Apparatus on a concrete slip forming machine for inserting dowel bars within a split pan having critical dimensions
US5924817A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 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. A dowel bar inserter having individual fork assemblies is disposed above this space in the pan 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. The front pan portion is greater than three feet long. The rear pan portion is greater than two feet long and the front pan portion is preferably longer than the rear pan portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.