Patent US4366877A successfully refreshed from Google Patents.
US4366877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power transferring coupling device for a tractor and an implement hitched thereto
Assignee: Multinorm BV
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Filing: 1980-10-08
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Granted: 1983-01-04
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Expires: 2000-10-08
Abstract
Abstract A device for coupling an implement drawn along on the ground with a tractor and for transferring driving power from the power take-off shaft of the tractor to the implement coupled herewith, said device comprising a carrier for a transmission, preferably gear transmission, of at least two portions relatively rotatable about an upwardly extending axis, the input shaft of said transmission coupled with the power take-off shaft being journalled in one portion of the carrier, whilst the second portion of the carrier is coupled with the agricultural implement, said input shaft being further journalled in a support provided with coupling members such that the support can be tilted about a pivotal axis extending transversely of the input shaft in its connection with the tractor.
Inventors
- 👤 Hermanus H. Vissers
- 👤 Gijsbert J. Mijnders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:53
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/86; A01D34/866; A01B; A01B71/00; A01B71/06; A01B71/066
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
129 words
A combined power transmitting and coupling device for connecting a tractor having a power take-off shaft to an implement in order to travel the implement over a field while imparting power to the implement, said device comprising a carrier having first and second portions relatively rotatable about an upstanding axis, said carrier defining a housing for a power transmission means having an input shaft journalled in the first portion of said carrier about an axis aligned with said power take-off shaft, drawbar means for connecting said second portion of the carrier to the implement for imparting travel to the implement as the tractor is driven, and coupling means for pivotally connecting said input shaft to the tractor for movement about a transverse horizontal axis perpendicular to said input shaft.
Claim 2
Dependent Claim
129 words
A combined power transmitting and coupling device for connecting a tractor having a power take-off shaft to an implement in order to travel the implement over a field while imparting power to the implement, said device comprising a carrier having first and second portions relatively rotatable about an upstanding axis, said carrier defining a housing for a power transmission means having an input shaft journalled in the first portion of said carrier about an axis aligned with said power take-off shaft, drawbar means for connecting said second portion of the carrier to the implement for imparting travel to the implement as the tractor is driven, and coupling means for pivotally connecting said input shaft to the tractor for movement about a transverse horizontal axis perpendicular to said input shaft.
Claim 3
Dependent Claim
26 words
A device as claimed in claim 1 wherein said input shaft includes a universal joint having a center through which said transverse horizontal axis substantially passes.
Claim 4
Dependent Claim
30 words
A device as claimed in claim 2 wherein said coupling means comprises pivot pins and said tractor has lower lifting arms including eyelets into which said pivot pins are inserted.
Claim 5
Dependent Claim
27 words
A device as claimed in anyone of claim 1-3 characterized in that said first portion of the carrier and said coupling means constitute a single, solid unit.
Claim 6
Dependent Claim
18 words
A device as claimed in claim 4 characterized in that the transmission comprises a rope or chain transmission.
Claim 7
Independent Claim
19 words
A device as claimed in anyone of claims 1-3 characterized in that the transmission comprises a right-angle pinion transmission.
Claim 8
Dependent Claim
28 words
A device as claimed in claim 6 characterized in that said drawbar means is rotatably journalled on said second portion about an axis perpendicular to said upstanding axis.
Claim 9
Independent Claim
29 words
A device as claimed in anyone of claims 1-3, characterized in that, means are provided for limiting in a vertical and/or horizontal sense the movement of said coupling means.
Claim 10
Dependent Claim
15 words
A device as claimed in claim 8, characterized in that said limiting means are adjustable.
Claim 11
Dependent Claim
38 words
A device as claimed in claim 8, characterized in that said universal joint of said input shaft is a component part of the propeller shaft arranged between said input shaft and the power take-off shaft of the tractor.
Claim 12
Independent Claim
37 words
A device as claimed in anyone of claims 1-3, characterized in that said coupling device or the front end of the drawbar respectively is provided with support means pivotably connected therewith to facilitate coupling to the tractor.
Claim 13
Dependent Claim
18 words
A device as claimed in claim 11, characterized in that said support means is provided with a wheel.
Claim 14
Dependent Claim
27 words
A device as claimed in claim 11, characterized in that the bottom support point of said support means lays on said upstanding axis of said coupling device.
Claim 15
Dependent Claim
23 words
A device as claimed in claim 1 wherein said drawbar means includes a drawbar having an angle adjustable with respect to said implement.
Claim 16
Dependent Claim
27 words
A device as claimed in claim 14, characterized in that said drawbar is connected with the implement so as to be pivotable about a horizontal pivot axis.
Claim 17
Dependent Claim
29 words
A device as claimed in claim 15, characterized in that said drawbar is provided with a mechanical transmission having a driving shaft in line with said horizontal pivot axis.
Claim 18
Dependent Claim
28 words
A device as claimed in claim 16, characterized in that said horizontal pivot-axis and said driving shaft respectively are located at or near the middle of said implement.
Claim 19
Dependent Claim
28 words
A device as claimed in claim 14 characterized in that the said drawbar is connected with the implement so as to be pivotable about a vertical pivot axis.
Claim 20
Dependent Claim
29 words
A device as claimed in claim 18 characterized in that said drawbar is provided with a mechanical transmission having a driving shaft in line with said vertical pivot axis.
Claim 21
Dependent Claim
28 words
A device as claimed in claim 19, characterized in that said vertical pivot-axis and said driving shaft respectively is located at or near the middle of said implement.
Claim 22
Dependent Claim
40 words
A device as claimed in claim 17 or 20 characterized in that said driving shaft forms an intermediate shaft to drive a further driving shaft through a transmission, said further driving shaft being located at the side of said implement.
Claim 23
Dependent Claim
21 words
A device as claimed in claim 14, characterized in that said transmission belonging to said drawbar and implement respectively comprise V-belts.
Claim 24
Dependent Claim
33 words
A device as claimed in claim 22, characterized in that the diameter of at least the lowest flange of the or each belt-pulley exceeds the diameter of the belt-circumference running in a groove.
References Cited (Backward Citations)
US1661737A
Cited
US2335510A
Cited
GB608120A
Cited
US2489633A
Cited
CH330021A
Cited
US3200890A
Cited
US3576227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |