Telescoping form
US6786463B1 · kind B1 · utility
6Cited by
15References
5Claims
0Family size
Inventor
Key dates
| Filing date | Apr 10, 2001 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Dec 28, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G15/061
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A telescoping form for forming a void in poured concrete is disclosed. The form has an upper section defined by a plurality of sides, the upper section of plastic composition, and a lower section capable of telescoping into the upper section, the lower section of plastic composition. The telescoping form may be permanent. The telescoping form may have a lid removably mounted to the upper section of the form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.