Patent US3104757A successfully refreshed from Google Patents.
US3104757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw conveyor coupling
Assignee: —
•
Filing: —
•
Granted: 1963-09-24
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Expires: 1980-09-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:32
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24; B65G33/32; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/553; Y10T403/70; Y10T403/7075; Y10T403/7077; Y10T403/7079; Y10T403/7081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN COMBINATION, A HOLLOW SCREW CONVEYER SHAFT, AN ELONGATED SLOT ADJACENT THE END OF SAID CONVEYER SHAFT, A BUSHING IN THE HOLLOW END OF SAID CONVEYER SHAFT, AN ELONGATED SLOT IN SAID BUSHING ELEMENT COMMUNICATING WITH SAID ELONGATED SLOT IN SAID CONVEYOR SHAFT, A STUD SHAFT WITHIN SAID BUSHING ELEMENT AND HAVING AN OUTER END EXTENDING BEYOND THE END OF SAID SCREW CONVEYER SHAFT, MEANS ON THE OUTER END OF SAID STUD SHAFT TO SECURE SAID STUD SHAFT TO A SECOND HOLLOW SCREW CONVEYER SHAFT, A BUSHING CAP SUBSTANTIALLY FILLING THE SLOTS IN SAID CONVEYER
Claim 2
Dependent Claim
95 words
IN COMBINATION, A HOLLOW SCREW CONVEYER SHAFT, AN ELONGATED SLOT ADJACENT THE END OF SAID CONVEYER SHAFT, A BUSHING IN THE HOLLOW END OF SAID CONVEYER SHAFT, AN ELONGATED SLOT IN SAID BUSHING ELEMENT COMMUNICATING WITH SAID ELONGATED SLOT IN SAID CONVEYOR SHAFT, A STUD SHAFT WITHIN SAID BUSHING ELEMENT AND HAVING AN OUTER END EXTENDING BEYOND THE END OF SAID SCREW CONVEYER SHAFT, MEANS ON THE OUTER END OF SAID STUD SHAFT TO SECURE SAID STUD SHAFT TO A SECOND HOLLOW SCREW CONVEYER SHAFT, A BUSHING CAP SUBSTANTIALLY FILLING THE SLOTS IN SAID CONVEYER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |