Block for reversibly blocking the bore of a pipe

Details Block for reversibly blocking the bore of a pipe Block for reversibly blocking the bore of a pipe

1991-11-22

1993-07-20

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

137 1, F16L 5518

Patent

active

052284760

ABSTRACT:
A pipe block for reversibly blocking the bore of a pipe comprises a body 2 having a shaft 3,4, a plurality, in this case three, spaced apart annular flanges 5 extending from the shaft to form a close fit with the internal wall 31 of the pipe 30 and structure in the form of a funnel 8 attached to the shaft for guiding the threaded end 23 of a rod 20 into an internally threaded bore 6 of the shaft.

REFERENCES:
patent: 2107259 (1938-02-01), Hazel
patent: 2390461 (1945-12-01), Racz
patent: 3032069 (1962-05-01), Ficklin
patent: 3358869 (1967-12-01), Palmer et al.
patent: 3889714 (1975-06-01), Wilger et al.
patent: 4237937 (1980-12-01), Healy
patent: 4434816 (1984-03-01), Di Giovanni et al.
patent: 4462430 (1984-07-01), Anthony et al.
patent: 4470946 (1984-09-01), Vassalotti et al.
patent: 4531550 (1985-07-01), Gartner
patent: 4869281 (1989-09-01), Rockower et al.

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