US3721077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractors
Assignee: C Van der Lely NV
•
Filing: 1969-10-03
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Granted: 1973-03-20
•
Expires: 1989-10-03
Abstract
Abstract A tractor includes a frame on wheels and a driver''s platform which is adjustably connected to the tractor and movable relative to the frame so that various implement attachments can be placed on the upper surface of the tractor at least partly above the frame. Coupling members, including lifting cylinders are connected to the frame to position and secure the attachments to the tractor.
Inventors
- 👤 Der Lely C Van
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:24
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/02; A; A01; A01B; A01B51/00; A01B51/02; A01B51/026; A01D; A01D41/00; A01D41/04; A01D41/12; A01D67/00; A01D69/00; A01D69/06; A01D87/00; A01D90/00; B60; B60K; B60K17/00; B60K17/36; B62D33/00; B62D33/06; B62D33/063; B62D33/0636; B62D49/06; B62D49/0621; B62D53/00; B62D53/04; Y; Y10; Y10S; Y10S56/00; Y10S56/09
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
174 words
A tractor comprising a frame, an engine and a movable driver''s platform, a plurality of ground wheels being mounted on each side of said frame and at least two of said ground wheels being in driving connection with said engine, said tractor having attachment means that position alternative agricultural attachment implement bodies on said frame with at least part of said attachment bodies being secured over the upper surface of said frame, said driver''s platform being pivotally connected at the forward end of said frame and being pivotable about an axis mounted on said frame and movable from a position over said forward end to a position located at least partly beyond the outlines of said frame and in front of the forward wheels when said tractor is viewed in plan, said attachment means comprising a plurality of upwardly extending lifting cylinders and said implement bodies being attachable to the upper surface of said frame with the aid of said attachment means to occupy aT least part of the forward end of said frame.
Claim 2
Dependent Claim
174 words
A tractor comprising a frame, an engine and a movable driver''s platform, a plurality of ground wheels being mounted on each side of said frame and at least two of said ground wheels being in driving connection with said engine, said tractor having attachment means that position alternative agricultural attachment implement bodies on said frame with at least part of said attachment bodies being secured over the upper surface of said frame, said driver''s platform being pivotally connected at the forward end of said frame and being pivotable about an axis mounted on said frame and movable from a position over said forward end to a position located at least partly beyond the outlines of said frame and in front of the forward wheels when said tractor is viewed in plan, said attachment means comprising a plurality of upwardly extending lifting cylinders and said implement bodies being attachable to the upper surface of said frame with the aid of said attachment means to occupy aT least part of the forward end of said frame.
Claim 3
Dependent Claim
31 words
A tractor as claimed in claim 1, wherein said attachment means comprises lifting cylinders located on each side of said frame and adjacent the forward and rearward ends of said frame.
Claim 4
Dependent Claim
25 words
A tractor as claimed in claim 1, wherein coupling means are provided adjacent each end of said tractor to assist in positioning the attachment bodies.
Claim 5
Dependent Claim
39 words
A tractor as claimed in claim 1, wherein the upper part of at least one of said upwardly extending lifting cylinders in its withdrawn condition, is located at about the same level as the upper surface of said frame.
Claim 6
Dependent Claim
25 words
A tractor as claimed in claim 1, wherein at least one power take-off shaft from said engine is positioned at each end of said frame.
Claim 7
Dependent Claim
25 words
A tractor as claimed in claim 5, wherein at least one of said power take-off shafts is connectable to the driving shaft of said attachment.
Claim 8
Dependent Claim
33 words
A tractor as claimed in claim 1, wherein said driver''s platform is pivotally connected to said frame by at least one pivotable arm which is turnable about said axis relative to said frame.
Claim 9
Dependent Claim
28 words
A tractor as claimed in claim 7, wherein said arm is pivotally connected to said frame and turnable about two axes located at one side of said tractor.
Claim 10
Dependent Claim
15 words
A tractor as claimed in claim 1, wherein said ground wheels have the same diameters.
Claim 11
Dependent Claim
31 words
A tractor as claimed in claim 1, wherein coupling means are associated with said frame and said coupling means has controls which are located to be actuated from said driver''s platform.
Claim 12
Dependent Claim
23 words
A tractor as claimed in claim 1, wherein said attachment bodies are agricultural implements which rest on the upper surface of said frame.
Claim 13
Dependent Claim
56 words
A tractor as claimed in claim 1, wherein said attachment bodies comprise a bunker and a mowing mechanism with a crop pickup mechanism secured to the forward end of said tractor, and conveyor means mounted on said tractor to extend beneath said frame, whereby processed crop can be fed towards the back end of said tractor.
Claim 14
Dependent Claim
25 words
A tractor as claimed in claim 1, wherein the entire upper surface of said frame is flat and said attachment bodies rest on said surface.
Claim 15
Dependent Claim
29 words
A tractor as claimed in claim 13, wherein said frame is an elongated hollow beam which forms the upper flat surface of said tractor and which houses the engine.
Claim 16
Dependent Claim
34 words
A tractor as claimed in claim 1, wherein coupling means are associated with said frame and said coupling means include hooks which are pivotally connected to hydraulic cylinders at each end of said frame.
Claim 17
Dependent Claim
30 words
A tractor as claimed in claim 15, wherein said coupling means includes at least two hooks lying, one above the other, which are intercoupled by means of a coupling rod.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |