Patent US3589451A successfully refreshed from Google Patents.
US3589451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hitch mechanism
Assignee: Case LLC
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Filing: 1968-09-27
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Granted: 1971-06-29
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Expires: 1988-09-27
Abstract
Abstract A hitch mechanism for connecting a tillage implement, or the like, to a tractive vehicle, such as a tractor, with the hitch mechanism including means responsive to turning movement of the tractor for steering a tail wheel at the rearward end of the implement. The hitch mechanism is of the ''''in-furrow'''' type and includes lateral adjustment means whereby the first plow bottom can be accurately positioned relative to the inside of the outer tractor wheel.
Inventors
- 👤 Philip D Wenzel
- 👤 Gerald L Gallagher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:56
CPC Classifications
A; A01; A01B; A01B3/00; A01B3/46; A01B63/00; A01B63/02; A01B63/023; A01B69/00; A01B69/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
239 words
A tillage implement adapted to be connected to a tractive vehicle having spaced ground-engaging wheels and first and second implement support links at the rearward end thereof, said implement comprising: a frame having a forward end and a rearward end; a plurality of ground-working tools mounted on said frame between said forward end and said rearward end; a steerable tail wheel movably mounted at the rearward end of said frame; linkage means connected to said tail wheel for controlling movement thereof; and hitch means connected to the forward end of said frame, said hitch means including a crossbar having spaced support means for connection to the first and second implement support links, a generally upright steering tube means mounted upon said frame, a steering post within said tube means and connected to said linkage means and to said crossbar, first means for adjusting said steering tube means relative to said crossbar to position said steering tube means at one of a plurality of selectable positions, means on said frame defining a laterally extending groove, means associated with said tube means slidably received in said groove for providing a second universal adjustment means for varying the location of said tube means relative to said frame, and means for securing said tube means at a selected position along said groove, whereby the first ground-working tool carried by said frame can be accurately aligned with the outermost wheel of said tractive vehicle.
Claim 2
Dependent Claim
239 words
A tillage implement adapted to be connected to a tractive vehicle having spaced ground-engaging wheels and first and second implement support links at the rearward end thereof, said implement comprising: a frame having a forward end and a rearward end; a plurality of ground-working tools mounted on said frame between said forward end and said rearward end; a steerable tail wheel movably mounted at the rearward end of said frame; linkage means connected to said tail wheel for controlling movement thereof; and hitch means connected to the forward end of said frame, said hitch means including a crossbar having spaced support means for connection to the first and second implement support links, a generally upright steering tube means mounted upon said frame, a steering post within said tube means and connected to said linkage means and to said crossbar, first means for adjusting said steering tube means relative to said crossbar to position said steering tube means at one of a plurality of selectable positions, means on said frame defining a laterally extending groove, means associated with said tube means slidably received in said groove for providing a second universal adjustment means for varying the location of said tube means relative to said frame, and means for securing said tube means at a selected position along said groove, whereby the first ground-working tool carried by said frame can be accurately aligned with the outermost wheel of said tractive vehicle.
Claim 3
Dependent Claim
44 words
A tillage implement as set forth in claim 1 wherein said groove-defining means includes vertically spaced members secured to the upper and lower sides of said frame at the forward end thereof, said vertically spaced members including vertically aligned surfaces defining said groove therebehind.
Claim 4
Dependent Claim
54 words
A tillage implement as set forth in claim 2 in which the means slidably received in said groove is defined by a plate carried by said tube, said securing means being defined by fasteners connected to said tube means and said plate for drawing said plate into clamping engagement with said vertically aligned surfaces.
Claim 5
Dependent Claim
21 words
A tillage implement as set forth in claim 3 including means for vertically adjusting said tube means relative to said frame.
Claim 6
Dependent Claim
52 words
A tillage implement as set forth in claim 4 in which said tube means includes a mounting plate having a tube secured thereto, and wherein said vertically adjustable means is defined by at least a pair of vertically spaced rows of openings in said mounting plate adapted to receive said fasteners therethrough.
Claim 7
Dependent Claim
56 words
A tillage implement as set forth in claim 1 in which said crossbar has a series of laterally spaced holes therein, and wherein said first adjusting means is defined by a plate supporting said tube means, said plate having openings therein positionable in alignment with the openings in said crossbar, and fasteners impaling said aligned openings.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |