Patent US3080931A successfully refreshed from Google Patents.
US3080931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatically folding disc
Assignee: TOWNER Manufacturing Co
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Filing: 1960-12-05
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Granted: 1963-03-12
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Expires: 1980-12-05
Abstract
No abstract record available.
Inventors
- 👤 Loyd E Heckathorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:06
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN COMBINATION: TRACTIVE SUPPORTING MEANS; A DISC GANG PIVOTABLE RELATIVE TO SAID TRACTIVE SUPPORTING MEANS ABOUT AN UPRIGHT AXIS BETWEEN AN OPERATIVE POSITION WHEREIN SAID DISC GANG IS INCLINED RELATIVE TO THE DIRECTION OF MOVEMENT OF SAID TRACTIVE SUPPORTING MEANS AND AN INOPERATIVE POSITION WHEREIN SAID DISC GANG IS PERPENDICULAR TO SAID DIRECTION OF MOVEMENT; LIFTING MEANS ON SAID TRACTIVE SUPPORTING MEANS; AND MEANS COMPRISING TWO SUSPENSION LINKS PIVOTALLY CONNECTED TO SAID LIFTING MEANS AND PIVOTALLY CONNECTED TO SAID DISC GANG FOR PIVOTING SAID DISC GANG ABOUT SAID UPRIGHT AXIS FROM ITS OPERATIVE POSITION TO ITS INOPERATIVE POSITION IN RESPONSE TO LIFTING OF SAID DISC GANG.
Claim 2
Dependent Claim
106 words
IN COMBINATION: TRACTIVE SUPPORTING MEANS; A DISC GANG PIVOTABLE RELATIVE TO SAID TRACTIVE SUPPORTING MEANS ABOUT AN UPRIGHT AXIS BETWEEN AN OPERATIVE POSITION WHEREIN SAID DISC GANG IS INCLINED RELATIVE TO THE DIRECTION OF MOVEMENT OF SAID TRACTIVE SUPPORTING MEANS AND AN INOPERATIVE POSITION WHEREIN SAID DISC GANG IS PERPENDICULAR TO SAID DIRECTION OF MOVEMENT; LIFTING MEANS ON SAID TRACTIVE SUPPORTING MEANS; AND MEANS COMPRISING TWO SUSPENSION LINKS PIVOTALLY CONNECTED TO SAID LIFTING MEANS AND PIVOTALLY CONNECTED TO SAID DISC GANG FOR PIVOTING SAID DISC GANG ABOUT SAID UPRIGHT AXIS FROM ITS OPERATIVE POSITION TO ITS INOPERATIVE POSITION IN RESPONSE TO LIFTING OF SAID DISC GANG.
References Cited (Backward Citations)
US2583830A
Cited
US2759312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |