Pipe joints or couplings – Movable jaw
Patent
1994-01-24
1995-02-28
Arola, Dave W.
Pipe joints or couplings
Movable jaw
285374, F16L 2106
Patent
active
053931076
ABSTRACT:
The spigot-and-socket joint which is secured against sliding is designated to connect the spigot end (3) of a pipe which can be slid into the socket end (2) of another pipe, with radial play existing. In the socket end there are arranged a sealing ring (8) and a separate clamping ring (14) comprising a plurality of circumferentially extending, spaced clamping segments (15) having a spherically convex outer surface (17) and, on an inner surface, a tooth system (19) which, in the presence of axial forces, presses radially onto the spigot end (3) as the spherically convex surface (17) cooperates with a pipe socket's inner surface (18) which tapers conically towards the end. An elastomeric support member (20), which can be fixed in its position at the socket front end and supports the same, is provided on the clamping ring (14). A configuration, which ensures proper retention is obtained when a steel ring (28), which increases the flexural strength of the connecting portion (24), is associated with the support member's thicker annular disk-shaped portion (23), which bears on the socket front face (22), with the portion (24) connecting with the clamping ring (14) issuing from the support member. Particularly in the case of increased rated widths, the clamping ring (14) is conveniently provided with a circumferential recess for accommodating a non-flexing support ring (31) which is preferably made from steel.
REFERENCES:
patent: 4805932 (1989-02-01), Imhof et al.
patent: 5100183 (1992-03-01), Montesi et al.
patent: 5297824 (1994-03-01), Imhof et al.
Arola Dave W.
Eisenwerke Fried Wilh. Duker GmbH & Co.
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