Patent ID: 7731477
Filing Date: 2010-06-08
Classification: F24F

Abstract:
1. An insulated housing apparatus for receiving an exhaust fan mounted therewith which comprises: A. a housing means defining a fan containment chamber means therewith adapted to receive an exhaust fan positioned therewithin, said housing means further defining an air intake aperture means and an air outlet aperture means positioned spatially displaced from one another within said housing means, said housing means further including; B. a first door member pivotally mounted with respect to said first upper frame member of said housing means and pivotally movable between a steady state closed position extending across said first upper frame member for facilitating closing of said air outlet aperture means and pivotally movable to an opened position extending away from said air outlet aperture means to facilitate allowing air to exit therethrough; C. a second door member pivotally mounted with respect to said second upper frame member of said housing means and pivotally movable between a steady state closed position extending across said second upper frame member for facilitating closing of said air outlet aperture means and pivotally movable to an opened position extending away from said air outlet aperture means to facilitate allowing air to exit therethrough, said first door member and said second door member being normally positioned in a steady state position extending across said air outlet aperture means toward one another for closing thereof and preventing air flow therethrough, said first door member and said second door member being pivotally movable to a opened position extending away from said air outlet aperture means to allow air to exit therethrough responsive to operation of the exhaust fan positioned within said fan containment chamber means; D. a first limit pin means secured to said first door member and positioned extending outwardly thereof and being movable along with said first door member into abutment with respect to said first upper frame member responsive to pivotal movement of said first door member to the opened position to limit the total amount of pivotal movement of said first door member from the closed position to the opened position; and E. a second limit pin means secured to said second door member and positioned extending outwardly thereof and being movable along with said second door member into abutment with respect to said second upper frame member responsive to pivotal movement of said second door member to the opened position to limit the total amount of pivotal movement of said second door member from the closed position to the opened position.