(19)
(11) EP 0 510 828 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.03.1993 Bulletin 1993/09

(43) Date of publication A2:
28.10.1992 Bulletin 1992/44

(21) Application number: 92303049.8

(22) Date of filing: 07.04.1992
(51) International Patent Classification (IPC)5: B24B 41/04, B24B 13/00, B24B 55/02
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 25.04.1991 US 691364

(71) Applicant: Coburn Optical Industries, Inc.
Muskogee Oklahoma 74402-0627 (US)

(72) Inventor:
  • Hill, Phillip D.
    Muskogee, Oklahoma 74403 (US)

(74) Representative: Jenkins, Peter David et al
PAGE WHITE & FARRER 54 Doughty Street
London WC1N 2LS
London WC1N 2LS (GB)


(56) References cited: : 
   
       


    (54) Apparatus for cutting and shaping material


    (57) Apparatus for cutting and shaping material which includes at least one bearing arrangement (15). The bearing arrangement comprising:
    • a hollow sleeve member (11);
    • a rotatable shaft (12) disposed in the hollow sleeve member;
    • a bearing race assembly (15) disposed between the hollow sleeve member and the rotatable shaft to facilitate the relative rotation therebetween; and
    • an end cap (13) disposed to close off the hollow sleeve member and enclose the bearing arrangement.

    Fluid is injected into the internal environment of the hollow sleeve member and caused to flow, at least in part, between the components and out of the bearing arrangement so as to prevent the ingress of unwanted material into the arrangement.






    Search report