Gable ventilators

Details Gable ventilators Gable ventilators

1978-02-21

1980-02-26

Yuen, Henry C.

98 43R, 98 66R, F24F 702

Patent

active

041899890

ABSTRACT:
Improvements in roof ventilators; improvements in gable type roofing ventilators of the type typically having a vertical stack or chimney with a screening canopy thereover; provision of a dead air space at the top of a stack or chimney underneath and within an overlying hoodlike canopy; provision of a reversing flow channel by association of two hoodlike canopies with a stack, one of the canopies also providing an air capture space or trap at the top of the stack.

REFERENCES:
patent: 679912 (1901-08-01), Preuthun
patent: 832242 (1906-10-01), Davis
patent: 893978 (1908-07-01), Braycker
patent: 2909113 (1959-10-01), Hatcher
patent: 3149553 (1964-09-01), Solzman
patent: 3314355 (1967-04-01), Bassett
patent: 3520245 (1970-07-01), Painter

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