Title:
【発明の名称】無孔ダイヤフラムを用いたガス容器用弁
Document Type and Number:
Japanese Patent JP3415159
Kind Code:
B2
Abstract:
A gas cylinder valve with minimum wetted area has a one-piece valving assembly comprising a valve member, a non-perforated diaphragm member and a valve stem, the latter including a threaded stud and a stem shaft threaded on to the stud. The threaded stud, diaphragm member and valve member are fused together by a YAG laser weld applied through a central, blind bore in the valve member. Another through weld is applied around the peripheral edge of the threaded stud. A rim on the stem shaft clamps the diaphragm outside the peripheral weld through a pair of washers which absorb the torsional load. A helical compression spring bears on a valve stem shaft shoulder outside the wetted area to bias the valve open. A resilient bushing supported by a metal cup backs up the diaphragm member.
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Inventors:
Werener, Paul El. The Zade
Dan, Alan Ev.
Daniels, James Earl.
Dan, Alan Ev.
Daniels, James Earl.
Application Number:
JP50758596A
Publication Date:
June 09, 2003
Filing Date:
August 15, 1995
Export Citation:
Assignee:
Amcast Industrial Corporation
International Classes:
F16K1/30; F16K41/12; (IPC1-7): F16K41/12
Domestic Patent References:
| JP61157777U |
Other References:
【文献】欧州特許出願公開418557(EP,A1)
Attorney, Agent or Firm:
Toshiyuki Maruyama (1 outside)