Screw threaded joint for continuous-profile tubes

Details Screw threaded joint for continuous-profile tubes Screw threaded joint for continuous-profile tubes

2006-03-21

2006-03-21

Hewitt, James M. (Department: 3679)

Pipe joints or couplings

Particular interface

Tapered

C285S334000, C285S390000

Reexamination Certificate

active

07014223

ABSTRACT:
A flush-type integral threaded joint with truncated-cone threads, with two scaling surfaces11′, 12′, 11″, 12″) set at the end of the threaded portions (7, 8), and with two annular scaling shoulders (5′, 6′, 5″, 6″). The two threaded portions (7, 8) of the male element (1) and female element (2), respectively, have the same value of conicity, and the two sealing surfaces (11′, 12′, 11″, 12″) are, in one case, conical or cylindrical, and in the other spherical. The threaded portion of each male and female element may have an end area with a thread that is not perfect.

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