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US 9,890,570 B2Granted
Sliding door or window latch
AssigneeASSA ABLOY New Zealand Limited
InventorStuart Horwood
Life of this patent
Estimating the term…
Abstract
A latch includes a protrusion that extends from a latch body. The protrusion moves from a fully extended position to a partially extended position when the door or window to which the latch is mounted is moved to a closed position. This movement of the protrusion disengages an anti-slam mechanism, allowing movement of a latch mechanism. Further, the partially extended protrusion engages in an anti-lift recess in the strike. Alternatively, the protrusion may extend from the strike and engage with an anti-lift recess in the latch body.
Claims11
A sliding door or window latch, including:
- i. a strike including:
- a) a latch engagement element;
- b) an anti-lift formation;
- and
- c) an anti-slam contact surface;
- ii. a latch body, including:
- a) a latch housing;
- b) a latch member mounted in the latch housing, configured to move between:
- an unlatched position;
- and a latched position in which, in use, the latch member is positioned to engage with the latch engagement element;
- c) a protrusion that extends from the latch housing and is:
- movable between a fully extended position and a partially extended position;
- and
- biased to extend from the latch body to the fully extended position;
- d) an anti-slam mechanism including the protrusion and actuated by movement of the protrusion, wherein the anti-slam mechanism restricts motion of the latch member from the unlatched position when the protrusion is in the fully extended position but allows motion of the latch member from the unlatched position when the protrusion is in the partially extended position;
- e) a drive element operatively connecting the protrusion to the latch member;
- and
- f) a security element mounted on the drive element and a formation on the latch housing configured to prevent unlatching motion of the latch member, wherein the security element is caused to disengage from the formation on the latch housing by unlatching motion of a user actuator;
- wherein, when, in use, a sliding door or window to which the latch is mounted is moved to a closed position, the protrusion:
- contacts the anti-slam contact surface and is forced by relative movement of the strike and latch body to move from the fully extended position to the partially extended position, thereby actuating the anti-slam mechanism to allow movement of the latch member from the unlatched position;
- and
- engages with the anti-lift formation thereby preventing vertical movement of the latch body relative to the strike.
19 more elements
A sliding door or window latch, including:
- a strike including:
- a) a latch engagement element;
- b) an opening defining an anti-lift formation;
- and
- c) an anti-slam contact surface;
- a latch body, including:
- a) a latch housing;
- b) a latch member mounted in the latch housing, configured to move between:
- an unlatched position;
- and a latched position in which, in use, the latch member is positioned to engage with the latch engagement element;
- c) a protrusion that extends from the latch housing and is movable between a fully extended position and a partially extended position;
- and biased to extend from the latch housing to the fully extended position, the protrusion comprising a neck portion;
- d) a drive element operatively connecting the protrusion to the latch member;
- e) an anti-slam mechanism that restricts motion of the latch member from the unlatched position when the protrusion is in the fully extended position but allows motion of the latch member from the unlatched position when the protrusion is in the partially extended position, the anti-slam mechanism comprises an anti-slam formation on the drive element that cooperates with an anti-slam element on the protrusion, and a protrusion surface that interacts with the anti-slam contact surface;
- wherein, when, in use, the sliding door or window to which the latch is mounted is moved to a closed position,
- the neck portion is received into the opening to allow the protrusion surface to contacts the anti-slam contact surface and is forced by relative movement of the strike and latch housing to move the protrusion from the fully extended position to the partially extended position, thereby moving the drive element to allow movement of the latch member from the unlatched position;
- and the neck portion engages with the anti-lift formation thereby preventing vertical movement of the latch housing relative to the strike.
14 more elements
Dependencies are inferred from the claim text.