Patent · US Expired

Security installation

US4652860A · kind A · utility

110Cited by

6References

9Claims

0Family size

Assignee

Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Walter Weishaupt · Munich, DE
Michael R. Tigges · Dubuque, US
Arnost Proske · Grafing, DE

Key dates

Filing date	Oct 7, 1983
Grant date	Mar 24, 1987
Priority date	—
Expiry date	Oct 7, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG07C2009/00888
WIPO fieldControl
WIPO sectorInstruments

Abstract

A security installation with a portable transmitter and a receiver arranged at the object to be protected for an IR, respectively, UHF code signal which is changeable at least in part; alone the code signal of the transmitter can be changed upon random command and can be written into the associated storage device of the transmitter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.