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:
Jul. 09, 2019
Filed:
Jan. 22, 2018
Applicant:
Fujikoki Corporation, Tokyo, JP;
Inventors:
Assignee:
FUJIKOKI CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/38 (2006.01); F16K 1/12 (2006.01); F16K 31/50 (2006.01); F16K 31/04 (2006.01); F16K 1/54 (2006.01); F25B 41/06 (2006.01); F25B 41/04 (2006.01);
U.S. Cl.
CPC ...
F16K 1/385 (2013.01); F16K 1/12 (2013.01); F16K 1/54 (2013.01); F16K 31/047 (2013.01); F16K 31/508 (2013.01); F25B 41/062 (2013.01); F25B 41/04 (2013.01); F25B 2341/0653 (2013.01); F25B 2600/2515 (2013.01); Y02B 30/72 (2013.01);
Abstract
An electric valve includes a seating surface portion attached to a valve seat and a curved surface portion inserted into a valve port that are disposed in a valve body. A constricted surface portion smaller in outer diameter than an upper end portion of the curved surface portion is provided between the seating surface portion and the curved surface portion. As a result, a rising flow rate can be sufficiently reduced and controllability in a low flow range can be effectively improved with management of the rising flow rate simplified.