Method And Apparatus For Manufacturing Contact Lens Moulds
AssigneeCooperVision International Holding Company, LP
InventorsGregg A. Dean, Colin Ball
Life of this patent
Estimating the term…
Abstract
A collet (230) for holding a contact lens mold half (240) during machining of a surface of the mold half (240) comprises a disc (235) having a face and defining: a central structure (250a), at the centre of the face, for receiving a head portion (240a) of the mold half (240), and an elongate recess (250b), in the face, for receiving a tail portion (240b) of the mold half (240), the elongate recess (250b) extending from the central structure (250a) along a radius of the disc (235).
Claims14
1-14. (canceled)
A collet for holding a contact lens mold half during machining of a surface of the mold half, the collet comprising a disc having a face and defining:
- a central structure, at the centre of the face, for receiving a head portion of the mold half, and
- a recess, in the face, for receiving a tail portion of the mold half, the recess extending from the central structure along a radius of the disc;
- wherein the recess is elongate and shaped and sized to receive substantially the entire length of the tail portion of the mold half.
Dependencies are inferred from the claim text.