Flare-shaped end structure for tube

Details Flare-shaped end structure for tube Flare-shaped end structure for tube

2005-01-25

2009-10-13

Dunwoody, Aaron M (Department: 3679)

Pipe joints or couplings

Particular interface

Tapered

C285S246000, C285S386000

Reexamination Certificate

active

07600792

ABSTRACT:
A flared end structure formed by processing an end part of a metal tube which is pressed against a seat formed in a member by tightening a coupling nut to the member. The flared end structure has a joining end part to be pressed against the seat of the member, and a curved part continuous with the joining end part. The curved part has an outer surface having a curved area, and a concave inner surface having a bottom edge. The curved area of the outer surface has a radius of curvature smaller than the wall thickness of the metal tube.

REFERENCES:
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patent: 0 997 677 (2000-05-01), None
patent: 1 236 946 (2002-09-01), None
patent: 2001-141141 (2001-05-01), None
patent: 2002-286177 (2002-10-01), None
Patent Abstract of Japan of JP 2002-286177 A Dated Oct. 3, 2002.
Patent Abstract of Japan of JP 2001-141141 A Dated May 25, 2001.

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