Metal working – Method of mechanical manufacture – Assembling or joining
Reexamination Certificate
2003-08-11
2009-11-24
Hong, John C (Department: 3726)
Metal working
Method of mechanical manufacture
Assembling or joining
C277S314000
Reexamination Certificate
active
07621034
ABSTRACT:
A tubular joint including a conical male thread and a conical female thread. An annular housing is disposed close to a free end of the female element and is used to house a deformable sealing ring. The sealing ring is in sealed contact with the peripheral surface of the housing and with diminishing threads of the male thread and bears axially against a shoulder that faces the free end, thereby limiting the housing.
REFERENCES:
patent: 2380690 (1945-07-01), Graham
patent: 2960353 (1960-11-01), Woodling
patent: 4878285 (1989-11-01), Carstensen
patent: 4988127 (1991-01-01), Carstensen
patent: 6254017 (2001-07-01), Kuo
patent: 40 07 408 (1991-07-01), None
patent: 0 867 596 (1998-09-01), None
Hong John C
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sumitomo Metal Industries, Ltd
Vallourec Mannesmann Oil & Gas France
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