Latches for gates and doors
AssigneeD & D Group Pty Ltd
InventorsIrek Karcz, Anthony John Clark, Margaret Antkowiak
Life of this patent
Estimating the term…
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 the cylinder lock and rotation of the key causes rotation of 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.
Claims23
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;
- (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 in the form of a cylinder 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 housing 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;
- and
- (f) the locking element being in the form of a rotor rotatably mounted in the housing, and movable about its axis between the locking position and the displaced position, the rotor also being capable of being displaced axially when in the displaced position, and wherein under said axial movement, the latching element is caused to move towards the open position, such that the latch is able to be locked and unlocked by rotation of the rotor and moved from the latching position by axial displacement of the rotor.
A latch assembly for holding closed a gate or door comprising:
- a latch that co-operates 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 in the form of a cylinder 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 housing 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 locking element being in the form of a rotor rotatably mounted in the housing, and moveable about its axis between the locking position and the displaced position;
- (g) the housing lock and the rotor are rotatable about a common axis;
- (h) a remote actuating unit;
- and
- (i) a connector mounted to the rotor and the remote actuating unit to enable the remote actuating unit to remotely rotate the rotor;
- (j) wherein the connector is able to be axially displaced and the remote actuating unit is provided with an actuator to drive the connector to axially displace the connector, wherein axial displacement of the connector causes the latching element to be displaced from the latching position towards the open position such that the latch is able to be locked and unlocked by rotation of the rotor and moved from the latching position by axial displacement of the connector.
Dependencies are inferred from the claim text.