Patents Assigned to Allied Record Company
  • Method and apparatus for injection molding data carrying elements
    Patent number: 4251479
    Abstract: A method and apparatus for injection molding styrene phonograph records and the like. Through use of special fixtures and the careful control of time, temperature and pressure during the molding process in accordance with the method of the invention, the height, width, angle and side wall configuration of the groove of monophonic, sterophonic or quadraphonic record masters can be precisely replicated in the molded records, thereby enabling high volume production of injection molded styrene records of superior quality.
    Type: Grant
    Filed: June 28, 1979
    Date of Patent: February 17, 1981
    Assignee: Allied Record Company
    Inventors: Adam Pecht, John F. Wegner