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:
Jan. 04, 2005
Filed:
Jun. 10, 2002
Kazuto Kobayashi, Tokyo, JP;
Masamichi Yano, Tokyo, JP;
Kazuto Kobayashi, Tokyo, JP;
Masamichi Yano, Tokyo, JP;
Fujikoki Corporation, Tokyo, JP;
Abstract
An expansion valvecomprises a square-column-shaped valve body, and a spherical valve meanshoused within a valve chamberopposing against a valve seat. A working shaftcoming into contact with said valves meansconnects to a stopper member, thereby transmitting to the valve meansthe movement of a diaphragmbeing displaced by the pressure change in a pressure chamberof a power element. A lower housingof the power elementis provided with an opening portion and claws, which enable the power element to be coupled to a mounting unitformed to the top portion of the valve body. An elastic packing memberenables the element to be securely and airtightly coupled to the body. According to the present invention, the assembling of the valve is simplified and the manufacturing cost is reduced.