摘要:
An electrically operated locking system for doors and the like has an electrically operated locking device installed inside the door. A control device installed outside the door is operatively connected with the locking device. A sensor detects the position of the door with respect to the door mounting by a light activated means electrically coupled to the locking device such that when darkness is sensed, the locking device is activatable to operate the locking unit. When light is sensed, however, the locking device is nonactivatable.
摘要:
A system for automatically locking a lavatory door on an aircraft from a remote location comprises means for activating the system, means for sensing the presence of a person in the lavatory, means for locking the lavatory when it is unoccupied and means for selectively overriding the system to allow entry by authorized personnel.
摘要:
An apparatus is presented which protects the cabling system on a computer. The apparatus allows only bona fide users to electro/mechanically connect or disconnect cables to a computer system. The apparatus essentialy comprises a first structure and a locking cover. The first structure is attached to a first cable terminal and prevents other terminals from being electro/mechanically connected to the first cable terminal. The locking cover then prevents the first structure from being removed from the first cable terminal. In the preferred embodiment the first structure is attached to the first cable terminal by one or more screws and the locking cover prevents access to the screw(s).
摘要:
An anti-theft device for an automotive vehicle includes a lock and key housed separately and remote from a bolt and its actuating mechanism. The bolt portion is located in an inaccessible housing and connected to the lock by means of a burglar-proof connection. The electronic lock arrangement employed permits of a large number of combinations and thereby increases the security of the anti-theft device. By placing the bolt in an inaccessible housing, direct tampering with the locking bolt is precluded.
摘要:
The present invention relates generally to security systems, and more particularly, to low cost, highly reliable mechanical-electronic locking units. The electronic security devices of the invention physically include a key assembly, a receptacle for the key in a door or other secured device, a receiver for decoding the signal sent from the key, and a novel electromechanical locking-and-unlocking component which is actuated electrically in response to an appropriate signal from the receiver.
摘要:
An opto-electronic, key-operated lock device means which provides a connection for one or more opto-electric circuits (control circuits employing light and logic for control of electrical circuits) as an incident to the insertion and operation therein of the proper key. The proper key is encoded for completion of predetermined light paths to photosensors coupled to decoder logic circuits for establishment and disestablishment of the opto-electrical circuits coincident with the use of the proper key.
摘要:
A combined mechanical and photoelectric lock. The mechanical lock is a conventional key operated tumbler lock. One portion of the key is provided either with a series of small holes or with an insert having a pattern of light and dark areas. A light beam is directed through the holes or the insert and is focused by an optical system on a photodetector which determines whether the projected pattern is valid or invalid.