Latch device
AssigneeAssa Abloy Financial Services AB
InventorsHoward John Fountaine, Rana James Waitai
Life of this patent
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Abstract
A latch device for sliding and hung window systems. The latch device has a mounting base (15) with which a pair of counter-rotatable cam elements (11) are mounted. A lever cover (12) is slidingly mounted on the base (15). The lever cover (12) is coupled to the cam element (11) so that sliding movement of the lever cover (12) causes the cam elements to counter-rotate. Each cam element (11) has a cam portion (22) which is engageable through an opening (41) in a keeper (14) to latchingly engage behind a cam engagement surface (42) associated with the opening (41).
Claims18
A lock device for sliding and hung window systems, the latch device including a mounting base, a pair of counter-rotatable cam elements coupled to the base, a lever cover slidingly engaged with the mounting base, a coupling mechanism which couples the lever cover to the cam elements whereupon in use a sliding movement of the lever cover is translated into pivotal movement of the cam elements, a keeper having a pair of cam engagement surfaces with which the cam elements are engageable to latch the mounting base to the keeper and a deadlocking means whereby in use the cam elements can be deadlocked when in the latching position.
A lock device for sliding and hung window systems, the latch device including a mounting base, a pair of counter-rotatable cam elements coupled to the base, a lever cover slidingly engaged with the mounting base, a coupling mechanism which couples the lever cover to the cam elements, the coupling mechanism including a follower which engages with a guide associated with the lever cover, the follower being in the form of a pin which is spaced from a pivot axis about which the cam element is pivotally moveable whereupon in use a sliding movement of the lever cover is translated into pivotal movement of the cam elements, and a keeper having a pair of cam engagement surfaces with which the cam elements are engageable to latch the mounting base to the keeper.
Dependencies are inferred from the claim text.