Sachs Systemtechnik Gmbh

Rupert Stangl

Gerd Brunken

A locking device includes a key having a locking code and a device for reading the locking code on the key and comparing it with a predetermined locking code. The key has a grip portion and an elongated information carrier extending outwardly from the grip portion. The key is insertable into an opening in the reading device. Magnetic information elements are provided along the information carrier and reading elements in the reading device read the information elements when the key is inserted. A projection extends outwardly from the information carrier transversely of its elongated direction. An information element is located on the projection and a corresponding reading element is provided within the reading device. The dimension of the projection outwardly from the information carrier is such that only the information element located on the projection can excite its corresponding reading element.

Locking device

A key assembly for operating a coded security system is structured with a plurality of information carrier members mounted on a longitudinal member of the key assembly and angularly arranged thereon to define a code for a security system operated by the key. Alteration of the code is effected by changing the relative orientation of the information carrier members by threadedly loosening the longitudinal member upon which the carrier members are held, readjusting the position of the carrier members and tightening the longitudinal member to hold the information carrier members fixed in a desired relative position defining the code.

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Oberwerrn, Germany

Rupert Stangl