Concrete column forming tube
US6220564A · kind A · utility
4Cited by
6References
1Claims
0Family size
Inventor
Key dates
| Filing date | Mar 13, 2000 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Mar 13, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G9/08
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A concrete column forming tube stored and displayed for sale in the flat, and under the urging of a pivotal traverse of an internal ring is projected into the much larger three dimensional shape necessary for forming the concrete column, this reshaping occurring at a site of use having no space limitations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.