(19)

(11)

EP 0 725 993 A1

(12)

(43) Date of publication: 14.08.1996 Bulletin 1996/33 (21) Application number: 93909127.0 (22) Date of filing: 14.04.1993

(51) International Patent Classification (IPC):  H01C 10/ 10( . ) H02H 9/ 02( . ) H01H 77/ 10( . ) H01H 1/ 029( . ) (86) International application number: PCT/SE1993/000324 (87) International publication number: WO 1993/021677 (28.10.1993 Gazette 1993/26)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 16.04.1992 SE 19920001223 (71) Applicant: KARLSTRÖM, Per Olov S-722 25 Västeras (SE)	(72) Inventor: KARLSTRÖM, Per Olov S-722 25 Västeras (SE) (74) Representative: Onn, Thorsten, et al  AB STOCKHOLMS PATENTBYRA, Zacco & Bruhn, Box 23101 104 35 Stockholm 104 35 Stockholm (SE)