(19)
(11) EP 1 074 346 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.04.2002 Bulletin 2002/15

(43) Date of publication A2:
07.02.2001 Bulletin 2001/06

(21) Application number: 00116146.2

(22) Date of filing: 31.07.2000
(51) International Patent Classification (IPC)7: B24D 7/06, B24D 7/10
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 06.08.1999 IT MO990039 U

(71) Applicant: Ficai, Giovanni
43044 Ozzano Taro (Parma) (IT)

(72) Inventor:
  • Ficai, Giovanni
    43044 Ozzano Taro (Parma) (IT)

(74) Representative: Modiano, Guido, Dr.-Ing. et al
Modiano Gardi Patents, Via Meravigli, 16
20123 Milano
20123 Milano (IT)

   


(54) Toothed abrasive wheel


(57) A toothed abrasive wheel (4) is designed for increasing the degree of aggressiveness on the surface to be worked and the degree of cooling and chip evacuation, and has an annular active band (TP) with patterns of teeth (5) arranged in series along broken or continuous spiral arcs which are concave in an inward direction in the two possible directions of rotation, with a tangential component; each series of teeth (5) having an irregular rhomboidal base is flanked by a pair of channels (6) which separates it from the contiguous series; air and chip evacuation occurs along the channels (6); the wheel is used in industrial coarse grinding and lapping of surfaces, particularly as a manual tool driven by an electric motor.






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