Flue restrictor

Details Flue restrictor Flue restrictor

1978-09-01

1981-04-28

Young, James C.

Stoves and furnaces

Dampers

Stovepipe

126292, 110147, 110163, F23L 300

Patent

active

042638909

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.

REFERENCES:
patent: 83139 (1868-10-01), Deilu
patent: 154039 (1874-08-01), Hager
patent: 301859 (1884-07-01), Cathcart
patent: 310224 (1885-01-01), Reed
patent: 610076 (1898-08-01), McClure
patent: 736513 (1903-08-01), Fowler
patent: 1384204 (1921-07-01), McMurdie
patent: 1506386 (1924-08-01), Schauman
patent: 1641875 (1927-09-01), Beaulieu
patent: 1663915 (1928-03-01), Mayers
patent: 3273625 (1966-09-01), Holtzman et al.

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