Apparatus for cutting concrete and similar roadway surfaces
Abstract
Abstract A FOUR WHEEL VEHICLE CARRIES A CUTTING UNIT THAT ROTATES A GANG OF SAW DISCS OR OTHER CUTTERS IN CONTACT WITH A CONCRETE PAVEMENT TO PERFORM A CUTTING ACTION THEREON, SUCH AS TO CUT PARALLEL GROOVES IN T HE PAVEMENT TO A DESIRED DEPTH. THE CUTTING UNIT IS DISPOSED BEHIND THE VEHICLE REAR WHEELS, WITH THE CUTTERS LOCATED BETWEEN SUCH WHEELS, A POWER SOURCE OF THE CUTTING UNIT ROTATING THE CUTTERS. THE CUTTING UNIT CAN BE RAISED FROM THE PAVEMENT TO PERMIT ALL FOUR WHEELS OF THE VEHICLE TO ENGAGE THE ROADWAY FOR TRANSPORTING THE VEHICLE RAPIDLY BETWEEN LOCATIONS. IT CAN BE LOWERED TO CONTACT ITS CUTTERS WITH THE PAVEMENT AND ELEVATE THE VEHICLE REAR WHEELS FROM THE PAVEMENT SO THAT THE ENTIRE WEIGHT OF THE VEHICLE AND CUTTING UNIT IS SUPPORTED BY THE PAVEMENT ENGAGEING PORTIONS OF THE CUTTING UNIT AND THE VEHICLE STEERABLE FRONT WHEELS, THEREBY INSURING AMPLE CUTTING WEIGHT AND FORCE OF THE CUTTERS AGAINST THE PAVEMENT WHILE THE ENTIRE COMBINATION IS MOVED BY THE POWERED STEERABLE WHEELS ALONG THE PAVEMENT.
Inventors
- 👤 Warren J Hughes
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |