Sealing device for pipes

Details Sealing device for pipes Sealing device for pipes

1998-03-23

2000-07-18

Melius, Terry Lee

Pipe joints or couplings

Molded joint

Lining or cover molded to pipe end

285230, 277624, 277627, 277603, F16L 4700

Patent

active

060896183

ABSTRACT:
A sealing device for sealing an annular space between a socket and a spigot end introduced therein comprises a sealing ring (10) and an annular element (12) connected therewith and consisting of a non-elastic cellular plastic, for example styrene cellular plastic. The sealing device is intended to be moulded into the socket at the cylindrical inner surface thereof with the sealing ring (10) positioned adjacent the free end of the socket and the annular cellular plastic element (12) positioned axially inside the sealing ring. The annular element (12) consisting of non-elastic cellular plastic is formed with recesses (22) which are positioned at or in connection with the inner surface of the annular element for allowing a radial expansion of the inner surface of the annular element under the influence of the spigot end introduced into the socket.

REFERENCES:
patent: 2230725 (1941-02-01), Nathan
patent: 2615741 (1952-10-01), Nathan
patent: 3135519 (1964-06-01), Ligon et al.
patent: 3150876 (1964-09-01), Lafferty
patent: 3858912 (1975-01-01), Bower
patent: 4186931 (1980-02-01), Anderson
patent: 4288104 (1981-09-01), Nordin
patent: 4674756 (1987-06-01), Fallon et al.

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