×

Simultaneously molded threaded port and plug

  • US 4,280,976 A
  • Filed: 04/18/1980
  • Issued: 07/28/1981
  • Est. Priority Date: 04/18/1980
  • Status: Expired due to Term
First Claim
Patent Images

1. The method of simultaneously molding a threaded port in a wall and a separate, threaded plug adapted for sealing said threaded port, which comprises:

  • defining first cavity means for receiving molding compound to form said wall, and second cavity means for receiving molding compound to form said threaded plug;

    inserting rotatable shaft means carrying external threads through said first cavity to define the threaded port, said shaft means terminating at the second cavity means;

    placing molding compound into said first and second cavity means for molding the wall and plug;

    forming a separable mechanical linkage between said end portion and plug molded in the second cavity means;

    rotating said shaft after hardening of the molding compound to withdraw it from the newly molded, threaded port and to rotate the molded, threaded plug into said threaded port for sealing thereof.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×