Roller for spring belt conveyors
Abstract
Abstract A ROLLER FOR CONVEYORS OF THE TYPE HAVING A PLURALITY OF ELONGATED COIL SPRINGS IN ENDLESS FORMATION INTERFITTING ROLLER GROOVES AND FORMING PART OF THE POWER TRANSMISSION SYSTEM OF THE CONVEYOR AS WELL AS SUPPORTING OBJECTS BEING CONVEYED ON A STRETCH OF THE ENDLESS SURFACE, SAID ROLLER COMPRISING A HOLLOW CENTRAL SHAFT, MEANS AT EACH END FOR SUPPORTING THE SHAFT FOR ROTATION, A SHELL HAVING AT LEAST ONE PORTION TAPERING OUTWARDLY FROM AN INTERMEDIATE SUPPORTED POSITION TO A SECOND SUPPORTED POSITION AT AN OUTER END OF THE SHAFT, AND THE EXTERIOR TAPERING SURFACE BEING GROOVED THROUGHOUT SUBSTANTIALLY ITS LENGTHWISE EXTENT FOR SUPPORTING COIL SPRING COMPONENTS OF THE CONVEYOR.
Inventors
- 👤 Abe D Penn
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |