Concrete form with integral drain
US5586416A · kind A · utility
Inventors
Key dates
| Filing date | Mar 22, 1995 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Mar 22, 2015 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D27/016
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A footing/foundation form with an integral drain having two substantially parallel spaced apart, serpentuitous walls. Each wall includes a plurality of hollow tubes elevated "to grade" above an excavation bottom by a stake and clip mechanism with gravel filled between the elevated tubes and the excavation bottom such that the elevated tube and gravel both engage concrete poured between the walls. The tubes are common 10-foot PVC tubes with a plurality of holes positioned away from the footing/foundation thereby providing the form with an integral drain. The stakes are preferably pieces of reinforcing bar and the clips, while quite effective, are also inexpensively manufactured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.