Patent US3913683A successfully refreshed from Google Patents.
US3913683A
Expired / Lapsed
US
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Implement transport attachment
Assignee: Case LLC
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Filing: 1971-01-11
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Granted: 1975-10-21
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Expires: 1991-01-11
Abstract
Abstract A grain drill adapted to be towed in a forward direction during a planting operation and supported by a forwardly disposed caster wheel and rearwardly disposed non-caster wheels. A pair of transport units is attached to the frame of the drill rearwardly of the non-caster wheels. Each unit includes a pair of transport wheel assemblies interconnected by a hydraulic power unit for swinging transport wheels between raised and ground-engaging positions. In the ground-engaging position the non-caster wheels are supported off the ground and the drill is supported for transport in either forward or endwise directions.
Inventors
- 👤 Nils O Olsson
- 👤 Robert W Logue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
A; A01; A01B; A01B73/00; A01B73/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A transport wheel assembly for an agricultural implement having a frame section extending transversely to the forward direction of travel on the implement, the wheel assembly comprising: a pair of arm members pivotally mounted in spaced apart relation on said frame section for pivotable movement in a common vertical plane disposed in parallel relation to said frame section; a pair of transport wheels mounted on said pair of arm members respectively for pivoting movement with said arm members between a raised position and a ground-engaging position; a double acting hydraulic piston-cylinder unit having a cylinder portion pivotally coupled to one of said arm members and a piston portion pivotally coupled to the other of said arm members, whereby said arm members are pivoted in unison in response to extension and retraction of said piston-cylinder unit.
Claim 2
Dependent Claim
135 words
A transport wheel assembly for an agricultural implement having a frame section extending transversely to the forward direction of travel on the implement, the wheel assembly comprising: a pair of arm members pivotally mounted in spaced apart relation on said frame section for pivotable movement in a common vertical plane disposed in parallel relation to said frame section; a pair of transport wheels mounted on said pair of arm members respectively for pivoting movement with said arm members between a raised position and a ground-engaging position; a double acting hydraulic piston-cylinder unit having a cylinder portion pivotally coupled to one of said arm members and a piston portion pivotally coupled to the other of said arm members, whereby said arm members are pivoted in unison in response to extension and retraction of said piston-cylinder unit.
Claim 3
Dependent Claim
28 words
The subject matter of claim 1, including means journaling said transport wheels on said arm members for swinging movement about respective axes disposed parallel to said vertical plane.
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |