Patent ID: 9474919
Filing Date: 2016-10-25
CPC Classification: A62C,F24F

Claim Text:
1. A damper positioning lock, comprising: a fixed plate having an aperture and an arcuate surface disposed around an axis of rotation passing through the aperture; a plurality of recesses along an outer edge of the arcuate surface relative to the axis of rotation; a damper positioning handle pivotally associated with the aperture of the fixed plate such that the damper positioning handle extends perpendicular from and pivots about the axis of rotation; a rod slidably disposed within a channel on the damper positioning handle and moveable perpendicularly to the axis of rotation, and having a pin extending perpendicularly from the rod and disposed adjacent to the arcuate surface; and a spring associated with the damper positioning handle and rod so as to bias the rod in an extended position relative to the axis of rotation such that the pin engages one of the plurality of recesses; wherein movement of the rod against the spring bias disengages the pin from said one of the plurality of recesses to permit pivotal movement of the damper positioning handle relative to the fixed plate.