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, 1984
Filed:
Mar. 08, 1982
Louis A Ollivier, Palo Alto, CA (US);
Veriflo Corporation, Richmond, CA (US);
Abstract
A flow limit shutoff valve for automatically shutting off all flow between a source of high-pressure gas and a pressure regulator when that flow exceeds a preset flow rate. The flow to the shutoff valve is metered, resulting in lowering the pressure downstream from a metering valve. A main valve has a first chamber on one side downstream from the metering valve, and the valve's outlet is connected to this first chamber. A second chamber on the opposite side is connected to the inlet pressure. The main valve is biased in the opposite direction from that urged by the inlet pressure, so as normally to keep it open, but the main valve snaps shut when the inlet pressure forces overcome the sum of the downstream gas pressure forces and the biasing forces. To enable reopening, a bypass system connects the upstream side of metering valve to the first chamber, while there is a manually operated closure for manually opening and closing off the bypass to the first chamber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile