Tramp metal detection system with belt splice avoidance for conveyors
Abstract
Abstract A SYSTEM FOR DETECTING AND WARNING OR OTHERWISE REACTING TO THE PRESENCE OF PIECES OF TRAMP METAL IN ORE OR OTHER MATERIALS BEING CARRIED ON A CONVEYOR BELT, WITHOUT FALSE RESPONSES DUE TO THE PRESENCE OF METALLIC COMPONENTS, SUCH AS SPLICE LACINGS, AT INTERVALS ALONG THE LENGTH OF THE BELT. MEANS ARE PROVIDED FOR CLAMPING THE TRAMP METAL DETECTOR OUTPUT PORTION OF THE SYSTEM DURING TRAVEL OF SUCH METALLIC COMPONENTS OF THE BELT PAST THE TRAMP METAL SENSING PORTION OF THE SYSTEM. THE CLAMPING MEANS ARE TRIGGERED BY A PROXIMITY DETECTOR LOCATED ADAJCENT TO THE CONVEYOR BELT UPSTREAM FROM THE TRAMP METAL SENSING PORTION OF THE SYSTEM, AND ARE RESET BY A SECOND PROXIMITY DETECTOR LOCATED DOWNSTREAM FROM THE TRAMP METAL SENSING PORTION OF THE SYSTEM, OR BY TIME-ELAY MEANS. THE LATER IS PREFERABLY PROVIDED IN ANY EVENT AS A SAFETY MEASURE. THE METAL SENSING PORTION IS PREFERABLY AN ELECTRICAL COIL CONSTRUCTED TO EASILY FIT AROUND AN ENDLESS CONVEYOR BELT.
Inventors
- 👤 Orson R Lingmann
- 👤 Milton O Gold
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |