Apparatus for grinding the screen panel of a cathode ray tube

Details Apparatus for grinding the screen panel of a cathode ray tube Apparatus for grinding the screen panel of a cathode ray tube

1995-08-11

1997-10-21

Morgan, Eileen P.

Abrading

Precision device or process - or with condition responsive...

With indicating

451 10, 451 11, 451 24, 451213, 451216, B24B 4900

Patent

active

056790546

ABSTRACT:
Disclosed is an apparatus for grinding the screen panel of a CRT. A jig pallet for holding the screen panel of a CRT is fixedly supported by a jig pallet support plate by means of a pivoting mechanism. The screen panel is fixedly mounted in the jig pallet by means of a plurality of fixing cylinders. A wheel-type grind felt device for grinding the surface of the screen panel is provided over the jig pallet. The rotational axis of the wheel-type grind felt device is parallel with the pivoting axis of the jig pallet. The wheel-type grind felt device contacts and grinds the portions of the surface of the screen panel in stepwise manner while the screen panel is pivoting about a pivot pin. A cooling fluid supply tube is provided for supplying a cooling liquid between the surface of the screen panel and the peripheral surface of the wheel-type grind felt device. The wheel-type grind felt device consists of a pair of rubber disks mounted on the shaft of a driven pulley with a space between them and a ring-shaped felt for covering the space.

REFERENCES:
patent: 2569005 (1951-09-01), Kindling
patent: 2994990 (1961-08-01), Wrobbel
patent: 3046702 (1962-07-01), Bretscher
patent: 3902282 (1975-09-01), Roscoe et al.
patent: 4907371 (1990-03-01), Shada et al.
patent: 5152707 (1992-10-01), Dougherty et al.

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