Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1976-07-26
1978-04-18
Ward, Jr., Robert S.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277DIG2, 285230, 285291, F16L 2102
Patent
active
040848280
ABSTRACT:
A thin-walled joint face liner ring providing a smooth and continuous face is applied to the bell or to both the bell and the spigot of concrete pipe. The outer end of the ring is formed as a reversely curved flange so that its edge enters and is buried in the concrete. Its inner end extends part way outward along the shoulder of the pipe and thence axially so that its edge also enters and is buried in the concrete. Each ring is applied by placing it on the usual joint face-forming portions of the pipe mold, casting the concrete against the ring and about its edges, and subsequently curing the concrete in place against the ring or rings. When used on the spigot face, it can be made to form the usual gasket groove at such end, and thereby permit use of a more simple mold structure.
REFERENCES:
patent: 2982569 (1961-05-01), Miller et al.
patent: 3135519 (1964-06-01), Ligon et al.
patent: 3415544 (1968-12-01), Hucks
patent: 3738689 (1973-06-01), Forni
patent: 3829135 (1974-08-01), Forni
patent: 3858912 (1975-01-01), Bower
patent: 3866925 (1975-02-01), Maimstrom et al.
Construction Products Corporation
Ward, Jr. Robert S.
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