Thermally activated, automatic damper and damper operator
OwnerFrancis J. McCabeinventor
Life of this patent
Estimating the term…
Abstract
For a damper, an improved damper operator including a bimetallic element connected at one end to the frame of the damper, and at the other end to a pivotal linkage which is also pivotally connected to the blade or blades of the damper.
Claims15
For a damper having a frame and at least one reciprocal blade operatively associated therewith, an improved damper operator comprising:
- a. a bimetallic element, a portion of which is fixedly connected to the frame;
- and
- b. a link bar, pivotally connected to and between other portions of the bimetallic element and face portions of the blade of the damper;
- so that reciprocating movement of the bimetallic element causes the blade to move within the damper frame.
For a damper having a frame and two reciprocal blades operatively associated therewith, an improved damper operator comprising a bimetallic element pivotally connected to and between face portions of the blades of the damper.
For a damper having a frame and at least one reciprocal blade operatively associated therewith, an improved damper operator comprising:
- a. a bimetallic element connected to the frame;
- b. a linkage, connected between and pivotally associated with the bimetallic element and the blade of the damper;
- and
- c. an adjustable means for maintaining the blade at a selected position intermediate a fully open and fully closed position, comprising a threaded screw extending through portions of the bimetallic element and into contact with a cross-bar means attached to the damper frame;
- so that extension or contraction of the bimetallic element causes the blade to move within the damper frame.
For a damper having a frame and a pair of reciprocal blades pivotally associated with a cross-bar attached to opposing portions of the frame, an improved damper operator comprising:
- a. a bimetallic element, one portion of which is connected to the cross-bar;
- and
- b. a link, pivotally connected to and between a free end portion of the bimetallic element and face portions of each of the damper blades;
- so that reciprocating movement of the bimetallic element causes the blades to move with respect to the cross-bar and within the damper frame.
Dependencies are inferred from the claim text.