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. 19, 1978
Filed:
Jun. 10, 1977
Frank Eugene Martin, Chester, MD (US);
Edward Larmour Rich, III, Arnold, MD (US);
Midori Anzen Company, Ltd., Tokyo, JP;
Abstract
Three chlorate candles are connected to a common conduit to which a normally open pressure switch is connected on the downstream side. The switch closes in response to a flow rate less than its predetermined minimum magnitude of oxygen from each candle flowing through the conduit. The pressure switch and one thermal switch for each candle except the last one are serially interconnected across a DC source through a resistor. When that candle first ignited is weakened in generation of oxygen, the next candle is ignited with the closure of the two serially connected switches and through the resulting heating of the associated resistor. The third candle is similarly ignited.