Traffic-compatible vented precipitation guarding manhole cover assemblies

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United States of America Patent

PATENT NO 11118323
SERIAL NO

15613392

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Abstract

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Traffic-compatible vented precipitation guarding manhole cover assemblies may include a manhole cover having an exterior manhole cover surface and an interior manhole cover surface. At least one opening may extend through the manhole cover from the interior manhole cover surface to the exterior manhole cover surface. A flexible, resilient extension conduit having elastic recoil memory may extend from the exterior manhole cover surface at the at least one opening.

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Patent Owner(s)

Patent OwnerAddress
PUTNAM DAVIDSAMMAMISH WA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Putnam, David Calhoun, US 28 794

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