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. 06, 2016
Filed:
Nov. 13, 2012
Applicant:
Daikin Industries, Ltd., Osaka-shi, Osaka, JP;
Inventors:
Shigetaka Wakisaka, Sakai, JP;
Masahiro Oka, Sakai, JP;
Assignee:
DAIKIN INDUSTRIES, LTD., Osaka-Shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
F25B 41/06 (2006.01); F16K 1/36 (2006.01); F16K 31/04 (2006.01);
U.S. Cl.
CPC ...
F25B 41/062 (2013.01); F16K 1/36 (2013.01); F16K 31/04 (2013.01); F16K 31/042 (2013.01); F25B 41/06 (2013.01);
Abstract
An electronic expansion valve includes a valve body, a valve seat, and a stepping motor. A valve portion is formed at a forward end of the valve body. The valve seat forms a variable throttle portion between the valve portion and the valve seat by allowing the valve body to move in an axial direction. The stepping motor moves the valve portion in accordance with a pulse number. At least one part of a side surface of the valve portion is shaped so that an opening degree ratio becomes constant.