Method of manufacturing a plate having a plane main surface, met

Details Method of manufacturing a plate having a plane main surface, met Method of manufacturing a plate having a plane main surface, met

1993-06-03

1995-08-15

Lavinder, Jack W.

Abrading

Abrading process

Side face of disk

451 41, 451288, 451400, B24B 704, B24B 722

Patent

active

054414423

ABSTRACT:
Methods and device for manufacturing a plate with a plane main surface or with parallel main surfaces, whereby material is taken off from the edges of the plate and from the central portion of the plate alternately by means of polishing in order to obtain main surfaces having a convex, plane, or concave shape. Polishing is stopped after at least one transition from convex to concave or vice versa at the moment at which the main surface has a substantially plane shape or has substantially parallel main surfaces.

REFERENCES:
patent: 3924361 (1975-12-01), White et al.
patent: 4313284 (1982-02-01), Walsh
patent: 4593495 (1986-06-01), Kawakami
patent: 4606151 (1986-08-01), Heynacher
patent: 4831789 (1989-05-01), Herbin
patent: 4940507 (1990-07-01), Harbarger
patent: 5255474 (1993-10-01), Gawa

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