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:
May. 13, 2003
Filed:
Sep. 28, 2001
Applicant:
Inventors:
Masaharu Nakagawa, Tokyo, JP;
Hiroshi Minamoto, Tokyo, JP;
Manabu Yabe, Tokyo, JP;
Yuuzou Hayashi, Tokyo, JP;
Norikimi Irie, Tokyo, JP;
Assignee:
Irie Koken Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 2/502 ;
U.S. Cl.
CPC ...
F16K 2/502 ;
Abstract
A gate valve according to the present invention including a first valve plate having a valve opening, a second valve plate connected to the first valve plate via first bellows, and an actuator provided between the first valve plate and the second valve plate, wherein the first valve plate is moved by the operation of the actuator, thereby enabling the valve plate, a valve rod, and the like to be made small and lightweight.