Abstract: A handle for a window operator. The handle includes a handle member 10 pivotally coupled to a base 11. A locking mechanism releasably locks the handle member 10 in a position relative to the base 11 which corresponds to an in-use position of the handle member. The locking mechanism includes a locking member 14 within the handle member 10. The locking member 14 performs a blocking action to prevent pivotal movement of the handle member relative to the base. The locking member has a push button 15 accessible to an exterior surface of the handle member whereby the locking member can be moved to remove the blocking action and allow the handle to be pivoted to a non-use position.

Abstract: A handle for a window operator. The handle includes a handle member 10 pivotally coupled to a base 11. A locking mechanism releasably locks the handle member 10 in a position relative to the base 11 which corresponds to an in-use position of the handle member. The locking mechanism includes a locking member 14 within the handle member 10. The locking member 14 performs a blocking action to prevent pivotal movement of the handle member relative to the base. The locking member has a push button 15 accessible to an exterior surface of the handle member whereby the locking member can be moved to remove the blocking action and allow the handle to be pivoted to a non-use position.

Abstract: 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.