Foundation formwork
US12286761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2021 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Mar 21, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G21/185
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A light-weight formwork having a small change in dimensions due to an environmental temperature. A foundation formwork includes a metal frame having a rectangular frame shape, and a resin faceplate attached to the metal frame and closing an opening of the metal frame. The metal frame includes a top plate having fitting notches and L-shaped bridged bodies. The resin faceplate includes protruding bodies fitted with the fitting notches and L-shaped slits into which the bridged bodies are fittingly inserted. The protruding bodies fit with the fitting notches and the bridged bodies are fittingly inserted into the slits, thereby the resin faceplate is attached to the metal frame. The attached resin faceplate closes an opening of the metal frame. The fitting notches and the bridged bodies suppress an expansion and contraction of the resin faceplate in a left and right direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.