Directed cracking in concrete panel manufacture
US4416842A · kind A · utility
24Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1981 |
| Grant date | Nov 22, 1983 |
| Priority date | — |
| Expiry date | Mar 2, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B11/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacture in which the formation of unsightly stress cracks in sandwich-like panels of prestressed concrete are prevented by the formation of a "contraction joint" at selected locations in the panel's outer layer of concrete during its manufacture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.