The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2004
Filed:
Sep. 11, 2000
Masao Koizumi, Fuchu, JP;
Koichi Ohashi, Fuchu, JP;
Hamai Industries Limited, Tokyo, JP;
Abstract
The control valve according to the present invention has a high durability, so that the valve is not easily damaged even in case that the valve is provided in a corrosion gas current path. The valve has a construction such that a diaphragm ( ) is contained in the valve body ( ), which has a valve chamber ( ) between the gas current in path ( ) and the gas current out path ( ). The diaphragm is urged against an opening ( ) formed in the center of the valve seat in the valve chamber ( ) to open and close the opening. The valve has a valve control member ( ), which has a clamping member ( ) to clamp the diaphragm and is made to contact to the diaphragm from outside to open and close the opening. The diaphragm has an urging member ( ) made of ceramic, which is fixed to the opening ( ) side of the diaphragm so that the resistance to corrosion of the diaphragm is improved.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile