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US 6,663,481 B2Granted
Method of improving the accuracy of a beveling operation applied to a spectacle lens, and a corresponding beveling tool
AssigneeEssilor International (Compagnie Generale d'Optique)
InventorMichel Nauche
Life of this patent
Estimating the term…
Abstract
A beveling operation is applied to a spectacle lens to blunt the sharp edges of its contour. Compensation means having a capacity for elastic deformation are operative between an active periphery of a beveling tool and its support shaft during the beveling operation. Applications include numerically controlled grinding machines.
Claims20
A tool for beveling spectacle lenses, the tool comprising:
- a hub structured and arranged to be fitted to a support shaft,
- at least one working rim rotatable with said hub, and
- compensation means having a capacity for elastic deformation between an active periphery of said working rim and said hub, said active periphery extending along a single frustoconical facet of said rim.
A tool for beveling spectacle lenses, the tool comprising:
- a hub structured and arranged to be fitted to a support shaft;
- at least one working rim rotatable with said hub;
- and
- a compensation element having a capacity for elastic deformation between an active periphery of the working rim and the hub,
- wherein said working rim is associated with abutment means from which the rim is separated by a clearance when at rest.
2 more elements
Dependencies are inferred from the claim text.