Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1990-06-06
1992-04-07
Kisliuk, Bruce M.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51109R, 511311, B24B 500
Patent
active
051020998
ABSTRACT:
A disc polisher apparatus for the abrasive removal of surface scratches from a laser scanned digitally encoded storage disc, such that the presence of surface scratches could otherwise serve to deflect the optical scanning of the disc so as to impair the ability to read and retrieve the data stored. The apparatus includes rotating polishing pads which in association with an abrasive compound repair the damaging scratches. The disc rests upon a disc platform, having a biased shaft, and is positioned slightly above the polishing pads. A spring biased disc depression pad, attached to the cover of the apparatus, engages with the disc and a portion of the disc platform as the cover is being closed. The disc depression pad, in cooperation with the cover, serves to force the disc platform and disc downward, so that the disc engages in operational contact with the rotating polishing pads.
REFERENCES:
patent: 4179852 (1979-12-01), Barnett
patent: 4520470 (1985-05-01), d'Alayer de Costemore d'Are
patent: 4556433 (1985-12-01), Clausen
patent: 4561142 (1985-12-01), Mischenko et al.
patent: 4569098 (1986-02-01), Kawabe
patent: 4713856 (1987-12-01), Clausen
patent: 4783870 (1988-11-01), Yeung
Brown Kevin L.
Glicken Edward B.
Cruz Lawrence
Kisliuk Bruce M.
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