Road structure – process – or apparatus – Pavement – Vault cover-closure
Patent
1989-06-14
1990-11-13
Massie, IV, Jerome W.
Road structure, process, or apparatus
Pavement
Vault cover-closure
52 20, E02D 2914
Patent
active
049697714
ABSTRACT:
A new manhole cover support and its processes of manufacture and use are shown. Such cover supports are used to raise the effective grade of the existing manhole cover as before road resurfacing. The cover supports are mounted upon an existing manhole cover receiving structure which has an upwardly-extending shoulder surface and a sill therebelow for accommodating such cover. The new cover support comprises basically an expandable body and a flexible, compressible synthetic or natural resin-containing retention component. The body has a seat with a lateral keeper for the manhole cover, a base with an outer wall that is reactable against said shoulder surface, and an expander for the base and seat which provides at least one gap in the base and seat. The retention component is disposed between the outer wall of the base and the shoulder surface; it interacts with expansion of the base to enhance substantially the normal frictional grip between the body and the receiving structure. It should not be less than 8-9 mils nor more than about 400-600 mils thick. Advantageously, the retention component is deposited on the outer surface of the base as a curable liquid and the resulting deposit is cured to a resident adhering mass. The receiving structure can be an existing manhole cover frame or previously-installed cover support. Some embodiments of the cover support can be adjusted as to elevation; the bodies of some are one piece and others are segmented into a plurality of connected segments.
REFERENCES:
patent: 1908909 (1933-05-01), Manz
patent: 3773428 (1973-11-01), Bowman
patent: 4440407 (1984-04-01), Gagas
patent: 4582450 (1986-04-01), Neil
patent: 4828274 (1989-05-01), Stannard
patent: 4834574 (1989-05-01), Bowman
One page from Spec. No. 715-13, N.Y. State Dept. of Transportation, Albany, N.Y. entitled "715-13 Prefabricated Adjustment Rings and Frames for Drainage Units and Manholes"-published prior to 1983.
Massie IV Jerome W.
Smith Matthew
LandOfFree
Manhole cover support having enhanced grip 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 cover support having enhanced grip, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Manhole cover support having enhanced grip will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-773388