Boring bit locator
Abstract
Abstract A BORE PIPE IS ROTATABLY DRIVEN TO DRIVE A HORIZONTAL BORE BELOW THE EARTH''S SURFACE, AND RADIO ENERGY TRANSMITTED FROM A LOCATOR DEVICE IS MONITORED ON THE GROUND SURFACE BY MEANS OF A RADIO RECEIVER TUNED TO THE SAME FREQUENCY. A BORING BIT LOCATOR IS RIGIDLY ATTACHED BETWEEN THE BORE PIPE AND A BORING BIT, AND CARRIES A SMALL BATTERY POWERED TRANSMITTER. A SINGLE OPERATOR WORKING ON THE SURFACE OF THE GROUND WITH A SINGLE RADIO RECEIVER IS ABLE TO MONITOR THE PROGRESS AND LOCATION OF THE BORING BIT. THE BORING BIT LOCATOR HAS WATER PASSAGEWAY WHICH PERMITS A STREAM OF WATER DELIVERED THROUGH THE BORE PIPE TO FLOW TO THE BORING BIT FOR THE PURPOSE OF WASHING CUTTHINGS BACK BACK THROUGH THE HOLE. THE METHOD OF DETERMINING THE POSITION OF THE LOCATOR DEVICE TAKES ADVANTAGE OF THE RADIATION PATTERN OF THE TRANSMITTER, WHICH IS SO ARRANGED AS TO BE SUSCEPTIBLE TO BEING PRECISELY MEASURED.
Inventors
- 👤 Cullough L Mc
- 👤 D Ladine
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) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |