Patent US3091351A successfully refreshed from Google Patents.
US3091351A
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Assignee: J.E. Dilworth Co
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Filing: 1962-03-27
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Granted: 1963-05-28
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Expires: 1982-03-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Walker L Wellford
- 👤 James A Farnham
- 👤 Henry L Carson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:37
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/48; B65G65/4809; B65G65/4818; B65G65/4827; A; A01; A01F; A01F25/00; A01F25/16; A01F25/20; B65G65/4836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A STORAGE STRUCTURE, A SHELL MEMBER DEFINING A STORAGE CAVITY THEREIN, A FOUNDATION SUPPORTING SAID SHELL MEMBER AND CLOSING THE BOTTOM THEREOF, A ROTATABLE UNLOADER FLOOR DISPOSED IN THE BOTTOM OF SAID CAVITY WITHIN SAID SHELL MEMBER AND SERVING TO SUPPORT THE MATERIAL STORED IN SAID CAVITY, MEANS TO ROTATE SAID FLOOR, SAID FLOOR HAVING A PLURALITY OF APERTURES THEREIN ADAPTED TO DISLODGE AND PASS MATERIAL STORED IN SAID CAVITY DOWNWARDLY THROUGH SAID FLOOR AS SAID FLOOR IS ROTATED, MEANS DISPOSED BENEATH SAID FLOOR TO CARRY OFF THE STORED MATERIAL DISLODGED BY SAID FLOOR, AND A CENTRAL HYDRAULIC BEARING FOR VERTICALLY SUPPORTING SAID FLOOR ON A BODY OF FLUID TO THEREBY FACILITATE ROTATION THEREOF, SAID HYDRAULIC BEARING INCLUDING MEANS FOR LIFTING AND LOWERING SAID FLOOR BY HYDRAULIC PRESSURE DURING INSTALLATION, MAINTENANCE, AND REPAIR OF SAID STORAGE STRUCTURE.
Claim 2
Dependent Claim
138 words
IN A STORAGE STRUCTURE, A SHELL MEMBER DEFINING A STORAGE CAVITY THEREIN, A FOUNDATION SUPPORTING SAID SHELL MEMBER AND CLOSING THE BOTTOM THEREOF, A ROTATABLE UNLOADER FLOOR DISPOSED IN THE BOTTOM OF SAID CAVITY WITHIN SAID SHELL MEMBER AND SERVING TO SUPPORT THE MATERIAL STORED IN SAID CAVITY, MEANS TO ROTATE SAID FLOOR, SAID FLOOR HAVING A PLURALITY OF APERTURES THEREIN ADAPTED TO DISLODGE AND PASS MATERIAL STORED IN SAID CAVITY DOWNWARDLY THROUGH SAID FLOOR AS SAID FLOOR IS ROTATED, MEANS DISPOSED BENEATH SAID FLOOR TO CARRY OFF THE STORED MATERIAL DISLODGED BY SAID FLOOR, AND A CENTRAL HYDRAULIC BEARING FOR VERTICALLY SUPPORTING SAID FLOOR ON A BODY OF FLUID TO THEREBY FACILITATE ROTATION THEREOF, SAID HYDRAULIC BEARING INCLUDING MEANS FOR LIFTING AND LOWERING SAID FLOOR BY HYDRAULIC PRESSURE DURING INSTALLATION, MAINTENANCE, AND REPAIR OF SAID STORAGE STRUCTURE.
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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) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |