Load-bearing platform
US8997933B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 2011 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Jul 16, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01M31/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Tree stands are disclosed for providing an elevated standing location. The tree stand can include a support post, a seat rotatably coupled to the first end of the support post, and a platform rotatably coupled to the second end of the support post. The platform can comprise a plurality interconnected polygonal shapes defining a top standing surface. The platform can be a grating that has load bearing properties and that can be cast from a mold. The platform includes a perimeter wall, a surface portion, and one or more reinforcement walls. A height or thickness of the surface portion is less than a height or thickness of the perimeter wall and/or the reinforcement walls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.