Road structure – process – or apparatus – Pavement – Vault cover-closure
Reexamination Certificate
2008-03-06
2009-06-02
Addie, Raymond W (Department: 3671)
Road structure, process, or apparatus
Pavement
Vault cover-closure
C404S026000, C052S019000
Reexamination Certificate
active
07540683
ABSTRACT:
Provided herein are covers useful for covering the open end of an access conduit that may contain fluid control equipment. In one embodiment, a cover according to the invention comprises a disc-shaped base portion having a top surface and a bottom surface, with a plurality of groups of stability tangs attached to its bottom surface. A cover as provided herein is readily adaptable to fit a large number of conduit boxes, valve boxes and the like which are presently in common use.
REFERENCES:
patent: 2497827 (1950-02-01), Trafton
patent: 3674149 (1972-07-01), Donalson
patent: 2007/0164030 (2007-07-01), Kearby et al.
Addie Raymond W
Whewell Chris
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