Patent ID: 7155945

Claim:
A lock comprising: a frame; a bolt movably mounted on the frame between a locked and an unlocked position and arranged to be operated by at least one handle; a shaft for the handle, which shaft has a longitudinal axis and is pivotally mounted about the longitudinal axis on the frame between a first and a second angular position; a mechanism for actuating the bolt upon rotation of the handle shaft to move the bolt from the locked to the unlocked position when the handle shaft is rotated from the first angular position to the second angular position and to move the bolt from the unlocked to the locked position when the handle shaft is rotated from the second angular position to the first angular position; and a mechanism for locking the handle shaft, which locking mechanism is arranged to be brought in a locked state wherein the handle shaft is locked in the first angular position and in an unlocked state wherein the handle shaft is unlocked, the locking mechanism comprising: a locking lever which is mounted on the handle shaft to rotate together with the handle shaft about the longitudinal axis thereof; a stop element which is mounted on the frame and arranged to cooperate with the locking lever to lock the handle shaft in the first angular position; the locking lever or the stop element forming a locking device which is movable, in the first angular position of the handle shaft, between a first position that locks the handle shaft in the first angular position and a second position wherein the handle shaft is unlocked; and an actuator comprising an electromagnet that moves the locking device between the first and second positions, the electromagnet being arranged to move the locking device by magnetic attraction of at least a portion of the locking device, which portion of the locking device is movable in a direction forming an angle (α) greater than about 45° with a flat plane (δ) extending at right angles to the longitudinal axis of the handle shaft.