Drainage inspection chambers

Details Drainage inspection chambers Drainage inspection chambers

1980-03-06

1982-08-31

Callaghan, Thomas F.

Pipe joints or couplings

With fluid pressure seal

Flexible lip

52 20, 285150, 285DIG2, 285DIG22, F16L 4100

Patent

active

043469213

ABSTRACT:
In a drainage inspection chamber of the kind having a manhole access and a base with at least one channel in the base extending between an inlet opening and an outlet opening, the base is formed from plastics material and has an integral side wall structure, circular openings in the side wall structure constituting the inlet and outlet openings. Separately formed socket members for receiving inlet and outlet pipes are located at each of the openings, each of the socket member being provided with a resilient sealing member for sealing with the outer surface of a pipe fitted into the socket member, the sealing member also serving simultaneously to seal the socket member with the internal surface of the inspection chamber.

REFERENCES:
patent: 3233775 (1966-02-01), Bozek
patent: 3630547 (1971-12-01), Hartshorn
patent: 3791678 (1974-02-01), De Putter
patent: 3913928 (1975-10-01), Yamaguchi
patent: 4112979 (1978-09-01), Widdicombe

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