Traffic-compatible vented precipitation guarding manhole cover assemblies
US11118323B1 · kind B1 · utility
3Cited by
58References
14Claims
0Family size
Inventor
Key dates
| Filing date | Jun 5, 2017 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Jun 5, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2999/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.