Thermoplastic thread protector for internally threaded pipe

Details Thermoplastic thread protector for internally threaded pipe Thermoplastic thread protector for internally threaded pipe

1975-09-05

1977-05-03

Aegerter, Richard E.

Pipes and tubular conduits

End protectors

Threaded

B65D 5900, B65D 5904

Patent

active

040208745

ABSTRACT:
A thermoplastic thread protector is provided for use in protecting internal threads of a pipe or coupling, the protector comprising a tapered shell having threads thereon and an outer flange which rest on the end of the pipe, and a tapered expansion ring designed to expand the shell into locking contact with the pipe, the shell and ring being interlocked through a rim around one end of the ring and a lip around the other end so that the protector must be unscrewed as a unit from the pipe.

REFERENCES:
patent: 2022189 (1935-11-01), Engstrom
patent: 2121436 (1938-06-01), Lytle
patent: 2893437 (1959-07-01), Rickard
patent: 3056427 (1962-10-01), Higgins
patent: 3073470 (1963-01-01), Greene
patent: 3578200 (1971-05-01), Hetzer
patent: 3964339 (1976-06-01), Antonio et al.

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