(19)
(11) EP 0 611 600 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.01.1995 Bulletin 1995/04

(43) Date of publication A2:
24.08.1994 Bulletin 1994/34

(21) Application number: 94300976.1

(22) Date of filing: 10.02.1994
(51) International Patent Classification (IPC)5: B02C 18/14, B02C 18/18
(84) Designated Contracting States:
BE DE ES FR GB IT LU NL

(30) Priority: 19.02.1993 WO PCT/US93/01555
30.04.1993 US 98455

(71) Applicant: Kaczmarek, Al
Wood Dale, Illinois 60191 (US)

(72) Inventor:
  • Kaczmarek, Al
    Wood Dale, Illinois 60191 (US)

(74) Representative: Allden, Thomas Stanley et al
A.A. THORNTON & CO. Northumberland House 303-306 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)


(56) References cited: : 
   
       


    (54) Rotary comminuting device for small chunks


    (57) This invention relates to a comminuting device which processes small pieces of bulk materials, such as pieces of rubber tires, into crumb-sized particles. It is designed to operate at slow speeds, 50 - 350 rpm by having the work material move along the exterior peripheral surface of a rotating drum (72) cutting efficiencies are improved. This unique invention provides cutting teeth on the stator (70) and drum (9) each having limited rotational movement which permits greater efficiency for cutting multi-grade materials such as rubber tires having steel and material cord. Cutting blades can be rotated three times to expose unused cutting edges before replacement is required.






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