摘要:
A flush type rotary drive means which is caused to move between a position flush with a surrounding surface and a protruding position as the latch is moved between its locked position and its unlatched position, the drive means, by reason of its protruding position, being readily visible to indicate the partially or completely unlocked condition of the latch; one embodiment being arranged to move a reciprocable latch; another embodiment being arranged to turn a rotary latch.
摘要:
A mortise lock is equipped with a lever of bellcrank shape, through which a deadbolt controls an indicator stud or button that is positioned a considerable distance above the deadbolt and the latchbolt retracting knob. The lever coacts with the indicator stud through a cam portion that is symmetrical to permit operation without regard to the hand of installation.
摘要:
An apparatus for tracking and indicating the status of a lock, comprising: a movement sensing device for sensing movement of a key related to said lock and providing information about said movement; a controller for reception of said information about said movement, processing said information and identifying a key rotation event that is associated with a lock status; and an indication unit being connected to said controller; providing an indication of the lock status according to control signals that are provided by said controller.