Damper construction

Details Damper construction Damper construction

1979-06-25

1981-05-19

Yeung, James C.

Stoves and furnaces

Liquid heater

126288, F24B 700

Patent

active

042678188

ABSTRACT:
A damper for movement between covering and uncovering positions with respect to a fireplace opening for draft control, includes a pair of rigid plates, one larger and one smaller in peripheral dimensions than the opening to be covered. These plates are carried loosely on a rod with a flexible disc, preferably of insulating material and of the same size as the larger rigid plate therebetween. The rod is movable either axially or pivotally to bring the flexible disc into and out of contact with the structure defining the opening through which draft is to be controlled.

REFERENCES:
patent: 2846935 (1958-08-01), Still
patent: 3473559 (1969-10-01), Warren, Jr.
patent: 4184475 (1980-01-01), Faehling et al.

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