Apparatus for continuous formation of concrete curbs
US4984932A · kind A · utility
17Cited by
15References
4Claims
0Family size
Inventor
Key dates
| Filing date | Mar 28, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Mar 28, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C19/4893
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A curb forming apparatus is disclosed as having a concrete extruding mold device arranged for continuously receiving concrete and discharging the same to form a standard height curb. Elements of the mold device are connected to a power driven actuator and arranged to be raised and lowered for molding the concrete downwardly and upwardly to form thresholds for driveways and intermediate tapering sections for the transitions between the full height curbs and the thresholds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.