Methods for cutting aligned sets of slots in pavement
US5492431A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE01C2301/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for simultaneously cutting parallel slots in a pavement surface is provided, especially for dowel bar retrofit load transfer restoration at joints. The apparatus includes a movable frame lockable with a brake, plurality of parallel cutting blades rotatably mounted on twin cutting heads on the frame, vertical travel unit for raising and lowering the blades independently or in unison, and horizontal travel units for moving the blades horizontally. One of the twin cutting heads is mounted on each side of the frame, with hydraulic adjusting rams for independently setting the width therebetween. A slurry control system which is mounted on the frame provides the blades with coolant and vacuums up the slurry produced during cutting. The method for simultaneously cutting a plurality of slots includes the steps of positioning the apparatus and blades in the desired location, locking the machine against movement relative the surface, rotating the blades, lowering the blades to cut the pavement to a first depth, moving the blades horizontally to form an elongated cut, repeating this plunging and traversing process until the desired depth of cut is achieved, raising the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.