Patent US3077972A successfully refreshed from Google Patents.
US3077972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor
Assignee: Everyday Manufacturing Co
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Filing: 1961-05-12
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Granted: 1963-02-19
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
- 👤 George F Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:19
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24; B65G33/34; B65G33/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
IN A CONVEYOR, THE COMBINATION OF A DRIVEN ROTATABLE TUBE HAVING DISPENSING OPENINGS THEREIN AND AN OPEN CENTER HELICAL FEED MEMBER LOOSELY POSITIONED IN SAID TUBE IN ENGAGEMENT WITH A PORTION OF THE WALL THEREOF, AND DRIVE MEANS FOR ROTATING SAID TUBE WHEREBY FRICTION BETWEEN THE INTERIOR OF SAID TUBE AND SAID HELICAL FEED MEMBER ROTATES THE SAME, THE RATE OF ROTATION OF SAID
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) | 1966-02-18 | 1966-08-20 | 1967-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-18 | 1970-08-20 | 1971-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-18 | 1974-08-20 | 1975-02-19 | $7700.00 | Window Closed / Lapsed |