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. 18, 1977
Filed:
Nov. 20, 1975
Charles D Branson, Greensburg, PA (US);
Robertshaw Controls Company, Richmond, VA (US);
Abstract
An electric ignition system for a gas cooking range that includes a low voltage circuit for energizing one or a plurality of parallel connected electric resistance igniters in response to the operation of a control valve supplying gas to a burner. Each resistance igniter element is connected to the secondary winding of a stepdown voltage transformer in an electrical circuit one side of which is the electrically conductive range body or housing and the second an insulated conductor assembled in the range at the time of its manufacture. The conductor may be coated with porcelain, an insulation material capable of withstanding the high temperature environment within the range without deterioration and breakdown. Both ends of this electrical circuit are easily accessible permitting ready replacement of the resistance igniter element and transformer. The primary side of the circuit is connected to a suitable supply voltage through a normally open switch operated by the gas supply control valve for the burner. Signal means may also be provided to indicate when the igniters are energized.