Patent US3082830A successfully refreshed from Google Patents.
US3082830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc harrow
Assignee: Alexander Manufacturing Co
•
Filing: 1960-09-30
•
Granted: 1963-03-26
•
Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 William R Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:59
CPC Classifications
A; A01; A01B; A01B21/00; A01B21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A DISC HARROW, A FRAME, DISC GANGS ATTACHED TO SAID FRAME, A HITCH TONGUE HAVING ONE END PIVOTED TO THE FRONT OF SAID FRAME AND HAVING THE OTHER END FIXED IN HEIGHT POSITION, GROUND WHEELS PIVOTED TO SAID FRAME BEHIND SAID HITCH TONGUE, A HITCH TONGUE POSITIONER PIVOTALLY ATTACHED TO SAID HITCH TONGUE AND CONNECTED TO THE FRONT OF SAID FRAME AHEAD OF SAID WHEELS, SAID POSITIONER INCLUDING RESILIENT MEANS TENDING TO URGE SAID HITCH TONGUE DOWNWARDLY ABOUT ITS PIVOTAL CONNECTION TO SAID FRAME, AND ACTUATING MEANS CONNECTED TO SAID WHEELS SO AS TO RAISE AND LOWER SAID WHEELS, SAID ACTUATING MEANS BEING CONNECTED TO SAID HITCH TONGUE POSITIONER AND TENDING TO INCREASE OR DECREASE THE FORCE OF SAID RESILIENT MEANS RESPECTIVELY UPON LOWERING OR RAISING SAID WHEELS SO THAT THE RESILIENT MEANS ACTS THROUGH THE HITCH TONGUE SO AS TO MAINTAIN THE FRAME LEVEL.
Claim 2
Dependent Claim
146 words
IN A DISC HARROW, A FRAME, DISC GANGS ATTACHED TO SAID FRAME, A HITCH TONGUE HAVING ONE END PIVOTED TO THE FRONT OF SAID FRAME AND HAVING THE OTHER END FIXED IN HEIGHT POSITION, GROUND WHEELS PIVOTED TO SAID FRAME BEHIND SAID HITCH TONGUE, A HITCH TONGUE POSITIONER PIVOTALLY ATTACHED TO SAID HITCH TONGUE AND CONNECTED TO THE FRONT OF SAID FRAME AHEAD OF SAID WHEELS, SAID POSITIONER INCLUDING RESILIENT MEANS TENDING TO URGE SAID HITCH TONGUE DOWNWARDLY ABOUT ITS PIVOTAL CONNECTION TO SAID FRAME, AND ACTUATING MEANS CONNECTED TO SAID WHEELS SO AS TO RAISE AND LOWER SAID WHEELS, SAID ACTUATING MEANS BEING CONNECTED TO SAID HITCH TONGUE POSITIONER AND TENDING TO INCREASE OR DECREASE THE FORCE OF SAID RESILIENT MEANS RESPECTIVELY UPON LOWERING OR RAISING SAID WHEELS SO THAT THE RESILIENT MEANS ACTS THROUGH THE HITCH TONGUE SO AS TO MAINTAIN THE FRAME LEVEL.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |