Block out chair system used to make a block out or a pass-through in a concrete slab
US11346116B1 · kind B1 · utility
0Cited by
12References
2Claims
0Family size
Inventors
Key dates
| Filing date | Jan 28, 2022 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jan 28, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/185
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A block out chair system that is used to make a block out for a railing or to make a pass-through in a concrete slab. the block out chair system is a circular flat base that defines a circular aperture within the circular flat base, at least three supports that extend perpendicularly outward from the circular flat base, a hollow cylinder that has a perimeter wall that extends linearly outward from the at least three supports, the hollow cylinder defines a plurality of teeth that are configured to secure a foam cylinder, and a solid foam cylinder that is inserted within the hollow cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.