US3334739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dressing shoes for grain threshing mechanisms
Assignee: Ransomes Sims and Jeffries Ltd
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Filing: 1964-04-22
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Granted: 1967-08-08
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 John S Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:04
CPC Classifications
B; B07; B07B; B07B4/00; B07B4/02; A; A01; A01F; A01F12/00; A01F12/44; A01F12/446; B07B4/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A GRAIN CLEANING MECHANISM FOR A TRESHING MACHINE BY WHICH GRAIN IS SEPARATED FROM CHAFF, COMPRISING: (A) A FORE-AND-AFT EXTENDING FORWARD SIEVE SECTION MOUNTED FOR OSCILLATORY FORE-AND-AFT MOTION AND HAVING ITS FRONT END COMMUNICATED WITH FEED MEANS FROM WHICH MATERIAL TO BE SEPARATED CAN MOVE ONTO SAID FORWARD SIEVE SECTION; (B) A FORE-AND-AFT EXTENDING REARWARD SIEVE SECTION MOUNTED FOR OSCILLATORY FORE-AND-AFT MOTION, THE FRONT END OF SAID REARWARD SIEVE SECTION BEING AT ALL TIMES SPACED REARWARDLY FROM THE REAR END OF THE FORWARD SIEVE SECTION TO DEFINE A HORIZONTALLY EXTENDING GAP BETWEEN SAID SECTIONS, AND THE FRONT END OF THE REARWARD SIEVE SECTIONS BEING AT A HORIZONTAL LEVEL WHICH IS NOT SUBSTANTIALLY HIGHER THAN THAT OF THE REAR END OF THE FORWARD SIEVE SECTION; (C) DRIVE MEANS FOR IMPARTING FORE-AND-AFT OSCILLATORY MOTION TO BOTH OF SAID SIEVE SECTIONS TO CAUSE MATERIAL ON THEM TO MOVE REARWARDLY; (D) AIR PROPULSION MEANS FOR GENERATING A STREAM OF MOVING AIR; AND
Claim 2
Dependent Claim
158 words
A GRAIN CLEANING MECHANISM FOR A TRESHING MACHINE BY WHICH GRAIN IS SEPARATED FROM CHAFF, COMPRISING: (A) A FORE-AND-AFT EXTENDING FORWARD SIEVE SECTION MOUNTED FOR OSCILLATORY FORE-AND-AFT MOTION AND HAVING ITS FRONT END COMMUNICATED WITH FEED MEANS FROM WHICH MATERIAL TO BE SEPARATED CAN MOVE ONTO SAID FORWARD SIEVE SECTION; (B) A FORE-AND-AFT EXTENDING REARWARD SIEVE SECTION MOUNTED FOR OSCILLATORY FORE-AND-AFT MOTION, THE FRONT END OF SAID REARWARD SIEVE SECTION BEING AT ALL TIMES SPACED REARWARDLY FROM THE REAR END OF THE FORWARD SIEVE SECTION TO DEFINE A HORIZONTALLY EXTENDING GAP BETWEEN SAID SECTIONS, AND THE FRONT END OF THE REARWARD SIEVE SECTIONS BEING AT A HORIZONTAL LEVEL WHICH IS NOT SUBSTANTIALLY HIGHER THAN THAT OF THE REAR END OF THE FORWARD SIEVE SECTION; (C) DRIVE MEANS FOR IMPARTING FORE-AND-AFT OSCILLATORY MOTION TO BOTH OF SAID SIEVE SECTIONS TO CAUSE MATERIAL ON THEM TO MOVE REARWARDLY; (D) AIR PROPULSION MEANS FOR GENERATING A STREAM OF MOVING AIR; AND
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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |