Expansion joint and seal for sewer pipe

Details Expansion joint and seal for sewer pipe Expansion joint and seal for sewer pipe

1976-08-27

1978-02-28

Callaghan, Thomas F.

Pipe joints or couplings

Flexible joint, rigid members

Concrete, clay, or masonry pipe

285236, 285397, F16L 4900

Patent

active

040762831

ABSTRACT:
An Expansion Joint and Seal for Pipe includes an inner or outer seal for such joint, with a suitable sealing means sufficiently flexible to enable expansion of the joint while maintaining desired seal between the two joints.

REFERENCES:
patent: 603222 (1898-04-01), McLean
patent: 1829236 (1931-10-01), Perkins
patent: 2144419 (1939-01-01), Slocumb
patent: 2765153 (1956-10-01), Gielow et al.
patent: 3016161 (1962-01-01), Peplin
patent: 3070130 (1962-12-01), Risley
patent: 3114568 (1963-12-01), Buono
patent: 3669471 (1972-06-01), Fetish, Jr.
patent: 3680896 (1972-08-01), Cupit
patent: 3729939 (1973-05-01), Shimizu

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