Pipe joint

Details Pipe joint Pipe joint

1983-07-26

1986-05-27

Callaghan, Thomas F.

Pipe joints or couplings

Particular interface

Tapered

285334, 285350, F16L 1500

Patent

active

045911959

ABSTRACT:
An improvement to the sealing ring of U.S. Pat. No. 4,085,951 is disclosed, wherein the sealing ring is of a special design including an in situ sealing flange generating corner, and the stepped thread pin and box members have been modified in the shoulder areas between the thread sections thereof to provide a pressure transmitting area for transmitting torque to the ring, and an undercut area to provide room for formation of the in situ sealing flange which extends beyond the faces of the improved ring.
With the improved design, the sealing ring is capable of retaining hot gases or liquids with a pressure differential across the sealed joint exceeding the yield pressure of the rubber or plastic of which the ring is made, in at least a given direction.

REFERENCES:
patent: 2926937 (1960-03-01), Parsons
patent: 3100656 (1963-08-01), MacArthur
patent: 3185501 (1965-05-01), Bowan et al.
patent: 3259404 (1966-07-01), Papenguth
patent: 4009893 (1977-03-01), Schatton et al.
patent: 4085951 (1978-04-01), Morris
patent: 4253687 (1981-03-01), Maples

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