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:
Oct. 29, 2019
Filed:
Jul. 08, 2015
Applicant:
Smc Corporation, Chiyoda-ku, JP;
Inventors:
Assignee:
SMC CORPORATION, Chiyoda-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K 15/18 (2006.01); F16K 15/02 (2006.01); F16K 15/06 (2006.01); F16K 37/00 (2006.01);
U.S. Cl.
CPC ...
F16K 15/186 (2013.01); F16K 15/021 (2013.01); F16K 15/026 (2013.01); F16K 15/063 (2013.01); F16K 37/0033 (2013.01); F16K 37/0041 (2013.01);
Abstract
A pilot check valve includes: a fluid channel body; a moveable body that moves in an axial direction under effects of pilot pressure; a packing including a lip portion that is displaceable, integrally with the moveable body, between a valve close position and a valve open position; and a detector to detect position of the moveable body. The packing, in the valve close position, allows flow of an operating liquid from a first port side of the fluid channel body to a second port side and prevents the flow of the operating liquid from the second port side to the first port side, and in the valve open position, connects the first port and the second port.