Simultaneously molded threaded port and plug

Details Simultaneously molded threaded port and plug Simultaneously molded threaded port and plug

1980-04-18

1981-07-28

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Cutting and uniting cut parts

29416, 29418, 249 59, 264318, 264334, 425438, 425DIG59, B29D 100

Patent

active

042809762

ABSTRACT:
A simultaneously molded threaded port and plug may be produced by a mold which comprises a first cavity for receiving molding compound to form a wall, a second cavity for receiving molding compound to form the threaded plug, and rotatable shaft means carrying external thread forming grooves and extending through the first cavity to define the threaded port. The shaft means terminates at the second cavity, with an end portion of the shaft being shaped to form a separable mechanical linkage between the end portion and the plug molded in the second cavity means. The shaft is rotated after molding to withdraw it from the molded, threaded port, and to rotate the molded, threaded plug into the threaded port for sealing thereof.

REFERENCES:
patent: 3330006 (1967-07-01), Jenkins

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