Apparatus for inserting dowel bars within the pan of a concrete slip forming machine
US5941659A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Jun 9, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C23/04
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus for inserting dowel bars into a concrete slab in association with a slip forming machine of a type having a frame with a mold attached thereto for shaping uncured concrete into a continuous concrete slab. The mold having a front and rear pan portion with a space therein completely across the mold. Dowel bar retainers are disposed above this space in the pan for holding dowel bars in readiness to be inserted into the concrete slab. A dowel bar inserter having individual fork assemblies is disposed above the dowel bar retainers for pushing the dowel bars down into the formed concrete slab, preferably all at one time. The dowel bar inserter is adjustable and removable. If removed, the forward and rear pan portions of the mold can be bolted together instead of being spaced apart.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.