Internal expansion coupling device

Details Internal expansion coupling device Internal expansion coupling device

1989-04-10

1990-05-22

Callaghan, Thomas F.

Pipe joints or couplings

With fluid pressure seal

Expansible internal sleeve-type gasket

285158, 285370, F16L 2102

Patent

active

049271890

ABSTRACT:
This invention relates to an internal expansion coupling, having particular utility in joining together two tubular members or pipes aligned in end-to-end relationship. The device hereof comprises

REFERENCES:
patent: 2303927 (1942-12-01), Fogg
patent: 3141687 (1964-07-01), Broberg et al.
patent: 3269754 (1966-08-01), Bertling et al.
patent: 3394951 (1968-07-01), Crivello
patent: 3514135 (1970-05-01), Cooper
patent: 4193173 (1980-03-01), Lorenz
patent: 4216981 (1980-08-01), Jensen
patent: 4346922 (1982-08-01), Ohtsuga et al.
patent: 4469467 (1984-09-01), Odill et al.
patent: 4478434 (1984-10-01), Little
patent: 4491350 (1985-01-01), Wolf et al.
patent: 4685704 (1987-08-01), Kolar
Brochure, entitlted "PSX" by Press Seal Gasket Corporation (2 pages), date unknown.

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