Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1984-02-24
1986-01-07
Whitehead, Harold D.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51235, B24B 4104
Patent
active
045626715
ABSTRACT:
A lens holding spindle for grinding machines is provided comprising two substantially cylindrical elements mounted concentrically one inside the other, one of the two elements forming the body of the spindle intended to be fixed to the grinding machine, the other element comprising, at one of its ends, a recess for receiving a metal block fixed to one face of a lens, the other face of which is to be ground; the body of the spindle is the inner cylindrical element which comprises an end portion which projects axially inside the recess of the external cylindrical element and which has an end face forming both a fixed reference and an axial bearing surface for the lens to be ground; the external cylindrical element is mounted for sliding on the inner cylindrial element; clamping means mounted on one of said two cylindrical elements for clamping the other of the two cylindrical elements.
REFERENCES:
patent: 1624658 (1927-04-01), Devine
patent: 1952212 (1934-03-01), McCabe
patent: 3079736 (1963-03-01), Kratt
patent: 3410031 (1968-11-01), Soong
Bouillon Serge
Cailloux Jean-Francois
Chevalier Christian
Essilor International "Compagnie Generale d'Optique"
Whitehead Harold D.
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