Patents Assigned to Dinamode Corporation
  • Injection molding apparatus
    Patent number: 4069003
    Abstract: A method and apparatus for the injection molding of plastics wherein the sprue bushing is provided with a plurality of grooves in its bore as contrasted with the conventional sprue bushings having smooth bores. The sprue formed is complementarily ribbed and these irregular surfaces speed cooling of the sprue and facilitate manual handling thereof.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: January 17, 1978
    Assignee: Dinamode Corporation
    Inventor: Ronald L. Cecchi