Auger apparatus drive system
Abstract
Abstract AN AUGER MACHINE, SUCH AS A TRENCH DRILL, HAVING AN AUGER CARRIAGE THAT IS MOVED BY A CYLINDER THAT CAN FORCE THE AUGER FORWARD INTO THE MATERAL BEING DRILLED BY SUPPLYING THE CYLINDER WITH HYDRAULIC LIQUID UNDER PRESSURE AND AT A RATE CORRESPONDING TO THE RATE OF AUGER PENETRATION, MEANS BEING PROVIDED TO INSURE THAT FOR THE RATE OF PENETRATION THE PRESURE AND POWER REQUIREMENTS WILL BE WITHIN THE CAPABILITIES OF THE APPARATUS, AND THAT LITTLE IF ANY LIQUID AT HIGH PRESSURE IS VENTED WITH LOSS OF ENERGY AS WASTE HEAT. THE HYDRAULIC SYSTEM INCLUDES A VARIABLE DISPLACEMENT PUMP FOR SUPPLYING LIQUID TO THE CYLINDER ON A SELECTED SIDE OF THE PISTON AT A CONTROLLED DESIRED RATE, MEANS FOR CONTROLLING THE PUMP TO CONTROL THE RATE AT WHICH FLUID IS SUPPLIED BY THE PUMP, AND MEANS FOR LIMITING THE MAXIMUM PRESSURE OF THE HYDRAULIC LIQUID TO AN UPPER LIMIT CORRELATED TO THE RATE OF PENETRATION OF THE AUGER, TO INSURE THAT MAXIMUM PRESSURES ARE WITHIN THE CAPABILITIES OF THE APPARATUS, AND MAXIMUM PUMP POWER REQUIREMENTS ARE WITHIN THE CAPABILITIES OF THE POWER SUPPLY MEANS SUCH AS A POWER TAKEOFF FROM AN INTERNAL COMBUSTION ENGINE DRIVING THE AUGER.
Inventors
- 👤 Ronald C Deeter
- 👤 William G Young
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 |