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US 6,555,029 B1Granted
Arbor for lathing a lens
AssigneeBausch & Lomb Incorporated
InventorsDominic V. Ruscio, Richard J. Wrue
Life of this patent
Estimating the term…
Abstract
An arbor for lathe cutting lenses, especially contact lenses, from a blank, is designed for the mounting of a lens mold with a cast lens blank therein during lathing of the lens blank. The arbor is made in a manner to ensure the lens mold is axially aligned with the arbor. The arbor can be reused for lathe cutting of multiple lens blanks retained in their respective lens molds.
Claims12
A method comprising:
- providing a lens mold, said lens mold including a lens-forming molding surface and an opposed non-molding surface, and placing a liquid or pliable solid material between the opposed surface of the lens mold and an end of an arbor;
- moving the lens mold and the arbor towards one another while maintaining axial alignment therebetween, whereby said material is pressed between and contacts a surface of the lens mold and a surface of the arbor end and conforms to said surfaces;
- hardening said material to form a hardened replica of the lens mold surface contacted by said material;
- and
- separating the arbor with the hardened material attached thereto from the lens mold.
2 more elements
Dependencies are inferred from the claim text.