Automatic window sash and lock operator

Details Automatic window sash and lock operator Automatic window sash and lock operator

E - Fixed Constructions

05

F

E05F 11/20 (2006.01) E05C 3/00 (2006.01) E05D 15/28 (2006.01) E05F 11/34 (2006.01)

Patent

CA 2146504

A window operator and lock structure for controlling a window sash relative to a window frame, including a drive input securable to a frame and engaging both an operator linkage securable to a window sash to effectuate motion of a secured sash relative to a frame, and a lock linkage securable to a lock structure for locking a secured sash to a frame. A link in the lock linkage moves in a generally longitudinal direction when operating the lock structure and includes a substantially transverse slot. A cam is pivotable about a cam axis fixed relative to the frame and includes a member receivable in the link slot to block operation of the lock linkage. The sash when closed against the frame includes a member engaging the cam to pivot the cam in a first direction moving the cam member clear of the link slot. The cam is blocked from pivoting when the sash is closed by engagement of the cam member with a side surface of the lock linkage link. The cam blocks the sash member from moving toward opening of the sash when the cam is positioned with the cam member clear of the link slot.

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