Support structure of a cover
US10428488B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Aug 22, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2300/0031
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a support structure of a cover of a structure capable of being inserted into the ground, for example of a shaft or a channel, wherein the cover (10) comprises a traversable surface (11) and the support structure (20) extends downwards under said cover into the structure and comprises beam-shaped supports (21-23) such that their under support side (24) facing away from the surface (11) experiences a tensile stress when the surface (11) is loaded. The invention is further characterized in that between two areas (A, A′) a thickness (D) of the carriers with minimum tensile stress is configured substantially symmetrically in an increasing manner up to a maximum value and then, in turn, in a decreasing manner to form a ball shape when viewing the cover from below.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.