Concrete form with integral drain and adjustable stake therefor
US5884439A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D27/01
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An adjustable concrete form comprises at least one tube and an adjustable stake having a post and a tube cradle. The tube has at least one drainage aperture providing the form with drainage. The adjustable stake is configured for adjustably supporting the tube in spaced-apart relation to an excavation bottom. The post has at least one slender end to facilitate driving the post partially into the excavation bottom. The tube cradle is configured for releasable engagement with the tube to thereby secure the tube relative to the post and to support the tube in spaced-apart relation to the excavation bottom. The tube cradle is adjustably connected to the post so that adjustment of the post relative to the cradle effectuates adjustment of the tube relative to the excavation bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.