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. 12, 1989
Filed:
Oct. 20, 1987
Matsushita Electric Industrial Co., Ltd., Kadoma, JP;
Abstract
A flow rate of a gas is measured by a flow rate measurement means, and when the flow rate exceeds a predetermined reference value, occurrence of an abnormal state such as escape of the gas is detected and a shutoff means is automatically closed by control of a microcomputer, futhermore, 'a gas consumption pattern' showing combination of an amount of gas consumption, maximum flow rate and continuous consumption time of a consumer is observed in a predetermined time period, and a reference value of the gas consumption pattern is decided on the basis of the consumption state, moreover, a decision level of abnormal state is varied and set as a new reference values corresponding to the gas consumption pattern.