(19)

(11)

EP 0 043 380 A1

(12)

(43) Date of publication: 13.01.1982 Bulletin 1982/02 (21) Application number: 81900468.0 (22) Date of filing: 29.12.1980

(51) International Patent Classification (IPC):  B66C 23/ 64( . ) (86) International application number: PCT/US1980/001767 (87) International publication number: WO 1981/002036 (23.07.1981 Gazette 1981/17)

(84) Designated Contracting States: DE FR GB NL (30) Priority: 07.01.1980 US 19800110173 (71) Applicant: JACOBSON, Darwin J. Port Angeles, WA 98362 (US)	(72) Inventor: JACOBSON, Darwin J. Port Angeles, WA 98362 (US) (74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät  Maximilianstrasse 58 D-80538 München D-80538 München (DE)