Vented precipitation guarding manhole cover assemblies
US9605403B1 · kind B1 · utility
13Cited by
21References
16Claims
0Family size
Inventor
Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/149
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Vented precipitation guarding manhole cover assemblies include a manhole cover having a manhole cover protrusion. The manhole cover protrusion has a protrusion edge, a protrusion surface contiguous with and extending from the protrusion edge and a protrusion apex contiguous with the protrusion surface. A manhole cover vent opening extends through the manhole cover protrusion and the manhole cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.