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:
Jan. 20, 1976
Filed:
Nov. 20, 1974
Pat Romanelli, Harrington Park, NJ (US);
Ram Domestic Products Company, Northvale, NJ (US);
Abstract
An automatic gas ignition system including an electrically-energized gas ignition element in proximity to a gas burner and a magnetic heat-sensing device comprising a permanent magnet and a sensing plate having a Curie temperature at or above the ignition temperature of the gas in the system. The sensing plate is located close to the ignition element so as to be heated thereby. The magnet is attracted into contact with the sensing plate when the latter is at a temperature below its Curie temperature, and is released from the plate when the latter is heated to its Curie temperature by the ignition element. The magnet is operatively connected to a valve supplying gas to the burner in such a manner as to maintain the valve closed when the magnet is attracted to the sensing plate, and to open the valve when the magnet is released by the plate. Thus, gas is permitted to flow to the burner only when the ignition element has reached a gas ignition temperature.