Patent ID: 6644337
Filing Date: 2003-11-11
Classification: A62C,F16K,F24F,Y10T

Abstract:
A damper assembly having at least one damper blade operating between an open and closed position to control fluid flow through a conduit, the damper assembly comprising:(a) a bracket defining a base and a first and second oppositely disposed side walls extending upwardly therefrom; (b) a damper arm supporting the at least one damper blade and having terminal ends connected to the side walls at a pivot location, wherein the arm is operable to rotate about the pivot location between an open and a closed position; and (c) a fusible link assembly coupled to the bracket, the fusible link assembly including; (1) a housing member defining a support structure that engages the damper arm at a support location and interferes with the rotation of the damper arm; and (2) a channel member removably fused to the housing member via a solder material, the channel member including a base and first and second side walls extending upwardly therefrom, wherein the channel member separates from the housing member when the solder reaches a predetermined temperature; and wherein the interference between the support location and the damper arm is removed when the channel member separates from the housing member to allow the damper arm to pivot about the pivot location and close the at least one damper blade.