US 11,994,314 B2
Rectangular flanged bubble tight damper
Raguraman Gnanavadivel, Tamil Nadu (IN); Sathish Nagabooshanam, Kavaraipettai (IN); Vinothkumar Muthu, Ramanathapuram (IN); Sathish Palanisamy, Coimbatore (IN); John Bernard Haukap, Lee's Summit, MO (US); and Timothy Alan Lockard, Sedalia, MO (US)
Assigned to AIR DISTRIBUTION TECHNOLOGIES IP, LLC, Milwaukee, WI (US)
Filed by Air Distribution Technologies IP, LLC, Milwaukee, WI (US)
Filed on Mar. 10, 2020, as Appl. No. 16/814,652.
Prior Publication US 2021/0285687 A1, Sep. 16, 2021
Int. Cl. F24F 13/14 (2006.01); F16K 27/10 (2006.01); F24F 13/16 (2006.01)
CPC F24F 13/1406 (2013.01) [F16K 27/102 (2013.01); F24F 13/1486 (2013.01); F24F 13/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A damper, comprising:
a frame comprising a first C-shaped component and a second C-shaped component attached to one another to form a rectangular shape of the frame and to define an air flow path through the frame;
an axle rotatably coupled to the first C-shaped component and the second C-shaped component;
a damper blade attached to the axle, wherein the damper blade is configured to rotate between an air flow restriction position and an air flow passage position, and the damper blade is configured to close the air flow path through the frame in the air flow restriction position; and
a blade seal extending across an entire surface area of a first surface of the damper blade, wherein the axle is attached to a second surface of the damper blade opposite the first surface.