Abstract: An electronic locking system is provided wherein an electronic lock's restriction of movement of a locked securing member, such as a door latch or bolt, can be selectively overridden from inside a locked enclosure by manual manipulation of a handle. The handle moves the securing member to open a locked barrier even though the electronic lock remains in a locked condition.

Abstract: In a first aspect, an electronic lock suitable for replacing interchangeable core locks has a solenoid assembly longitudinally aligned parallel to the rotational axis of the cylinder of the lock. In a second aspect an electronic lock has a ferromagnetic enclosure that surrounds at least a portion of a solenoid assembly when the cylinder of the lock is free to rotate.

Abstract: An exceptionally thin, replaceable reader head for an optical code reader has a thin base upon which are mounted both a light source for illuminating the codes in an edgewise direction relative to the base, and a light sensor for receiving light reflected from the codes also in an edgewise direction, the light sensor including an optical fiber for contacting the codes. Detachable electrical connectors for the light source and light sensor, respectively, extend generally in opposite edgewise directions for connection to the electrical circuits of the optical code reader. The base of the reader head contains deformable mounts for fixedly connecting the light source and light sensor to the base, as well as fiber holding structures for holding the optical fiber in a predetermined position relative to the base.

Abstract: A portable sensing device for reading data codes comprising a thin, generally planar housing of polygonal shape having a light source and light sensor at one of the corners thereof for reading data codes. The code reader contains a memory not only capable of storing the sensed data codes for future access, but capable of being programmed. A multipurpose battery charger is provided which is capable of charging multiple ones of the code readers simultaneously while receiving outputs from their memories and inputting commands or programming. Although the output from each code reader is performed optically through coded pulsing of the light source, the input occurs through the battery charger terminals, the charging current being delivered in coded pulses. Outputs from multiple code readers placed in a single charger occur sequentially in accordance with coded commands given by the charger.