Patent ID: 6915608
Filing Date: 2005-07-12
Classification: E05D,E05F,E05Y

Abstract:
1. A motorized operator for opening and closing a window sash relative to a window frame, comprising a motor mountable in a cavity defined in the window frame, an arm mechanism connectible to the window sash, a drive axle adapted to be rotated by said motor, gear means adapted to be rotatably driven by said drive axle and to so cause the arm mechanism to pivot upon rotation of said gear means for opening and closing the window sash relative to the window frame, and a manual operator displaceable between an inoperational position and an operational positions in which said manual actuator is drivingly connected to the arm mechanism for opening and closing the window sash; said gear means being manually displaceable between first and second positions, wherein in said first position, said gear means is rotated by said motor via said drive axle for pivoting the arm mechanism and displacing the window sash, whereas in said second position, at least part of said gear means is mechanically disconnected from said drive axle such that said part of said gear means is not rotated by said motor, said part of said gear means being connected to said arm mechanism, whereby with said manual operator in said operational position, said manual operator is adapted to rotate said part of said gear means for causing the arm mechanism to pivot.