Reinforced manhole cover gasket
US12320089B2 · kind B2 · utility
0Cited by
49References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2021 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Sep 6, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D29/149
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A reinforced gasket for sealing a manhole, the gasket comprising a reinforcement ring having an upper surface and a generally planar lower surface; and a sealing assembly comprising a first ring and a second ring with an intermediate member extending between the first ring and the second ring, the intermediate member defining a contact surface; wherein the reinforcement ring is disposed between the first ring and the second ring of the sealing assembly such that the upper surface of the reinforcement ring is in contact with the contact surface of the seal ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.