Flowline clamp connector

Pipe joints or couplings – Packed – Flanged pipe

Reexamination Certificate

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Details

C285S917000, C277S609000

Reexamination Certificate

active

11013486

ABSTRACT:
A flowline connection assembly connects first and second tubular members to each other. Each tubular member has an external flange on its end. A conical recess is formed in the bore at the end of each of the tubular members. A metal ring has a pair of legs extending in opposite axial directions, each of the legs having a conical outer surface that engages one of the conical recesses. Each ring has an elastomeric seal that seals the recess. A clamp has cam surfaces that engage the flanges and pull the tubular members axially toward each other.

REFERENCES:
patent: 2766999 (1956-10-01), Watts et al.
patent: 3403931 (1968-10-01), Crain et al.
patent: 3554581 (1971-01-01), Mason et al.
patent: 3680188 (1972-08-01), Mason et al.
patent: 4218080 (1980-08-01), Kendrick
patent: 6290237 (2001-09-01), Graupner
Two-pages of Grayloc Products, Houston, Texas 77252 showing Grayloc Connectors in Extreme Service.
One page showing 4″ Halliburton Big Inch Clamp Connection.

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