System for tinting contact lenses
December 27, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTechnique for producing a pre-distorted design format for use in transfer printing Contact lens marking fixture Hydrophilic lens tinting and coloring apparatus Screenable paste for use as a barrier layer on a substrate during maskless cladding Tubular goods joint Method for removing solids from substrates and preventing solids build-up thereon Method of forming iris variegation patterns on contact lenses Patent #: 4719657 InventorAssigneeApplicationNo. 289939 filed on 12/27/1988US Classes:101/44, Feeding or delivering8/507, Contact lens101/407.1WORK SUPPORTING MEMBERSExaminersPrimary: Crowder, Clifford D.Attorney, Agent or FirmForeign Patent References
International ClassB41F 017/00Foreign Application Priority Data1986-09-16 ILAbstractA system for tinting contact lenses includes a transfer-pad printer adapted to pick up a pattern from an inked printing block and transfer the pattern to a soaked contact lens. A plurality of lens mounts, each adapted to fixedly hold a soaked lens in a defined position on a convexly curved top surface of the lens mount, are provided with reference means on their respective top surfaces to facilitate accurate placing of a soaked lens in the defined position on each lens mount prior to the pattern transfer from the transfer pad to the lens. The radius of curvature of the convexly curved top surface of each lens mount is slightly smaller than the radius of curvature of the base curve of a soaked lens placed on the lens mount to facilitate shrinking-on of the back surface of the soaked lens onto the top surface of the lens mount. | |
