Title (en)

HELICAL WASTE SHREDDER

Publication

EP 0069721 A3 19830518 (FR)

Application

EP 82870035 A 19820623

Priority

FR 8112411 A 19810624

Abstract (en)

[origin: EP0069721A2] The shredder comprises two superposed shredding stages (8, 4) in which four grooved shafts (19, 20, 27, 28) are arranged which bear toothed rings, (21) in the stage (8) and (29) in the stage (4). At each stage, the rings overlap those of the other shaft of the same stage and are offset angularly on their respective shaft in such a way that their teeth define a helical pitch in the same direction as the direction of rotation of the shafts. The lower rings (29) are twice as thin and rotate twice as quickly as the upper rings (21). Application to the shredding of refuse and industrial waste. <IMAGE>

IPC 1-7

B02C 18/40

IPC 8 full level

B02C 18/14 (2006.01)

CPC (source: EP)

B02C 18/0084 (2013.01); B02C 18/142 (2013.01); B02C 2018/147 (2013.01)

Citation (search report)

• [Y] FR 732900 A 19320927 - BAMAG MEGUIN AG
• [Y] FR 2329939 A1 19770527 - GOERGEN FRITZ [CH]
• [Y] US 4081143 A 19780328 - JOHNSON ALBERT O, et al
• [A] FR 2396591 A1 19790202 - MOCO MASCH & APPARATEBAU [DE]
• [A] FR 1523467 A 19680503
• [A] DE 2731588 A1 19790125 - LINDEMANN MASCHFAB GMBH
• [A] DE 2014402 A1 19701015
• [A] US 3529782 A 19700922 - LIEBMAN ARNO J
• [A] GB 1454288 A 19761103 - METAL BOX CO LTD

Designated contracting state (EPC)

AT CH DE GB IT LI LU NL SE

DOCDB simple family (publication)

EP 0069721 A2 19830112; EP 0069721 A3 19830518; BE 893313 A 19820916; FR 2508344 A1 19821231

DOCDB simple family (application)

EP 82870035 A 19820623; BE 208186 A 19820526; FR 8112411 A 19810624