Cover assembly for manholes and the like

Details Cover assembly for manholes and the like Cover assembly for manholes and the like

1994-08-04

1996-04-16

Neuder, William P.

Road structure, process, or apparatus

Pavement

Vault cover-closure

49386, 52 20, E02D 2914

Patent

active

055075908

ABSTRACT:
A cover assembly for manholes and the like has a hinged cover which is urged closed by gravity and open by an opposing bias force acting between the cover and cover base in such manner as to reduce the force required to open a relatively heavy cover whose weight exceeds the maximum single person lifting weight permitted by OSHA and union regulations to a value equal to or less than such maximum lifting weight. A manually releasable latch prevents uncontrolled closure of the cover by gravity in the event of failure of the bias force.

REFERENCES:
patent: 3455059 (1969-07-01), Evans, III

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