Patents Assigned to Ocutech
  • Patent number: 4840754
    Abstract: A method and apparatus for molding articles such as ophthalmic devices to provide high surface smoothness without the formation of flock anywhere on the molded articles. A predetermined quantity of moldable material is arranged between spaced apart molding surfaces between which as an outer boundary a meniscus is formed. The configuration of the meniscus is controlled as by moving the molding surfaces toward each other to produce convex rounding of the moldable material forming the meniscus. Heating of the molds is controlled to accelerate the polymerization of the moldable material. The molding surface are moved when the moldable material attains a predetermined gel state.
    Type: Grant
    Filed: November 9, 1987
    Date of Patent: June 20, 1989
    Assignee: Ocutech
    Inventor: Harry C. Morgan