Manhole base assembly with internal liner and method of manufacturing same
US10428512B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2019 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jan 10, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F5/025
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A manhole base assembly and a method for making the same employ a non-cylindrical, low-volume concrete base that is fully lined to protect the concrete against chemical and physical attack while in service. This lined concrete manhole base assembly may be readily produced using a modular manhole form assembly which can be configured for a wide variety of geometrical configurations compatible with, e.g., varying pipe angles, elevations and sizes. The form assembly is configurable to provide any desired angle and elevation for the pipe apertures to interface with various underground systems, and can be formed on-site to facilitate compatibility with existing structures. The assembly provides for flexible, modular construction of a wide variety of lined manhole base assemblies at minimal cost, reduced concrete consumption and reduced operational complexity. The modular nature of the production form assembly also facilitates reduced inventory requirements when various manhole base assembly geometries are needed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.