Flared screw fitting

Details Flared screw fitting Flared screw fitting

2007-04-10

2011-10-11

Dunwoody, Aaron (Department: 3679)

Pipe joints or couplings

Particular interface

Tapered

C285S332100, C285S332200

Reexamination Certificate

active

08033577

ABSTRACT:
A flared screw fitting has a pipe expanded in an end section into a tulip flare. A connecting piece has a conical stop face situated on an end section, which is joined in the direction of a forward front face of the connecting piece by a groove. An internal mantle surface of a union element contacts an external mantle surface of the tulip flare in an area whose smallest diameter is larger than the smallest diameter of the stop face of the connecting piece. The union element may be provided with an external threaded section which works together with an internal threaded section of the connecting piece.

REFERENCES:
patent: 406060 (1889-07-01), Potts
patent: 2381829 (1945-08-01), Livers
patent: 2444622 (1948-07-01), Wolfram
patent: 2453813 (1948-11-01), Prince
patent: 3265413 (1966-08-01), Currie
patent: 3294425 (1966-12-01), Franck
patent: 5271647 (1993-12-01), Usui
patent: 5354107 (1994-10-01), Takikawa
patent: 5887912 (1999-03-01), Nakamura
patent: 2004/0036288 (2004-02-01), Wosik
patent: 35 43 539 (1986-08-01), None

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