Adjustable manhole top

Details Adjustable manhole top Adjustable manhole top

E - Fixed Constructions

02

D

94/12

E02D 29/14 (2006.01)

Patent

CA 1287247

ABSTRACT OF THE DISCLOSURE An adjustable manhole top which can be readily raised up or down in minutes to correct problems when the ground around it heaves. A cylindrical sleeve with a plurality of spaced elongated shoulders extending longitudinally along an internal surface thereof, is adjustably seated about upwardly extending projections from a support rim. A lock, removably supported on the support rim, is provided with a height adjustment mechanism which adjustably mates with a corresponding mechanism on a surface of a corresponding shoulder to secure the sleeve at a desired height.

563959

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