Holding device for cutting a toric lens
US5497683A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1994 |
| Grant date | Mar 12, 1996 |
| Priority date | — |
| Expiry date | Feb 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T279/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.