Road structure – process – or apparatus – Pavement – Vault cover-closure
Reexamination Certificate
2007-12-04
2007-12-04
Addie, Raymond W. (Department: 3671)
Road structure, process, or apparatus
Pavement
Vault cover-closure
C052S019000
Reexamination Certificate
active
11526888
ABSTRACT:
A temporary cover for manholes to provide a platform for maintenance workers when operating valves of underground utility systems. The cover comprising a circular outer rim dimensioned to fit into a manhole opening, a pair of parallel and spaced apart rods extending from the outer rim to its center, a valve key receiving and positioning assembly movable along the rods, and a meshed framework covering an area bordered by the circular rim, leaving an area between the two rods. The assembly comprises a ring and two diametrically opposite sleeves exteriorly attached to the ring for receiving the rods. A valve key can be inserted into the manhole through the ring. The meshed framework serves as a platform to support a person and defines a plurality of openings facilitating viewing into the manhole after the cover is placed thereon.
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Addie Raymond W.
Patel & Alumit, PC.
Tarver Edwin
Ung Tj
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