Connector gasket for concrete structures

Details Connector gasket for concrete structures Connector gasket for concrete structures

2008-07-01

2008-07-01

Mayo, Tara L. (Department: 3671)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal for a pipe, conduit, or cable

C405S036000, C285S230000

Reexamination Certificate

active

11220052

ABSTRACT:
A manhole assembly for a manhole having generally cylindrical sidewalls defined between an outside surface and an inside surface separated by a wall thickness and having a wall opening communicating the outside and inside sidewall surfaces of the manhole for insertion of a mating pipe. The wall opening defines a peripheral surface relatively perpendicular to the outside and inside sidewall surfaces which receives a ring shaped elastomeric gasket. The gasket has a retaining ring whose location is precisely determined to allow the gasket to be obliquely inserted within the wall opening of the manhole and to be subsequently snap-fitted into position on the peripheral surface, whereby the gasket is securely retained in a locked-in position with respect to the wall opening in the sidewall of the manhole.

REFERENCES:
patent: 3866925 (1975-02-01), Maimstrom et al.
patent: 4215868 (1980-08-01), Skinner et al.
patent: 4614371 (1986-09-01), Bauder
patent: 4693482 (1987-09-01), Daigle et al.
patent: 6457725 (2002-10-01), Jones
patent: 6481927 (2002-11-01), Rhodes
patent: 6669405 (2003-12-01), Rhodes

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