| 主权项 |
1. A repair bracket attached to a manhole cover and to a manhole base, the repair bracket providing a substitute for one or more broken anchoring tabs of the base, the base including an inner wall surrounding a central passage through the base, the repair bracket comprising:
an expansible bracket having a peripheral edge following the central passage contour but having outer width dimensions smaller than the central passage so the expansible bracket can pass into the manhole base and be positioned inward of the inner wall, the expansible bracket further including,
(i) a central manhole access passage through the expansible bracket that permits access into the manhole;(ii) threaded holes transversely through the expansible bracket and located at positions corresponding to positions of threaded holes in unbroken anchoring tabs of the base, the threaded holes having threaded bolts connecting the expansible bracket to a manhole cover by extending through the cover and into the threaded holes when the expansible bracket is in an expanded position; and(iii) expansible actuators mounted to the expansible bracket and capable of moving a part of the expansible bracket outward into engagement against the inner wall of the base or a sleeve or casing attached to the base. |
