(19)

(11)

EP 0 349 631 A1

(12)

(43) Date of publication: 10.01.1990 Bulletin 1990/02 (21) Application number: 89901505.0 (22) Date of filing: 27.12.1988

(51) International Patent Classification (IPC):  B60P 3/ 00( . ) B60P 1/ 64( . ) B60P 1/ 02( . ) (86) International application number: PCT/US1988/004665 (87) International publication number: WO 1989/006207 (13.07.1989 Gazette 1989/15)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 04.01.1988 US 19880140671 (71) Applicant: DJH ENGINEERING CENTER, INC. Salt Lake City, UT 84118 (US)	(72) Inventor: HVOLKA, Dusan, J. Salt Lake City, UT 84118 (US) (74) Representative: Orr, William McLean, et al  URQUHART-DYKES & LORD 5th Floor, Tower House Merrion Way Leeds West Yorkshire, LS2 8PA Leeds West Yorkshire, LS2 8PA (GB)