(19)

(11)

EP 0 769 108 A1

(12)

(43) Date of publication: 23.04.1997 Bulletin 1997/17 (21) Application number: 95919779.0 (22) Date of filing: 05.05.1995

(51) International Patent Classification (IPC):  F16B 39/ 28( . ) F16B 39/ 32( . ) (86) International application number: PCT/US1995/005820 (87) International publication number: WO 1996/001379 (18.01.1996 Gazette 1996/04)

(84) Designated Contracting States: CH DE ES FR GB IT LI NL SE (30) Priority: 01.07.1994 US 19940269535 13.01.1995 US 19950372318 (71) Applicant: Vanderdrift, Richard W. Larkspur, CA 94939 (US)	(72) Inventor: Vanderdrift, Richard W. Larkspur, CA 94939 (US) (74) Representative: Purvis, William Michael Cameron  D. Young & Co., 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)