Pipe joint

Details Pipe joint Pipe joint

2004-12-03

2009-08-11

Hewitt, James M (Department: 3679)

Pipe joints or couplings

Essential catch

Resilient ring

C285S308000, C285S317000, C285S319000

Reexamination Certificate

active

07571939

ABSTRACT:
A pipe joint includes a socket, a plug, a retaining unit for preventing the plug from being drawn out from the socket, a seal ring arranged at an inner periphery of the socket and a hold ring arranged at the inner periphery of the socket for preventing the seal ring from being moved. A projected portion is formed at a position of the inner periphery of the socket for attaching the hold ring, and the hold ring includes a notched portion or a recess portion for engaging with the projected portion, and a projected portion projected in a direction of an inserting port of the plug, and the plug includes a ring-like projected portion for engaging with the retaining unit, and a recess portion or a flat portion provided at the ring-like projected portion to engage with the projected portion of the hold ring.

REFERENCES:
patent: 3326580 (1967-06-01), Munier et al.
patent: 4632436 (1986-12-01), Kimura
patent: 4801158 (1989-01-01), Gomi
patent: 5113571 (1992-05-01), Manska
patent: 5290974 (1994-03-01), Douglas et al.
patent: 5575512 (1996-11-01), Umezawa
patent: 5779019 (1998-07-01), Grosspietsch et al.
patent: 5860677 (1999-01-01), Martins et al.
patent: 5979946 (1999-11-01), Petersen et al.
patent: 6294733 (2001-09-01), Gibbons et al.
patent: 6474698 (2002-11-01), Dobler et al.
patent: 7387318 (2008-06-01), Yoshida
patent: 2004/0178629 (2004-09-01), Yoshida
patent: 2004/0183300 (2004-09-01), Iwasaki et al.
patent: 2002-5375 (2002-01-01), None
patent: 2002-276878 (2002-09-01), None
patent: 2003-21287 (2003-01-01), None
patent: 2003-232483 (2003-08-01), None
Korean Office Action dated Nov. 17, 2006 with an English translation.

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