Patent US3243053A successfully refreshed from Google Patents.
US3243053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backhoe
Assignee: Deere and Co
•
Filing: 1964-11-13
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Granted: 1966-03-29
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Expires: 1984-11-13
Abstract
No abstract record available.
Inventors
- 👤 Paul E Hanser
- 👤 Island Rock
- 👤 Edward R Wiemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:28
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/38; E02F3/382; E02F3/384
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A SWIVEL STRUCTURE FOR AN IMPLEMENT BETWEEN A MAIN FRAME AND A BOOM COMPRISING: AN UPRIGHT SHAFT; A BARREL STRUCTURE FORMED ABOUT THE SHAFT TO DEFINE WITH THE LOWER ENDS BEARING AGAINST THE SHAFT TO DEFINE WITH THE SHAFT A CLOSED ANNULAR FLUID CHAMBER; VANE MEANS BETWEEN THE SHAFT AND BARREL STRUCTURE FOR DIVIDING THE CHAMBER INTO EXPANSIBLE AND CONTRACTIBLE COMPARTMENTS; MEANS FOR INTRODUCING AND WITHDRAWING FLUID FROM THE COMPARTMENTS TO EFFECT ANGULAR MOVEMENT BETWEEN THE BARREL STRUCTURE AND SHAFT; SUPPORT MEANS ON THE FRAME; MEANS JOURNALING UPPER AND LOWER ENDS OF THE BARREL STRUCTURE ON THE SUPPORT MEANS FOR ROTATION ABOUT AN UPRIGHT AXIS; ARTICULATE CONNECTING MEANS BETWEEN THE SUPPORT MEANS
Claim 2
Dependent Claim
112 words
A SWIVEL STRUCTURE FOR AN IMPLEMENT BETWEEN A MAIN FRAME AND A BOOM COMPRISING: AN UPRIGHT SHAFT; A BARREL STRUCTURE FORMED ABOUT THE SHAFT TO DEFINE WITH THE LOWER ENDS BEARING AGAINST THE SHAFT TO DEFINE WITH THE SHAFT A CLOSED ANNULAR FLUID CHAMBER; VANE MEANS BETWEEN THE SHAFT AND BARREL STRUCTURE FOR DIVIDING THE CHAMBER INTO EXPANSIBLE AND CONTRACTIBLE COMPARTMENTS; MEANS FOR INTRODUCING AND WITHDRAWING FLUID FROM THE COMPARTMENTS TO EFFECT ANGULAR MOVEMENT BETWEEN THE BARREL STRUCTURE AND SHAFT; SUPPORT MEANS ON THE FRAME; MEANS JOURNALING UPPER AND LOWER ENDS OF THE BARREL STRUCTURE ON THE SUPPORT MEANS FOR ROTATION ABOUT AN UPRIGHT AXIS; ARTICULATE CONNECTING MEANS BETWEEN THE SUPPORT MEANS
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |