(19)

(11)

EP 0 666 940 A1

(12)

(43) Date of publication: 16.08.1995 Bulletin 1995/33 (21) Application number: 93924264.0 (22) Date of filing: 26.10.1993

(51) International Patent Classification (IPC):  E01D 2/ 02( . ) E01D 19/ 12( . ) E01D 2/ 04( . ) E04B 5/ 40( . ) (86) International application number: PCT/SE1993/000881 (87) International publication number: WO 1994/010385 (11.05.1994 Gazette 1994/11)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IE IT LI NL PT SE (30) Priority: 29.10.1992 SE 19920003192 (71) Applicants: GRANSTRÖM, Anders S-182 35 Danderyd (SE) SVENSSON, Nils-Gustav S-183 38 Täby (SE)	(72) Inventors: GRANSTRÖM, Anders S-182 35 Danderyd (SE) SVENSSON, Nils-Gustav S-183 38 Täby (SE)