US3624853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary sweeper
Assignee: Individual
•
Filing: 1970-11-16
•
Granted: 1971-12-07
•
Expires: 1990-11-16
Abstract
Abstract A PAIR OF AXIALLY ALIGNED CYLINDRICAL BROOMS HAVING INNER ENDS EACH MOUNTED ON AN OPPOSITE END OF A ROTARY SHAFT FOR COMMON ROTATION THEREWITH, AND SUPPORTING STRUCTURE AND A ROTARY POWER TRANSMISSION ELEMENT FOR THE SHAFT DISPOSED BETWEEN THE INNER ENDS OF THE BROOMS, THE SHAFT PROVIDING THE SOLE SUPPORT FOR AT LEAST ONE OF THE BROOMS FROM THE SUPPORTING STRUCTURE, WHEREBY THE OUTER END OF AT LEAST ONE OF THE BROOMS IS UNOBSTRUCTED.
Inventors
- 👤 Orlando W Kromer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:55
CPC Classifications
E; E01; E01H; E01H1/00; E01H1/02; E01H1/05; E01H1/056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |