Pipe coupling

Details Pipe coupling Pipe coupling

2007-01-11

2009-06-02

Dunwoody, Aaron M (Department: 3679)

Pipe joints or couplings

Flange

Clamped

C285S419000, C285S420000

Reexamination Certificate

active

07540540

ABSTRACT:
A pipe coupling inc1udes a pair of half members which have a half-ring shape on the x-y plane and a thickness along the z axis, wherein the half member includes a first end on which a circumferential groove is disposed, the circumferential groove including a first groove surface and a second groove surface which are inclined over the x-y plane; and a second end on which a circumferential protrusion is disposed, the circumferential protrusion including a first protrusion surface and a second protrusion surface which are inclined over the x-y plane, wherein the first groove surface and the second groove surface are inclined over the x-z plane in the same angle and direction as the first protrusion surface and the second protrusion surface.

REFERENCES:
patent: 1913030 (1933-06-01), Hux
patent: 1938974 (1933-12-01), Oldberg
patent: 2009744 (1935-07-01), Pfefferle
patent: 2739018 (1956-03-01), Collett
patent: 4429907 (1984-02-01), Timmons
patent: 4768813 (1988-09-01), Timmons
patent: 2003/0178850 (2003-09-01), Dole et al.
patent: 2004/0036291 (2004-02-01), Dole

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