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:
Sep. 18, 2012
Filed:
Jan. 18, 2008
Kazuto Kobayashi, Tokyo, JP;
Takashi Mogi, Tokyo, JP;
Kazuto Kobayashi, Tokyo, JP;
Takashi Mogi, Tokyo, JP;
Fujikoki Corporation, Tokyo, JP;
Abstract
In an expansion valve, in a first passage through which a high pressure liquid refrigerant flows, an inlet port includes a large diameter passage portion formed from one side surface to the other side surface of a valve body, and a small diameter passage portion that provides communication between the large diameter passage portion on the bottom end thereof and a valve chamber. A coil spring provided in the valve chamber biases a valve member toward a valve hole. An O ring that seals between a plug that supports a lower end of the coil spring and the valve body is located below the small diameter passage portion and placed on the opposite side of the bottom end of the large diameter passage. Thus, the plug that closes an opening of the valve chamber can be mounted to an upper position, thereby reducing a vertical size of the valve body to further reduce a size of the valve body, and reducing an amount of use of metal materials for the valve body to reduce weight and cost.