Abstract: A hinge mechanism comprising first and second members rotatable relative to one another about a hinge axis from a first to a second position; and a biasing arrangement operative to adopt an active mode to bias the first and second members into at least one relative position and operative to adopt an inactive mode where the biasing arrangement does not provide bias to the first or second members to undergo relative rotation, wherein the biasing arrangement remains in the inactive mode on relative rotation of the first and second members through a first selected angular displacement between the first position and the second position, and is in the active mode on relative rotation of the first and second members through a second selected angular displacement between the first position and the second position.

Abstract: A gate latch arranged to be mounted to either a gate or gate post and adapted to co-operate with a component mounted on the other of the gate or gate post to hold the gate closed, the gate latch comprising: a latch mechanism, and a housing containing at least a portion of the latch mechanism, the housing being configured to receive at least one latch accessory to modify the gate latch.

Abstract: A latch assembly comprising: a latch operable to adopt a latched condition and an unlatched condition; a magnet imparting a magnetic field; a sensor adapted to sense the magnetic field; the latch, magnet and sensor being configured such that a change in the condition of the latch effects a variance in the magnetic field sensed by the sensor to distinguish between the latched condition and the unlatched condition, wherein the latch includes a latch member that is moveable relative to both the sensor and the magnet when the latch changes from the unlatched condition to the latched condition and the proximity of the latch member to the magnet changes the strength of the magnetic field sensed by the sensor.

Abstract: A latch assembly comprising: a latch operative to adopt a latched condition and an unlatched condition; a magnet imparting a magnetic field; a sensor adapted to sense the magnetic field; the latch, magnet and sensor being configured such that a change in the condition of the latch effects a variance in the magnetic field sensed by the sensor such that the sensor is able to distinguish between the latched condition and the unlatched condition.

Abstract: A latching assembly for a gate comprising: a latch operative to adopt a latched condition, the latch comprising one or more members coupled together, each latch member extending along a longitudinal axis; and a lock comprising a lock portion adjustable from a retracted to a projected configuration to bring the lock portion into engagement with the or at least one of the latch members in the projected configuration so as to lock the latch in its latched condition.

Abstract: A magnetic self-latching device for a gate has a main body with handles on either side for operation or has an arrangement to be remotely actuated. A latching body has a high strength magnet usually provided at the bottom of a cavity which defines a latching shoulder. The latching body is adapted to be fixed to a gate post. The main body, with its housing, can be mounted on the gate frame and incorporates a latch pin which, in the door-closed position, is displaced by magnetic attraction to an extended latching position and against the biasing of a return spring. The gate cannot be opened until actuation of the mechanism occurs, for example by rotating a handle to retract the pin against the magnetic force; the gate can then be swung open. When the handle is released, the biasing spring retains the latch pin in a retracted position.

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. Embodiments include a gravity biased and manually opened latch and a spring biased self-locking embodiment.