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:
Jan. 15, 2013
Filed:
Oct. 02, 2007
Applicants:
Yoshihiro Fukano, Moriya, JP;
Tadashi Uchino, Moriya, JP;
Inventors:
Yoshihiro Fukano, Moriya, JP;
Tadashi Uchino, Moriya, JP;
Assignee:
SMC Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 31/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a manual switching valve, which enables a valve plug to be opened and closed manually, a piston is threadedly engaged with a shaft that is inserted through a housing, wherein a handle having a switching mechanism therein is installed on an upper end of the shaft. After a valve plug is seated on a valve seat, any further turning force applied to the handle is interrupted without being transmitted to the shaft owing to the fact that balls disengage from tooth portions of the shaft.