Plug retainer

Details Plug retainer Plug retainer

1989-04-13

1991-01-08

Bryant, III, James E.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

138 90, 411 55, F16L 3510, F16L 5518

Patent

active

049827634

ABSTRACT:
A plug retainer for a tube plug. The plug head and inboard end of the plug are captured by a locking cup and cap screw. The locking cup is threadably engaged in the open end of the tube plug. The cap screw shank extends through a bore in the locking cup and is threadably engaged with the mandrel in the tube plug. Compression rings on the locking cup and cap screw seal the locking cup to the tube plug and the cap screw to the locking cup to prevent leakage. The locking cup is crimped on the cap screw by the use of flutes on the cap screw head.

REFERENCES:
patent: 73439 (1868-01-01), Copeland
patent: 1772063 (1930-08-01), Zifferer
patent: 1898087 (1933-02-01), Fullman
patent: 4091841 (1978-05-01), Beneker et al.
patent: 4438784 (1984-03-01), Bobichon et al.
patent: 4518292 (1985-05-01), Calandra
patent: 4579491 (1986-04-01), Kull
patent: 4787420 (1988-11-01), Wilhelm

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