(19)

(11)

EP 0 844 932 A1

(12)

(43) Date of publication: 03.06.1998 Bulletin 1998/23 (21) Application number: 96930658.0 (22) Date of filing: 04.09.1996

(51) International Patent Classification (IPC):  B60B 5/ 02( . ) (86) International application number: PCT/US1996/014047 (87) International publication number: WO 1997/009181 (13.03.1997 Gazette 1997/12)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 08.09.1995 ZA 19950007574 (71) Applicant: CSIR Pretoria Transvaal Province (ZA)	(72) Inventor: ADRIAN, Christian, Andreas Lynnwood Ridge 0081 (ZA) (74) Representative: Spall, Christopher John, et al  BARKER, BRETTELL & DUNCAN 138 Hagley Road Edgbaston Birmingham B16 9PW Edgbaston Birmingham B16 9PW (GB)