The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1982
Filed:
May. 30, 1979
Rupert Stangl, Oberwerrn, DE;
Sachs-Systemtechnik GmbH, Schweinfurt, DE;
Abstract
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.