(19)

(11)

EP 0 069 771 A1

(12)

(43) Date of publication: 19.01.1983 Bulletin 1983/03 (21) Application number: 82900709.0 (22) Date of filing: 15.01.1982

(51) International Patent Classification (IPC):  B28B 3/ 02( . ) B30B 1/ 00( . ) (86) International application number: PCT/US1982/000038 (87) International publication number: WO 1982/002510 (05.08.1982 Gazette 1982/19)

(84) Designated Contracting States: DE FR GB (30) Priority: 16.01.1981 US 19810225691 (71) Applicant: BUILDERS EQUIPMENT COMPANY Glendale, AZ 85011 (US)	(72) Inventors: THOMAS, Paul Michael Paradise Valley, AZ 85253 (US) ABRAHAMSON, Daniel Paul Phoenix, AZ 85031 (US) (74) Representative: Mayes, Stuart David, et al  BOULT, WADE & TENNANT 27 Furnival Street London, EC4A 1PQ London, EC4A 1PQ (GB)