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:
Apr. 28, 1981
Filed:
Sep. 01, 1978
John W Turko, River Rouge, MI (US);
Maurice N Day, Grosse Pointe Farms, MI (US);
Linda M Deschere, Farmington Hills, MI (US);
Howard B Pritz, Columbus, OH (US);
Larry E Schluer, Sugar Grove, OH (US);
Henry F Seidel, Detroit, MI (US);
Sherwood G Talbert, Columbus, OH (US);
Earl L White, Worthington, OH (US);
Michigan Consolidated Gas Company, Detroit, MI (US);
Abstract
A flue restrictor for installation in the flue piping of a heating system to reduce its effective cross sectional area comprises sheet metal inlet and outlet sections having flanges secured together in a joint that has a guideway in it for a sheet metal gate valve that may be transversely positioned to produce the desired cross-sectional area and riveted in place to provide a substantially tamper-proof assembly.