(19)
(11) EP 4 090 496 A1

(12)

(43) Date of publication:
23.11.2022 Bulletin 2022/47

(21) Application number: 21707773.4

(22) Date of filing: 18.01.2021
(51) International Patent Classification (IPC): 
B24B 7/04(2006.01)
 B24B 27/00(2006.01)
(52) Cooperative Patent Classification (CPC):
B24B 7/04; B24B 27/0061; B24B 27/0076
(86) International application number:
PCT/IB2021/050340
(87) International publication number:
WO 2021/144771 (22.07.2021 Gazette 2021/29)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 17.01.2020 US 202062962255 P

(71) Applicant: L. Kellenberger & Co. AG
9008 St. Gallen (CH)

(72) Inventors:
  • GSCHWEND, Bernard
    9300 Wittenbach (CH)
  • EGETER, Michael
    8580 Amriswil (CH)
  • DOSSENA, Fabrizio
    9402 Mörschwil (CH)

(74) Representative: Mötteli-Mantelli, Novella 
Da Vinci Partners LLC Rathausgasse 1
9320 Arbon
9320 Arbon (CH)

   


(54) APPARATUS AND METHOD FOR GRINDING OF MATERIALS SUCH AS METAL COMPRISING A HANDLING SYSTEM ADAPTED TO AUTOMATICALLY EXCHANGE AND DRESS TOOLS