Bubble relief form for concrete
US4702048A · kind A · utility
41Cited by
9References
6Claims
0Family size
Inventor
Key dates
| Filing date | Apr 6, 1984 |
| Grant date | Oct 27, 1987 |
| Priority date | — |
| Expiry date | Apr 6, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04B2/84
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rigid, light-weight, thermoplastic bubble insulation form for cast in situ concrete slabs includes hemispherical void spaces for reduction of concrete volume and thermal insulation characteristics. An upper hemispheric surface provides an integral seating arrangement for wire mesh reinforcement. An under-surface of the form includes spacer nodules for facilitating drainage. The bubble relief form is water impervious for controlling curing of the concrete and further is supplied in modular units adapted for trimming and overlapping spliced connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.