Damper construction
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United States of America Patent
Stats
-
May 19, 1981
Grant Date -
N/A
app pub date -
Jun 25, 1979
filing date -
Jun 25, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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