Shear key former apparatus and method(s)
US11225769B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Jan 23, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D2600/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided are apparatus and method(s) for forming one or more shear key(s) between embedded concrete retaining wall(s) and concrete floor slab(s), kits for forming such shear key(s) and underground structures such as embedded concrete wall(s) and slab(s) comprising a shear key. In particular, the invention relates to a shear key former apparatus comprising: a box having an enclosable, internal volume, the box comprising a base and at least one, and preferably four, side wall(s), the side wall(s) terminating in a rim; rearwardly of the rim in two opposing portions of the side wall(s), at least one pair of opposing apertures, each pair of apertures defining an entrance and exit in each respective side wall portion for a rigid member to be accommodated extending across the internal volume between the entrance and the exit; a closure panel configured to be received into the rim to enclose the internal volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.