(19)

(11)

EP 0 084 528 A1

(12)

(43) Date of publication: 03.08.1983 Bulletin 1983/31 (21) Application number: 81902178.0 (22) Date of filing: 27.07.1981

(51) International Patent Classification (IPC):  B67D 3/ 02( . ) B01F 1/ 00( . ) A23L 2/ 00( . ) E04F 11/ 032( . ) (86) International application number: PCT/US1981/001001 (87) International publication number: WO 1983/000352 (03.02.1983 Gazette 1983/04)

(84) Designated Contracting States: CH DE FR GB LI NL SE (71) Applicant: SPIRAL MANUFACTURING, INC. Baton Rouge, LA 70895 (US)	(72) Inventor: HAMMOND, Robert S. Baton Rouge, LA 70895 (US)