(19)

(11)

EP 0 318 572 A1

(12)

(43) Date of publication: 07.06.1989 Bulletin 1989/23 (21) Application number: 88906173.0 (22) Date of filing: 16.06.1988

(51) International Patent Classification (IPC):  E04D 15/ 06( . ) (86) International application number: PCT/SE1988/000332 (87) International publication number: WO 1988/010347 (29.12.1988 Gazette 1988/28)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 16.06.1987 SE 19870002514 (71) Applicant: WERNQUIST, Lennart S-125 58 Farsta (SE)	(72) Inventor: WERNQUIST, Lennart S-125 58 Farsta (SE) (74) Representative: Onn, Thorsten  AB Stockholms Patentbyra Zacco & Bruhn P.O. Box 23101 S-104 35 Stockholm S-104 35 Stockholm (SE)