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:
Aug. 25, 1998
Filed:
Aug. 09, 1996
Wilfried Ostermann, Essen, DE;
Fred Welskopf, Herne, DE;
Kiekert AG, Heiligenhaus, DE;
Abstract
A central-locking system is reset upon loss of a portable remote-control unit and replacement by another in a system in which a diagnostic device is temporarily connected and switched to the stationary part of the locking system into a 'SETUP' mode. The key is then inserted into a key-operated switch to interrogate the transponder with the transceiver and from the latter the key-identification code word stored in the transponder and the transponder initial code word are transferred. The key-identification code word and transponder initial code word are stored in a code-word memory and the transmitter is then operated to send a remote-control changing code word to the receiver and enables switching back to the 'NORMAL' mode of operation and removal of the diagnostic device.