Latches for gates and doors
AssigneeD & D Group Pty Ltd
InventorsIrek Karcz, Anthony John Clark, Margaret Antkowiak
Life of this patent
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Abstract
A latch has a displaceable latching element in a housing for engagement with a separate striker arm to be latched behind an engagement shoulder of the latching element. The housing mounts a cylinder lock to receive a key from the front: A rotor is mounted on the rear of cylinder lock and rotation of the key rotation the rotor to drive a locking element to engage and lock the latching element. The rotor may also be axial displaceable against spring biasing responsive to a rear unit pushing element whereby unlocking from a rear cylinder lock may rotate the rotor to unlock and pushing causes the latching element to be displaced against its biasing to release the striker arm.
Claims18
A latch for holding closed a gate (or door) wherein the latch is adapted to co-operate with a striker arm, the latch comprising:
- (a) a housing in which
- (b) a displaceable latching element is mounted to be displaceable from a latching position towards an open position in which the striker arm is released for gate opening, and
- (c) the latching element having a latching shoulder to retain the striker arm when engaged behind the latching shoulder and having an engagement surface adapted to be engaged by the striker arm when the gate is moved towards a closed position to displace the latching element and for permitting relative movement of the striker arm to adopt a position behind the latching shoulder
- (d) a key-operated lock mounted in the housing and having a key operation for unlocking the latch.
- (e) a locking element for locking the latching element and adapted to be displaced upon actuation of the key-operated lock between a locking position, in which movement of the latching element is restrained from moving, and a displaced position in which the latching element is free to be moved
- (f) the element being in the form of a rotor rotatably mounted in the housing, and
- (g) the rotor having a portion remote from the lock capable of being engaged by a remote actuating unit which may be mounted on an opposite side of the gate post to the latch for remotely operating the latch via the rotor.
Apparatus for holding closed a gate (or door) wherein the latch is adapted to co-operate with a striker arm, the latch comprising:
- (a) a housing in which
- (b) a displaceable latching element is mounted to be displaceable from a latching position towards an open position in which the striker arm is released for gate opening,
- (c) the latching element having a latching shoulder to retain the striker arm when engaged behind the latching shoulder and having an engagement surface adapted to be engaged by the striker arm when the gate is moved towards a closed position to displace the latching element and for permitting relative movement of the striker arm to adopt a position behind the latching shoulder,
- (d) a locking element for locking the latching element and adapted to be displaced upon actuation of a key-operated lock between a locking position, in which movement of the latching element is restrained from moving, and a displaced position in which the latching element is free to be moved,
- (e) the element being in the form of a rotor, and
- (f) the rotor being mounted on a base portion of the housing and capable of being displaced axially by a rear actuating unit having a connection through an aperture in the base portion of the housing for unlatching the latching element.
Dependencies are inferred from the claim text.