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:
Dec. 18, 2001
Filed:
Apr. 20, 2000
Applicant:
Inventor:
Seiichiro Noritake, Nagano, JP;
Assignee:
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/122 ;
U.S. Cl.
CPC ...
F16K 1/122 ;
Abstract
In a double-damper apparatus,including a driving portion (,), two frame portions (,and,) arranged on both sides of the driving portion, and two open/close members (,and,) which are coupled with the driving portion (,) and perform the operation of opening/closing the openings (,and,) formed in the frame portions respectively by the driving force of the driving portion, a steps(s) &bgr; is formed between the flat portions (,and,) of the two frame portions (,and,). A labyrinth structure is formed between both flat portions (,and,) to prevent leakage of fluid between both fluid channels.