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:
Nov. 07, 2023
Filed:
Jul. 17, 2020
James E. Pearson, Downers Grove, IL (US);
Stephen Sapp, Soddy-Daisy, TN (US);
Tony Leeseberg, Elgin, IL (US);
Brandon Cole, Chicago, IL (US);
Moises Contreras Hernandez, Itasca, IL (US);
James E. Pearson, Downers Grove, IL (US);
Stephen Sapp, Soddy-Daisy, TN (US);
Tony Leeseberg, Elgin, IL (US);
Brandon Cole, Chicago, IL (US);
Moises Contreras Hernandez, Itasca, IL (US);
Robertshaw Controls Company, Itasca, IL (US);
Abstract
Provided are embodiments of a gas valve for an intermittent pilot ignition system. The gas valve includes features designed to address the buildup of negative pressure in a fuel line connected to the gas valve that could cause internal valve diaphragms to open, drawing fuel from the gas valve. In embodiments, the gas valve includes a system of check valves designed to seal off the gas valve when a negative pressure develops. In other embodiments, the gas valve includes a relief valve having a relief port so that air is able to enter the valve proximate to the inlet port so as to avoid building a negative pressure sufficient to open the diaphragms. In both cases, the valve remains primed with fuel for subsequent ignition. The gas valve is envisioned to be useful for a variety of pilot operated systems.