Fireplace power cap

Details Fireplace power cap Fireplace power cap

1985-04-23

1990-03-20

Bennet, Henry A.

Stoves and furnaces

Dampers

Electric

98 59, F23L 1702

Patent

active

049092391

ABSTRACT:
A remotely controlled, reversible drive motor is mounted on an extension of the upper end of a chimney below a protective housing enclosing a spiral cam drive mechanism converting rotational movement of the motor into vertical linear motion of a cap laterally spaced from the housing in axial alignment with the chimney extension. Guided movement is thereby imparted to the cap between a closed chimney sealing and open positions.

REFERENCES:
patent: 2357642 (1944-09-01), Firehammer
patent: 3545365 (1970-12-01), Snader
patent: 4256257 (1981-03-01), Pinkerton

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