US3347560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swinging boom pressure control hitch
Assignee: Massey Ferguson Services NV
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Filing: 1965-09-20
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Granted: 1967-10-17
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Expires: 1985-09-20
Abstract
No abstract record available.
Inventors
- 👤 Leonard S Hodges
- 👤 Robert B Annat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:15
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/145; B; B62; B62D; B62D49/00; B62D49/06; B62D49/065; B62D53/00; B62D53/04; B62D53/06; B62D53/068
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
IN A TRACTOR HAVING A REARWARDLY EXTENDING, VERTICALLY MOVABLE HITCH LINK WITH HYDRAULIC MEANS FOR APPLYING RAISING AND LOWERING FORCES TO THE HITCH LINK RELATIVE TO THE TRACTOR, AND A DRAWBAR FOR CONNECTION WITH THE TONGUE OF A TRAILED VEHICLE; A REARWARDLY EXTENDING BOOM SUPPORTED ON THE HITCH LINK FOR SIDE TO SIDE SWINGING MOVEMENT RELATIVE TO THE TRACTOR, AND MEANS FOR CONNECTING THE BOOM WITH THE TRAILED VEHICLE TONGUE TO APPLY A LIFTING FORCE TO THE TONGUE AND TRANSFER A PORTION OF THE WEIGHT OF THE TRAILED VEHICLE TO THE TRACTOR WHEN THE HYDRAULIC MEANS APPLIES A RAISING FORCE TO THE HITCH LINK, AND WHEREIN THE BOOM SWINGS ABOUT AN AXIS WHICH IS INCLINED UPWARDLY AND FORWARDLY SUCH THAT THE FREE END OF THE BOOM MOVES DOWNWARDLY AS THE BOOM MOVES OUTS OF PARALLEL RELATIONSHIP WITH THE LONGITUDINAL AXIS OF THE TRACTOR TO REDUCE THE LIFTING FORCE ON THE TRAILED VEHICLE TONGUE WHEN THE TRACTOR AND TRAILED VEHICLE ARE NOT IN LONGITUDINAL ALIGNMENT.
Claim 2
Dependent Claim
164 words
IN A TRACTOR HAVING A REARWARDLY EXTENDING, VERTICALLY MOVABLE HITCH LINK WITH HYDRAULIC MEANS FOR APPLYING RAISING AND LOWERING FORCES TO THE HITCH LINK RELATIVE TO THE TRACTOR, AND A DRAWBAR FOR CONNECTION WITH THE TONGUE OF A TRAILED VEHICLE; A REARWARDLY EXTENDING BOOM SUPPORTED ON THE HITCH LINK FOR SIDE TO SIDE SWINGING MOVEMENT RELATIVE TO THE TRACTOR, AND MEANS FOR CONNECTING THE BOOM WITH THE TRAILED VEHICLE TONGUE TO APPLY A LIFTING FORCE TO THE TONGUE AND TRANSFER A PORTION OF THE WEIGHT OF THE TRAILED VEHICLE TO THE TRACTOR WHEN THE HYDRAULIC MEANS APPLIES A RAISING FORCE TO THE HITCH LINK, AND WHEREIN THE BOOM SWINGS ABOUT AN AXIS WHICH IS INCLINED UPWARDLY AND FORWARDLY SUCH THAT THE FREE END OF THE BOOM MOVES DOWNWARDLY AS THE BOOM MOVES OUTS OF PARALLEL RELATIONSHIP WITH THE LONGITUDINAL AXIS OF THE TRACTOR TO REDUCE THE LIFTING FORCE ON THE TRAILED VEHICLE TONGUE WHEN THE TRACTOR AND TRAILED VEHICLE ARE NOT IN LONGITUDINAL ALIGNMENT.
References Cited (Backward Citations)
US2312258A
Cited
US3062561A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |