Title:
【発明の名称】スプール弁組立体
Document Type and Number:
Japanese Patent JP3347105
Kind Code:
B2
Abstract:
In a conventional spool valve, the nut holding the diaphragm to the spool valve stem is replaced by a retaining ring, thereby simplifying the machining operation and eliminating the problems caused by damaged threads. A good seal is nevertheless achieved by providing an insert molded diaphragm having a bead around its axial aperture, which is compressed against the radial flange of the valve stem, and such that the retaining ring will maintain the compressed condition of the bead against the radial flange to maintain a good seal.
Inventors:
Trevor A. Scott
Wolf Starmer
Wolf Starmer
Application Number:
JP29381199A
Publication Date:
November 20, 2002
Filing Date:
October 15, 1999
Export Citation:
Assignee:
Westinghouse Air Brake Technologies Corpor ation
International Classes:
F16K7/17; F15B13/04; F15B13/042; F16K3/24; F16K3/30; F16K11/07; F16K27/04; F16K31/126; (IPC1-7): F16K31/126; F16K3/30
Domestic Patent References:
| JP50135613A | ||||
| JP247255Y2 | ||||
| JP574290Y1 | ||||
| JP6326638Y1 | ||||
| JP5036725Y1 |
Other References:
【文献】米国特許4887516(US,A)
【文献】米国特許3105508(US,A)
【文献】米国特許2904068(US,A)
【文献】米国特許3105508(US,A)
【文献】米国特許2904068(US,A)
Attorney, Agent or Firm:
Soga Doteru (6 people outside)