Chimney cap

Details Chimney cap Chimney cap

1997-04-22

1999-01-12

Joyce, Harold

Ventilation

Chimney or stack

Chimneytop or stacktop structure

454 7, F23L 1702

Patent

active

058579044

ABSTRACT:
A chimney damper and cap system containing a support base securable to the top of a chimney flue, an increased air flow bracket containing a support tube opening, an inner support tube secured to the bottom of the chimney cap, an outer support tube into which the inner support tube is slidably engaged, an inner and outer spring substantially contained within the inner and outer support tube, wherein the inner spring is secured to the chimney cap, and a damper cable secured to the inner spring, wherein the outer spring biases the chimney cap to an open position.

REFERENCES:
patent: 944831 (1909-12-01), Terramorse
patent: 978175 (1910-12-01), Lindenmeyer
patent: 3101039 (1963-08-01), Duchene et al.
patent: 3267832 (1966-08-01), Hinkle
patent: 3945307 (1976-03-01), Lyemance
patent: 4007730 (1977-02-01), Heebink
patent: 4020754 (1977-05-01), Dalsin et al.
patent: 4181119 (1980-01-01), Lyles
patent: 4368663 (1983-01-01), Tabacco
patent: 4554863 (1985-11-01), Dalsin
patent: 5094050 (1992-03-01), Jenkins
patent: 5125869 (1992-06-01), VonSick

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