Manhole seal construction

Details Manhole seal construction Manhole seal construction

1984-06-25

1986-09-02

Pate, III, William F.

Static structures (e.g., buildings)

With entrance for persons or objects in horizontal or...

With additional enclosure structure; e.g., manhole

404 25, 285226, E02D 2914

Patent

active

046087877

ABSTRACT:
A manhole seal construction adapted to engage the outer surface of the manhole frame and the chimney to seal the corbel joint from the outside and prevent leakage of water and entry of foreign material into the joint and manhole. A resilient ring having a hook-like upper section is engaged with the outwardly extending flange on the manhole frame, and the ring has a thin, stretchable central section which extends across the corbel joint. The lower portion of the ring terminates in a lower section having a series of internal ribs that seal against the chimney and having an outer circumferential groove to receive a clamping band. To provide additional sealing, an annular sealing gasket is bonded to the internal shoulder on the manhole frame and the manhole cover seats on the gasket to prevent leakage from the street into the manhole through the joint between the cover and the frame.

REFERENCES:
patent: 1940924 (1933-12-01), Taylor
patent: 3629981 (1971-12-01), McCaffery
patent: 4101236 (1978-07-01), Meyer
patent: 4305679 (1981-12-01), Modi
patent: 4449715 (1984-05-01), Gagas
patent: 4469467 (1984-09-01), Odill et al.
patent: 4475845 (1982-10-01), Odill et al.

Affiliated with

Also associated with

Rating

Manhole seal construction does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Manhole seal construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manhole seal construction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1091058