Means controlling a flue damper

Details Means controlling a flue damper Means controlling a flue damper

1984-02-16

1985-11-05

Tanner, Harry

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

431 20, F23N 300

Patent

active

045508747

ABSTRACT:
A flue damper is rotated 360.degree. in a predetermined direction in 90.degree. increments to be selectively opened and closed in 90.degree. increments. The incremental rotation is accomplished by a motor driven timing mechanism with power to the motor being controlled by the timing mechanism and a single pole double throw relay.

REFERENCES:
patent: 2155642 (1939-04-01), Dewey
patent: 3025446 (1962-03-01), Leffler
patent: 4005820 (1977-02-01), Cress
patent: 4017024 (1977-04-01), Grostick et al.
patent: 4084743 (1978-04-01), Matthews et al.
patent: 4087045 (1978-05-01), Matthews
patent: 4295603 (1981-10-01), Clouser
patent: 4321030 (1982-03-01), Matthews
patent: 4374569 (1983-02-01), Hayes
patent: 4389014 (1983-06-01), Chow
patent: 4439139 (1984-03-01), Nelson et al.

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