Patent ID: 8393379

Claim:
A shutter of the type having a frame, and louvres extending from side to side within the frame, the louvres being rotatable about parallel axes, the side frames having a hollow interior, and defining longitudinal slots, and comprising; a louvre control member within at least one side of the frame for operating all louvres; drive connector members connected to said louvre control member for engaging respective said louvres, and each said drive connector member in turn defining, a first gear operated by said louvre control member; a second gear supporting and driving an end of a louvre; a drive housing supporting said first and second gears in meshing engagement said drive housing having two first gear bearing walls lying spaced apart in parallel planes and each said bearing wall defining respective first gear bearings; said first gear defining a cylindrical body having two ends, with the first gear intermediate its ends, and said cylindrical body forming rotation surfaces on both said ends, on either side of said first gear, said cylindrical surfaces being received in said respective first gear bearings in respective said first bearing walls and, drive surfaces on said first gear for interengaging with said louvre control member.