Vacuum chuck

Details Vacuum chuck Vacuum chuck

1978-03-24

1980-01-22

Whitehead, Harold D.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51216LP, 269 21, B24B 4106

Patent

active

041842928

ABSTRACT:
A vacuum chuck for use in lens grinding having a vertical bore extending downwardly into the block to join a through horizontal bore provided with a venturi, so that by blowing air through the venturi a vacuum is created in the vertical bore to secure the lens placed on top of the block.

REFERENCES:
patent: 2715304 (1955-08-01), Dix
patent: 2998256 (1961-08-01), Lipkins
patent: 3716307 (1973-02-01), Hansen
patent: 3794314 (1974-02-01), Coburn et al.
patent: 3912317 (1975-10-01), Ohnaka
patent: 3971170 (1976-07-01), Coburn et al.
patent: 4073602 (1978-02-01), Cagle

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