E - Fixed Constructions – 05 – F
Patent
E - Fixed Constructions
05
F
E05F 11/34 (2006.01) E05F 11/16 (2006.01) E05F 15/12 (2006.01)
Patent
CA 2414327
A window operator for the opening and closing of a hinged window. The window operator has a rotatable lead screw 16 on which moves a slider 19. A driving element 18 is threaded on to the lead screw 16 and is coupled to the slider 19. A lost motion mechanism is operable upon the sliding movement of the slider being inhibited at final closing or initial opening of the window. The lost motion mechanism includes a tab 42 engaged in a helical slot 43. Movement of the tab in the helical slot causes an angular displacement of the driving element 18. A. retention member 47 is moveable in response to the angular displacement and retains the slider 19 against movement while the driving element 18 continues to move along the lead screw. The tab 42 is thus moveable along slot 49 to operate a multipoint locking mechanism L.
Assa Abloy Financial Services Ab
Marks & Clerk
LandOfFree
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