F - Mech Eng,Light,Heat,Weapons – 23 – L
Patent
F - Mech Eng,Light,Heat,Weapons
23
L
126/90
F23L 11/00 (2006.01) F23L 13/06 (2006.01)
Patent
CA 1119069
FLUE RESTRICTOR ABSTRACT OF THE DISCLOSURE A flue restrictor for installation in the flue piping of a heating system to reduce its effective cross sectional area com- prises 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.
332176
Day Maurice N.
Deschere Linda M.
Pritz Howard B.
Schluer Larry E.
Seidel Henry F.
Macrae & Co.
Michigan Consolidated Gas Company
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