JP, Rotary joint.
  18. Short, John Francis; Ruggeri, Edward Nicholas; Berard, Gerald Maurice, Scooping hydrodynamic seal.
  19. Inoue, Hideyuki, Sealing device.
  20. Colombo, Dario; Gasparini, Giuseppe; Pisani, Paolo, Sealing ring.
  21. Goldswain, Ian Martyn, Seals.
  22. Tejima,Yoshihiro, Sliding element.
  23. Robledo, Jaime, System and method for re-building a pump.
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