Turning – Pattern section
Patent
1994-02-04
1996-03-12
Rosenbaum, Mark
Turning
Pattern section
279 6, B23B 522, B23B 544
Patent
active
054976839
ABSTRACT:
A holding device for cutting a toric lens includes a chuck member which holds the lens workpiece, with a rotation and guide assembly provided such that an axis of the chuck member moves along a line perpendicular to the axis of rotation. The chuck member is held by a chuck support member, and the chuck support member includes guide ends which move along an inner periphery of a guide hole of a guide member. The guide hole has a center axis which is eccentric with respect to a rotation axis in a direction orthogonal to the rotation axis, such that as the guide ends of the chuck support member move along the inner periphery of the guide hole, the chuck member rotates while the chuck axis moves along a line which is orthogonal to the rotation axis.
REFERENCES:
patent: 3066560 (1962-12-01), Estephanio
patent: 4210039 (1980-07-01), Willemin
patent: 4884482 (1989-12-01), Council, Jr.
patent: 4947715 (1990-08-01), Council, Jr.
patent: 5195407 (1993-03-01), Takeno et al.
patent: 5309800 (1994-05-01), Yuhara
Hattori Kenshiro
Inada Koichi
Hansen Kenneth J.
Menicon Co. Ltd.
Rosenbaum Mark
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