Pipe joint with earthquake-proof function

Details Pipe joint with earthquake-proof function Pipe joint with earthquake-proof function

2007-07-17

2007-07-17

Bochna, David (Department: 3679)

Pipe joints or couplings

Flexible joint, rigid members

Socketed packing type

C285S231000, C285S321000

Reexamination Certificate

active

10539744

ABSTRACT:
A pipe joint with earthquake-proof function is provided. A lock ring engages with an accommodating groove of a socket. A tapered surface converging toward the opening side of the socket is formed on at least one of a portion of the lock ring engaging the accommodating groove and a portion of the accommodating groove engaging the lock ring. When a disengagement prevention force in a pipe axial direction for preventing a spigot from being disengaged from the socket by the engagement is transmitted from an accommodating groove to the lock ring through the tapered surface, a line of action of a component force of the disengagement prevention force in a direction perpendicular to the tapered surface passes the opening side of the socket of a contacting point between a socket bottom end part of the lock ring and the outer periphery of the spigot along the outer surface of the spigot.

REFERENCES:
patent: 3712648 (1973-01-01), Clifford
patent: 4082321 (1978-04-01), Nakajima et al.
patent: 4097074 (1978-06-01), Nagao et al.
patent: 4116478 (1978-09-01), Yamaji et al.
patent: 5609368 (1997-03-01), Maki et al.
patent: 5229624 (1977-03-01), None
patent: 5229625 (1977-03-01), None
patent: 5334126 (1978-03-01), None
patent: 5458221 (1979-05-01), None
patent: 06-002791 (1994-01-01), None
patent: 2000-170968 (2000-06-01), None
patent: 2000-230680 (2000-08-01), None
patent: 2000-257772 (2000-09-01), None
patent: 2002-005359 (2002-01-01), None
patent: 2002-005360 (2002-01-01), None
patent: 2002-005361 (2002-01-01), None
patent: 2002-323181 (2002-11-01), None

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