Smoke and fire shield damper

Details Smoke and fire shield damper Smoke and fire shield damper

F - Mech Eng,Light,Heat,Weapons

24

F

98/53

F24F 13/14 (2006.01) A62C 2/14 (2006.01)

Patent

CA 1103975

ABSTRACT OF THE DISCLOSURE A combination smoke and fire shield damper comprising a line of blades each of which is so supported for rotation in a surrounding frame that the blades are swingable about parallel axes to open or close an opening in the frame, in which the blades are provided with "opened-out" trailing edges so that the leading edge of each blade interlocks with the trailing edge of an adjacent blade when the blades are in their fully-closed positions. - 1 -

305812

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