(19)
(11) EP 2 171 629 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 B1)

(48) Corrigendum issued on:
06.06.2012 Bulletin 2012/23

(45) Mention of the grant of the patent:
02.05.2012 Bulletin 2012/18

(21) Application number: 08746243.8

(22) Date of filing: 18.04.2008
(51) International Patent Classification (IPC): 
G06F 19/00(2011.01)
B23H 7/26(2006.01)
 B23H 9/00(2006.01)
(86) International application number:
PCT/US2008/060789
(87) International publication number:
WO 2008/144141 (27.11.2008 Gazette 2008/48)

(54)

ELECTRICAL DISCHARGE MACHINE APPARATUS AND METHOD FOR REVERSE TAPER BORES

ELEKTRISCHE ENTLADUNGSMASCHINEN VORRICHTUNG FÜR BOHRUNGEN MIT UMGEKEHRTER VERJÜNGUNG, UND VERFAHREN ZUM BOHREN.

DISPOSITIF ET METHODE D'USINAGE PAR DÉCHARGE ÉLECTRIQUE POUR LA RÉALISATION D'ALÉSAGES CONIQUES INVERSÉS.

(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

(30) Priority: 17.05.2007 US 750011

(43) Date of publication of application:
07.04.2010 Bulletin 2010/14

(73) Proprietor: AA EDM Corporation Inc.
Ann Arbor, MI 48103 (US)

(72) Inventor:
  • MACGREGOR, John
    Ann Arbor, MI 48103 (US)

(74) Representative: Solf, Alexander 
Patentanwälte Dr. Solf & Zapf Candidplatz 15
81543 München
81543 München (DE)


(56) References cited: : 
EP-A2- 1 584 397
DE-U1- 20 120 252
US-A- 4 769 118
US-B1- 6 211 480
 WO-A1-92/17309
US-A- 3 783 225
US-A1- 2005 189 443
   
       
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).