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:
Dec. 04, 2012
Filed:
Nov. 13, 2009
Applicant:
Jerry Chen, Orange, CA (US);
Inventor:
Jerry Chen, Orange, CA (US);
Assignee:
Quantum Fuel Systems Technologies Worldwide, Inc., Troy, MI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F17C 5/06 (2006.01); G05D 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Excess flow valve devices, which are responsive to pressure and flow conditions in a bi-directional system, including structures to restrict flow in one direction through openings of a stopper of an excess flow valve based on balancing forces from at least a spring and a frictional force caused by the flow. Bi-directional system employing at least one pressure delayer responsive to pressure and flow impulses to protect a tank valve of a storage tank or a regulator during a refill phase or a discharge phase.