Abstract: A clutch and handle for applying rotation to a lockable mechanism is disclosed. In particular, the handle is adapted to prevent damage to the handle or a lockable mechanism when excess pressure or torque is applied to the handle. The torque limiting clutch mechanism limits the torque which can be applied by the handle such as to a lockable mechanism for securing a leaf within a frame. The torque limiting clutch mechanism comprises first and second rotors in confrontation to transmit rotational drive from the handle to the lockable mechanism. The first and second rotors are arranged to slip against each other beyond a maximum transferred torque.

Abstract: A lock system for controlling access, for example to a room or building, is disclosed. The lock system comprises a bolt module in which control of the bolt can be configured differently on the two sides of a leaf or door. Control of the bolt module may be provided by various locking modules, which are also disclosed herein. The bolt module is reversible for left handed or right handed operation. In one embodiment the bolt module comprises: a bolt moveable between a thrown position and a retracted position; and a first rotor assembly capable of accepting a drive element, the first rotor assembly arranged to drive the bolt. The bolt module may also comprise a second rotor assembly. The bolt module may comprise an anti-thrust member obstructing driving back of the bolt under action of an external force on the bolt. The bolt module may comprise a lockable cover.

Abstract: A clutch and handle for applying rotation to a lockable mechanism is disclosed. In particular, the handle is adapted to prevent damage to the handle or a lockable mechanism when excess pressure or torque is applied to the handle. The torque limiting clutch mechanism limits the torque which can be applied by the handle such as to a lockable mechanism for securing a leaf within a frame. The torque limiting clutch mechanism comprises first and second rotors in confrontation to transmit rotational drive from the handle to the lockable mechanism. The first and second rotors are arranged to slip against each other beyond a maximum transferred torque.

Abstract: A lock system for controlling access, for example to a room or building, is disclosed. The lock system comprises a bolt module in which control of the bolt can be configured differently on the two sides of a leaf or door. Control of the bolt module may be provided by various locking modules, which are also disclosed herein. The bolt module is reversible for left handed or right handed operation. In one embodiment the bolt module comprises: a bolt moveable between a thrown position and a retracted position; and a first rotor assembly capable of accepting a drive element, the first rotor assembly arranged to drive the bolt. The bolt module may also comprise a second rotor assembly. The bolt module may comprise an anti-thrust member obstructing driving back of the bolt under action of an external force on the bolt. The bolt module may comprise a lockable cover.

Abstract: A member, for example a bolt of a bolting mechanism, has a direction of translation. A plurality of blades are arranged to slide progressively across an arrest of the member, in a direction transverse to the simultaneous movement of the member in the direction of translation, to thereby prevent reverse movement of the member over a continuous range of member positions. In particular, each blade prevents return movement over a different range of member positions than the other blades.

Abstract: A push plate assembly (10) that may be used for driving a bolting mechanism is disclosed. The push plate assembly (10) may be included as part of a push pad assembly or panic bar assembly, such as may be fitted to single or multipoint bolt mechanisms, for example, those fitted to emergency exit doors. The push plate assembly comprises a housing (32), a push plate (36), a slide plate (45) and a drive cam (55). The drive cam (55) is arranged to rotate within the housing so as to rotationally drive a bolt mechanism.

Abstract: A push plate assembly (10) that may be used for driving a bolting mechanism is disclosed. The push plate assembly (10) may he included as part of a push pad assembly or panic bar assembly, such as may be fitted to single or multipoint bolt mechanisms, for example, those fitted to emergency exit doors. The push plate assembly comprises a housing (32), a push plate (36), a slide plate (45) and a drive cam (55). The drive cam (55) is arranged to rotate within the housing so as to rotationally drive a bolt mechanism.