Frame system and manhole covering
US11873614B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 2019 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Dec 26, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F2005/028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A frame system for a manhole covering includes at least one first frame element and one second frame element, each including at least one first connecting surface and/or at least one second connecting surface. The first and second frame elements are connectable to one another in a friction-locked and/or formfitting manner along the opposing first or second connecting surfaces, wherein in the connected state of the first and second frame element at least one joining region is formed between the opposing first connecting surfaces or between the opposing second connecting surfaces. The joining region can be filled using a joining element in such a way that the joined connection of the frame elements is detachable and reproducible wherein the joining element comprises a hot melt adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.