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(11)

EP 0 604 556 A1

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(43) Date of publication: 06.07.1994 Bulletin 1994/27 (21) Application number: 92920461.0 (22) Date of filing: 16.09.1992

(51) International Patent Classification (IPC):  G08B 15/ 00( . ) G08B 21/ 02( . ) (86) International application number: PCT/US1992/007863 (87) International publication number: WO 1993/006571 (01.04.1993 Gazette 1993/09)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 17.09.1991 US 19910762570 17.09.1991 US 19910761478 17.09.1991 US 19910761477 (71) Applicant: EGIS PERSONAL SAFETY SYSTES San Jose, CA 95112 (US)	(72) Inventors: JANIS, Bruce, A. San Francisco, CA 94131 (US) ROBERTSON, Rebecca, B. Campbell, CA 95008 (US) TAYLOR, Neil, R. Alameda, CA 94501 (US) (74) Representative: Jander, Dieter, Dipl.-Ing., et al  Dipl.-Ing. Dieter Jander Dr.-Ing. Manfred Böning Patentanwälte Leistikowstrasse 2 D-14050 Berlin D-14050 Berlin (DE)