Longitudinally extendable screw feed device
Abstract
Abstract AN AUGER-LIKE SCREW FEED DEVICE WHEREIN THE LONGITUDINALLY EXTENDING LENGTH CAN BE SELECTABLY VARIED WITHIN A CONTINUOUS RANGE. THE SCREW-FED DEVICE COMPRISES A PAIR OF TELESCOPING AUGER SECTIONS EACH DISPOSED ALONG A LONGITUDINALLY EXTENDING AXIS INCLUDING A FIRST-AUGER SECTION HAVING AN AXIAL BORE EXTENDING FORWARDLY FROM THE REARWARD END THEREOF, AND FURTHER INCLUDING A SECOND-AUGER SECTION HAVING AN AXIAL SHAFT THAT ENTERS THE REARWARD END OF THE FIRST-AUGER SECTION AXIAL BOORE, THE FORWARD-LENGTH PORTION OF THE SECOND-AUGER SECTION''S HELICAL FLIGHTING IS RADIALLY SPATIALLY SEPARATED FROM THE SECOND-AUGER AXIAL SHAFT WHEREBY ROTATION OF THE SECOND-AUGER AXIAL SHAFT ABOUT THE LONGITUDINAL AXIS ALLOWS TELESCOPING RELATIVE MOVEMENT BETWEEN THE PAIR OF AUGEER SECTIONS, TO ATTAIN THE SELECTED LENGTH FOR THE SCREW FEED DEVICE.
Inventors
- 👤 Norris N Maack
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 |