US3176881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded housing for fertilizer and seed spreader
Assignee: California Research LLC
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Filing: 1963-05-09
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Granted: 1965-04-06
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Howard S Malby
- 👤 Fred M Recknagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:22
CPC Classifications
A; A01; A01C; A01C7/00; A01C7/08; A01C7/16; A01C15/00; A01C15/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
163 words
A UNITARY SPREADER FOR PARTICULATE OR GRANULAR MATERIAL COMPRISING A UNITARY PAIR OF OPPOSED LOWER CONCAVE SIDE WALLS FLEXIBLY JOINED ALONG THEIR LOWER EDGED TO FORM A LONGITUDINAL HINGE, A PAIR OF UPPER SIDE WALL DIVERGING OUTWARDLY TO FORM A STORAGE CHAMBER FOR SAID MATERIAL, SAID U PPER SIDE WALLS BEING CONNECTED ALONG THEIR LOWER EDGES TO THE UPPER DEGES OF SAID LOWER WALLS BY SUBSTANTIALLY FLAT INTERMEDIATE SIDE WALLS, EACH END OF EACH SIDE WALL BEING INTEGRAL WITH ONE SIDE HALF OF A VERTICALLY SPLIT END WALL MEANS FOR SECURING TOGETHER THE HALVES OF SAID END WALLS TO FORM END CLOSURES FOR SAID SPREADER, A RESILIENT FACED ROLLER ENCLOSED BY SAID LOWER CONCAVE SIDE WALLS, A SHAFT SECURED TO SAID ROLLER AND EXTENDING OUT OF SAID SPREADER, A DRIVING WHEEL ON EACH END OF SAID SHAFT, A SECOND RESILIENT FACED ROLLER ADJUSTABLY POSITIONED BETWEEN SAID INTERMEDIATE SIDE WALLS AND ADAPTED TO BE ROTATED BY SAID FIRST-NAMED ROLLER TO FEED SAID MATERIAL THEREBETWEEN
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |