Method and apparatus for lining manhole assemblies and the like
US5081802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1990 |
| Grant date | Jan 21, 1992 |
| Priority date | — |
| Expiry date | Feb 15, 2010 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C9/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Cast members are provided with a liner assembly to protect the cast material from corrosion. The liner assembly is formed of a plurality of curved liner sections having integral joining flanges. A resilient compressible gasket is arranged between opposing flanges and is provided with at least one flange receiving slot for receiving the flange of one of said liner sections to facilitate assembly thereof. Fastening means join the opposing flanges to compress the gasket and thereby provide a liquid-tight joint. Integral flanges are provided at the upper and lower ends of the liner sections to receive a sealant which is squeezed out of the seams formed by the mating sections when joined to protect the cast assembly from corrosion. The liner sections are formed of a material which is inert to the corrosive influences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.