Patent ID: 7194840

Claim:
A device for covering an opening, in buildings the openings having a frame the device comprising: a covering; at least one coupling for coupling said covering to a frame; at least one rotatable handle, rotatably coupled to said covering; at least one rotatable shaft coupled to said rotatable handle; at least one stationary shaft coupled to said rotatable shaft; at least one additional rotatable shaft, wherein said at least one rotatable shaft extends coaxially with an axis of rotation of said at least one rotatable handle and said at least one additional rotatable shaft is coupled to said at least one rotatable shaft so that when said at least one rotatable shaft rotates, it rotates said at least one additional rotatable shaft; a plurality of gears, with a first one of said gears coupled to said at least one rotatable shaft, a second one of said gears coupled to said at least one additional rotatable shaft, and third one of said gears coupled to said stationary shaft wherein when a user rotates said handle, said at least one rotatable shaft and said first gear rotate, causing said at least one additional rotatable shaft to rotate around said third gear on said at least one stationary shaft causing said covering to rotate with respect to the frame.