Extruded plastic bulkhead device for forming concrete panels
US6398180B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04G17/004
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Adjacent tilt-up concrete wall panels are poured on a horizontal concrete floor or forming surface and are separated by a bulkhead device including a base member or channel of extruded semi-rigid plastics material and secured by screws to the forming surface. The base channel has upwardly projecting walls with inwardly projecting opposing teeth which releasably engage outwardly projecting teeth on spaced side walls of a generally U-shaped bulkhead member of extruded semi-rigid plastics material. The spaced side walls also have opposing ribs for gripping a bulkhead extension member, and the bulkhead member is also extruded with outwardly and downwardly projecting walls which have tapered lower edge portions engaging the forming surface to form chamfer corners on the concrete panels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.