Patent US3590928A successfully refreshed from Google Patents.
US3590928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transport wheel linkage mechanism
Assignee: Allis Chalmers Corp
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Filing: 1969-04-28
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Granted: 1971-07-06
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Expires: 1989-04-28
Abstract
Abstract A semimounted or pulled type agricultural implement having wheels used for transport and depth control and wherein such wheels are positioned between a front and a rear ground working tool. Linkage for supporting such wheels adjacent the center of gravity for transport purposes and for positioning such wheels sufficiently spaced from the discharge portion of the front ground working tool as to avoid plugging of material between such tool and such wheel.
Inventors
- 👤 Ferndinand Mirus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:59
CPC Classifications
A; A01; A01B; A01B63/00; A01B63/14; A01B63/16; A01B63/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
In a farm implement including a main frame, front and rear gangs carried by said main frame, transport wheels pivotally mounted from said frame between said gangs, a double crank mechanism supporting each wheel from said main frame and being so constructed and arranged that when said implement are in transport position said wheels is positioned midway between said gangs and when said implement is in working position said wheels are positioned between said gangs but adjacent the forward portion of said rear gang to provide clearance for material acted upon by said front gang, said double crank mechanism comprising a first crank pivotally mounted on said frame and having one arm thereof pivotally mounting a second crank, one arm of said second crank rotatably supporting each wheel and the other arm of said second crank being pivotally connected to a link which is pivotally carried by said frame, and means connected to the other arm of said first crank for raising and lowering said wheel.
Claim 2
Dependent Claim
166 words
In a farm implement including a main frame, front and rear gangs carried by said main frame, transport wheels pivotally mounted from said frame between said gangs, a double crank mechanism supporting each wheel from said main frame and being so constructed and arranged that when said implement are in transport position said wheels is positioned midway between said gangs and when said implement is in working position said wheels are positioned between said gangs but adjacent the forward portion of said rear gang to provide clearance for material acted upon by said front gang, said double crank mechanism comprising a first crank pivotally mounted on said frame and having one arm thereof pivotally mounting a second crank, one arm of said second crank rotatably supporting each wheel and the other arm of said second crank being pivotally connected to a link which is pivotally carried by said frame, and means connected to the other arm of said first crank for raising and lowering said wheel.
Claim 3
Dependent Claim
23 words
The combination recited in claim 1 and wherein said double crank mechanism is positioned between the axes of said front and rear gangs.
Claim 4
Dependent Claim
18 words
The combination recited in claim 1 and wherein said means comprises a hydraulic ram carried by said frame.
Claim 5
Dependent Claim
42 words
The combination recited in claim 3 and wherein said double crank means is so positioned when said wheels are in working position to present the lower portion of said crank means extending parallel to the ground and adjacent to said main frame.
Claim 6
Dependent Claim
25 words
The combination recited in claim 4 and wherein said double crank means is positioned below said main frame when said wheels are in working position.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |