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:
May. 06, 2003
Filed:
Sep. 25, 2001
Kazuhiro Aoki, Yamanashi, JP;
Kitz Corporation, Chiba, JP;
Abstract
The valve is enabled, by being endowed with the force of stored energy, to generate an opening/closing motion with a small operating torque infallibly and stably, permit a reduction in cost, allow a compact construction, excel in durability, and enjoy a highly satisfactory practical value. Further by endowing the valve body which has already acquired the function of water stop with the function of steady flow volume thereby diversifying functionality, the valve is enabled to acquire the function of varying steady flow volume by virtue of the rotational frequency of the spiral spring. In the type of spring for opening/closing and controlling the flow path for a fluid, a leaf spring valve is provided which has one end of a spiral spring mounted in a valve chamber of a valve box and the other end thereof mounted on a valve shaft in the valve chamber , and the lateral surface of the spiral spring opposed in a pressed state to a valve seat of the valve box , whereby the lateral surface of the spiral spring is separated from the valve seat till a flow path outlet on the secondary side is opened by rotating the valve shaft by means of an actuator thereby displacing the spiral spring centripetally toward the valve shaft