Damper with adjustable resistance to blade motion
AssigneeResearch Products Corporation
InventorsPeter J. Davis, Thomas J. Anoszko
Life of this patent
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Abstract
A damper regulator for controlling the opening/closing characteristics of an HVAC damper has a swing arm coupled to the shaft on which the damper pivots. The swing arm has an arm carriage mounted to translate on the swing arm as the swing arm pivots, and a biasing spring connects the arm carriage to the damper regulator's housing, or to another suitable anchor. The translation of the arm carriage effectively adapts the characteristics of the biasing spring so that the damper need not be subjected to ever-increasing pressure to achieve greater airflow, or so that other damper opening characteristics can be achieved.
Claims20
A damper regulator including:
- a. a swing arm having a length extending from a pivot about which the swing arm rotates, the pivot being attached or attachable to a rotatable shaft having a damper affixed thereon,
- b. an arm carriage which translates along the length of the swing arm when the swing arm rotates about the pivot, and
- c. a biasing spring in connection with the arm carriage, wherein the biasing spring exerts a biasing force on the arm carriage when the swing arm rotates about the pivot.
A damper regulator including:
- a. a regulator housing,
- b. a swing arm having a length rotatable with respect to the regulator housing,
- c. an arm carriage affixed to move along the length of the swing arm,
- d. a biasing spring exerting a biasing force on the arm carriage when the swing arm rotates with respect to the regulator housing, and
- e. an adjustment assembly movably engaged to the regulator housing, wherein moving the adjustment assembly adjusts the biasing force exerted on the arm carriage by the biasing spring.
A damper regulator including:
- a. a regulator housing,
- b. a swing arm which rotates relative to the regulator housing at a pivot, the swing arm having a length extending away from the pivot,
- c. a biasing spring in connection with the swing arm and the regulator housing, wherein the biasing spring travels along the length of the swing arm when the swing arm rotates relative to the regulator housing.
Dependencies are inferred from the claim text.