Machines for cutting grooves in concrete and similar roadway surfaces
Abstract
Abstract A FOUR WHEEL VEHICLE CARRIES A GROOVING UNIT THAT ROTATES A GANG OF SAW DISCS OR CUTTERS IN CONTACT WITH A CONCRETE PAVEMENT TO CUT PARALLEL GROOVES THEREIN TO A DESIRED DEPTH. THE GROOVING UNIT CAN BE RAISED FROM THE PAVEMENT TO PERMIT ALL FOUR WHEELS OF VEHICLE TO ENGAGE THE ROADWAY FOR TRANSPORTING THE VEHICLE RAPIDLY BETWEEN LOCATIONS. THE GROOVING UNIT IS LOWERED TO CONTACT ITS SAW DISCS WITH THE PAVEMENT AND ELEVATE A PAIR OF VEHICLE WHEELS (SUCH AS NON-STEERABLE WHEELS) FROM THE PAVEMENT SO THAT THE ENTIRE WEIGHT OF THE VEHICLE AND GROOVING UNIT IS SUPPORTED BY THE PAVEMENT ENGAGING PORTIONS OF THE GROOVING UNIT AND THE OTHER PAIR OF STEERABLE VEHICLE WHEELS, THEREBY INSURING AMPLE CUTTING WEIGHT AND FORCE OF THE SAW BLADES AGAINST THE PAVEMENT WHILE THE ENTIRE COMBINATION IS MOVED BY THE POWERED STEERABLE WHEELS ALONG THE PAVEMENT.
Inventors
- 👤 Frank L Christensen
- 👤 Takeshi Mori
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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 |