E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
268/48
E05F 11/00 (2006.01) E05F 11/14 (2006.01)
Patent
CA 1238662
Abstract A self-locking window operator having one or more arms transmitting a force from a drive mechanism to a window sash for positioning thereof and with the arms mounted and driven for rotational movement in positioning of the window sash and also mounted and driven for linear movement when the window sash is closed to achieve a locking action between the window sash and the window frame by engaging a locking mechanism which blocks the window against high window-opening loads.
469441
Meredith & Finlayson
Truth Incorporated
LandOfFree
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