Air-driven rotating window

Details Air-driven rotating window Air-driven rotating window

E - Fixed Constructions

06

B

E06B 7/28 (2006.01) B63B 19/02 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2233795

An air-driven rotating window assembly mountable to one side of a viewing window. The rotating window assembly faces toward the working or weather exposed area and slings off, by centrifugal force, any debris that contacts the rotating window so as to maintain clear visibility through a portion of the viewing window over which the rotating window extends. The rotating window assembly includes a support base and a rotating window rotatably mounted to the support base. The rotating window has an annular frame with propulsion passages therein that receive a flow of pressurized gas substantially tangentially to the frame. The propulsion passages redirect the gas to generate a propulsive force on the frame to spin the rotating window relative to the support base. The gas exits the annular frame through a restricted gap between the support base and the rotating window so as to form an air barrier that prevents debris from passing through the gap.

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