Locking manhole insert

Details Locking manhole insert Locking manhole insert

1992-09-24

1994-07-12

Britts, Ramon S.

Road structure, process, or apparatus

Drain or gutter

404 4, 404 24, 404 25, 52 20, 52 21, E02D 2912

Patent

active

053282914

ABSTRACT:
A locking manhole insert to be placed under a conventional manhole cover to prevent unauthorized access to the manhole. The insert includes a plate-shaped disc with a plurality of locking radial arms mounted to its undersurface. The locking radial arms are securable in the extended position using a conventional padlock. The insert further includes apparatus for suspending equipment, such as pollution monitoring units, within the manhole opening.

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