Title:
FLUID CONTROL VALVE
Document Type and Number:
WIPO Patent Application WO/2012/147775
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a fluid control valve that can reduce the torque necessary to open or close the fluid control valve. In the present invention, in a fluid control valve, a cam member is interposed between a knob and a piston, interlocking with the knob; a concave or convex cam surface is formed in a contact end face of the cam member that is in contact with the piston; and a piston engagement section that is either convex or concave, that is, the opposite of the shape selected for the cam surface, is formed in the portion of the piston that is in contact with the cam surface.
Inventors:
NAGAI KIYOSHI (JP)
Application Number:
PCT/JP2012/061057
Publication Date:
November 01, 2012
Filing Date:
April 25, 2012
Export Citation:
Assignee:
CKD CORP (JP)
NAGAI KIYOSHI (JP)
NAGAI KIYOSHI (JP)
International Classes:
F16K31/524; F16K31/04; F16K31/122; F16K31/60; F16K7/16
Foreign References:
| US2606450A | 1952-08-12 | |||
| DE693636C | 1940-07-16 | |||
| EP0424782A1 | 1991-05-02 | |||
| JPS5590863U | 1980-06-23 |
Attorney, Agent or Firm:
COSMOS PATENT OFFICE (JP)
Patent business corporation cosmos patent firm (JP)
Patent business corporation cosmos patent firm (JP)
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Claims: