Title:
可動シャフトのためのダイナミックシーリング編成
Document Type and Number:
Japanese Patent JP2007500331
Kind Code:
A
Abstract:
A dynamic sealing arrangement for preventing leakage of a fluid along a shaft includes multiple seals and pressurized barrier sealant is presented. According to one aspect, at least three seals are arranged along the shaft with pressurized barrier sealant between the first and second seals and a collection area is provided between the second and third seals to collect any leakage that might occur. Collected leakage, if any, is ported to an output port. According to another aspect, a unitary seal block member is provided that supports the dynamic sealing arrangement for the shaft and defines a piston chamber and a drilled passageway connecting the piston chamber and barrier sealant pressurization chamber between two seals. A substantial amount of plumbing is self contained in a single body minimizing the need for additional components or complexity.
Inventors:
Wade A Birdic
Garry M Bowman
Garry M Bowman
Application Number:
JP2006532938A
Publication Date:
January 11, 2007
Filing Date:
May 11, 2004
Export Citation:
Assignee:
Woodward Governor Company
International Classes:
F16J15/48; F16J15/00; F16J15/40; F16K41/04
Domestic Patent References:
| JPH09203466A | 1997-08-05 | |||
| JPH08301194A | 1996-11-19 | |||
| JPS63103006A | 1988-05-07 | |||
| JPS4811252A | ||||
| JPS54140165A | 1979-10-31 |
Attorney, Agent or Firm:
Sadaji Miyakawa
Tadao Naito
Kiyoshi Miyakawa
Hiroyuki Matsumura
Shigeo Shibata
Toshiyuki Kanai
Yuko Yoshimura
Tadao Naito
Kiyoshi Miyakawa
Hiroyuki Matsumura
Shigeo Shibata
Toshiyuki Kanai
Yuko Yoshimura