Patent US3965233A successfully refreshed from Google Patents.
Patent US3233755A successfully refreshed from Google Patents.
US3233755A
Expired / Lapsed
US
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Bottom unloader for storage structures
Assignee: Butler Manufacturing Co
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Filing: 1964-06-09
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Granted: 1966-02-08
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Expires: 1984-06-09
Abstract
No abstract record available.
Inventors
- 👤 Richard L Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:56
CPC Classifications
A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; A01F25/2018; B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/46; B65G65/466
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A BOTTOM UNLOADER APPARATUS FOR A CIRCULAR STORAGE STRUCTURE HAVING A FLOOR, SAID APPARATUS COMPRISING A TROUGH RECESSED IN SAID FLOOR AND EXTENDING DIAMETRICALLY THEREOF, THE LENGTH OF THE TROUGH BEING SUBSTANTIALLY GREATER THAN THE RADIUS OF THE STORAGE STRUCTURE, A PARTIAL COVER FOR THE TROUGH, SUBSTANTIALLY FLUSH WITH THE FLOOR AND PROCEEDING INWARDLY FROM THE PERIPHERY OF THE FLOOR TOWARD THE CENTER THEREOF, SAID COVER DEFINING WITH THE UPPER EDGES OF THE SIDES AND INNER END OF SAID TROUGH AN ELONGATE OPENING HAVING ITS LONGITUDINAL MID-POINT SUBSTANTIALLY AT THE CENTER OF SAID STORAGE STRUCTURE, A PAIR OF PARALLEL DISCHARGE AUGERS LOCATED WITHIN AND EXTENDING SUBSTANTIALLY THE FULL LENGTH OF SAID TROUGH, A PEDESTAL MEMBER EXTENDING UPWARDLY FROM THE BOTTOM OF THE TROUGH AT THE CENTER OF THE STORAGE STRUCTURE AND BETWEEN SAID DISCHARGE AUGERS, AND A SWEEP AUGER PIVOTED AT ONE OF ITS ENDS TO SAID PEDESTAL AND EXTENDING RADIALLY OUTWARDLY THEREFROM ABOVE THE PLANE OF THE FLOOR.
Claim 2
Dependent Claim
159 words
A BOTTOM UNLOADER APPARATUS FOR A CIRCULAR STORAGE STRUCTURE HAVING A FLOOR, SAID APPARATUS COMPRISING A TROUGH RECESSED IN SAID FLOOR AND EXTENDING DIAMETRICALLY THEREOF, THE LENGTH OF THE TROUGH BEING SUBSTANTIALLY GREATER THAN THE RADIUS OF THE STORAGE STRUCTURE, A PARTIAL COVER FOR THE TROUGH, SUBSTANTIALLY FLUSH WITH THE FLOOR AND PROCEEDING INWARDLY FROM THE PERIPHERY OF THE FLOOR TOWARD THE CENTER THEREOF, SAID COVER DEFINING WITH THE UPPER EDGES OF THE SIDES AND INNER END OF SAID TROUGH AN ELONGATE OPENING HAVING ITS LONGITUDINAL MID-POINT SUBSTANTIALLY AT THE CENTER OF SAID STORAGE STRUCTURE, A PAIR OF PARALLEL DISCHARGE AUGERS LOCATED WITHIN AND EXTENDING SUBSTANTIALLY THE FULL LENGTH OF SAID TROUGH, A PEDESTAL MEMBER EXTENDING UPWARDLY FROM THE BOTTOM OF THE TROUGH AT THE CENTER OF THE STORAGE STRUCTURE AND BETWEEN SAID DISCHARGE AUGERS, AND A SWEEP AUGER PIVOTED AT ONE OF ITS ENDS TO SAID PEDESTAL AND EXTENDING RADIALLY OUTWARDLY THEREFROM ABOVE THE PLANE OF THE FLOOR.
References Cited (Backward Citations)
US2914198A
Cited
US3088606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |