(19)
(11) EP 0 270 117 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.06.1989 Bulletin 1989/26

(43) Date of publication A2:
08.06.1988 Bulletin 1988/23

(21) Application number: 87117908.1

(22) Date of filing: 03.12.1987
(51) International Patent Classification (IPC)4: B24B 13/01, B24B 45/00
(84) Designated Contracting States:
AT BE CH DE ES FR GB GR IT LI LU NL SE

(30) Priority: 03.12.1986 US 937251

(71) Applicant: COBURN OPTICAL INDUSTRIES, INC.
Tulsa Oklahoma 74146 (US)

(72) Inventor:
  • Gray, Roy
    Muskogee Oklahoma (US)

(74) Representative: Schmidt-Evers, Jürgen, Dipl.-Ing. et al
Patentanwälte Mitscherlich & Partner, Postfach 33 06 09
80066 München
80066 München (DE)


(56) References cited: : 
   
       


    (54) Quick-change lens tool


    (57) A lens grinding tool having a cylindrical shank and a radial shoulder is secured to the shaft of a motor for rapidly rotating the tool, by means of a drawbar extending the length of the shaft and threaded into an axial threaded bore in the cylindrical shank. The location of the tool is precisely fixed by means of ring-shaped shims adapted for placement about the cylindrical shank of the tool between the shoulder and either a mating surface on the shaft or intermediate means for securing the tool to the shaft.







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