Vent pipe termination with flapper and side vent

Details Vent pipe termination with flapper and side vent Vent pipe termination with flapper and side vent

1992-10-27

1993-12-07

Joyce, Harold

Ventilation

Chimney or stack

Chimneytop or stacktop structure

454 32, F23L 1706

Patent

active

052678946

ABSTRACT:
A vent termination assembly for a vertical pipe, stack or tube including a hinged flapper to normally close the end of said vent termination assembly and at least one downwardly sloping normally open to the atmosphere side pipe bevelled to discharge generally upward. The flapper contains energy adsorbing side beams to reduce velocity of the flapper during opening.

REFERENCES:
patent: 233584 (1880-10-01), Walker
patent: 261398 (1882-07-01), Smith
patent: 295687 (1884-03-01), Stasch
patent: 912076 (1909-02-01), Cochran
patent: 2774294 (1956-12-01), Kahle
patent: 4671171 (1987-06-01), Brill
patent: 4742766 (1988-05-01), Davison et al.

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