(19)

(11)

EP 0 297 133 A1

(12)

(43) Date of publication: 04.01.1989 Bulletin 1989/01 (21) Application number: 88901195.0 (22) Date of filing: 22.12.1987

(51) International Patent Classification (IPC):  B23B 29/ 04( . ) B23Q 1/ 28( . ) F16B 2/ 18( . ) F16C 29/ 10( . ) B23D 35/ 00( . ) F16B 2/ 04( . ) F16B 3/ 00( . ) (86) International application number: PCT/US1987/003377 (87) International publication number: WO 1988/004736 (30.06.1988 Gazette 1988/14)

(84) Designated Contracting States: DE FR GB SE (30) Priority: 23.12.1986 US 19860945905 (71) Applicant: TRI TOOL INC. Rancho Cordova, CA 95670 (US)	(72) Inventors: VANDERPOL, Jerald Eldorado Hills, CA 95630 (US) SCHUSTER, Randall Davis, CA 75616 (US) (74) Representative: Klunker . Schmitt-Nilson . Hirsch  Winzererstrasse 106 D-80797 München D-80797 München (DE)