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:
Mar. 09, 2004
Filed:
Nov. 09, 2001
Ryuzaburo Yajima, Sakai, JP;
Nobuo Domyo, Sakai, JP;
Hajime Esumi, Sakai, JP;
Shigeharu Taira, Kusatsu, JP;
Daikin Industries, Ltd., , JP;
Abstract
Formed in a valve main body ( ) is a refrigerant flow path ( ) for lowering the amount of flow of a refrigerant which flows into an internal space ( ) of a casing ( ) from a refrigerant flow path ( ) through a needle fit/insert clearance ( ) defined between a needle fit/insert aperture ( ) and a needle ( ) inserted into the needle fit/insert aperture ( ). When, with the rise or drop in refrigerant pressure, refrigerant flows through the needle fit/insert clearance ( ), adhesion of sludge included in the refrigerant to the wall surface of the needle fit/insert clearance ( ) is reduced by a lessened amount of refrigerant flow in the needle fit/insert clearance ( ) by the refrigerant flow path ( ). This therefore prevents, as far as possible, malfunction of the needle ( ) due to sludge adhesion, thereby ensuring proper operation of the needle ( ).