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. 20, 2014
Filed:
Apr. 15, 2010
Geng Chen, Fengtai Science, CN;
Chang Jin, Fengtai Science, CN;
Beijing Aeonmed Co, Ltd., Beijing, CN;
Abstract
The present invention discloses a pressure control valve comprising: a cylindrical valve body which has a bottom wall and a side wall, wherein the bottom wall is provided thereon with an air inlet communicating with a device whose pressure to be limited, the side wall is provided with at least one guiding pin, and the cylindrical valve body has air outlets communicating with an exhausting system; a valve core, which is provided within the cylindrical valve body and in air-tight cooperation with the air inlet; a traveling guiding bar, having a lower end connected to the valve core; a covering fitted rotatably or up-and-down movably over the cylindrical valve body, for driving the traveling guiding bar to rotate or move up-and-down; a spiral guiding member, which is fitted up-and-down movably over the traveling guiding bar and is provided on its outer surface with spiral grooves into which the at least one guiding pin can be inserted; a pressure spring, having one end pressed against the valve core and the other end standing against the spiral guiding member.