Patent US3772865A successfully refreshed from Google Patents.
US3772865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum type mower
Assignee: Maschinenfabrik Fahr AG
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Filing: 1972-03-06
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Granted: 1973-11-20
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Expires: 1992-03-06
Abstract
Abstract A multidrum mower in which an array of mower drums is provided across the direction of travel of the mowing machine and a rotary windrow-forming deflecting drum is provided behind the mowing drums. Between the mowing and windrow-forming drums there is provided a guide surface which may be movable or stationary to lead the mown crop onto the rearwardly disposed drum.
Inventors
- 👤 H Ruprecht
- 👤 J Glunk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:48
CPC Classifications
A; A01; A01D; A01D57/00; A01D57/30; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/667; A01D34/668
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
A mower comprising a support; a plurality of mower assemblies spaced along said support and rotatable about respective generally upright axes; a freely rotatable windrow-forming member mounted on said support rearwardly of said assemblies and having an upright axis of rotation for intercepting crop material from said assemblies and depositing same in a windrow on the ground, said member being rotatable about said axis in either sense; a substantially vertically extending transport surface disposed between said assemblies and said member for leading said crop material to the latter; and means for selectively mounting said transport surface on saId support for directing said crop material onto said member in either of said senses.
Claim 2
Dependent Claim
112 words
A mower comprising a support; a plurality of mower assemblies spaced along said support and rotatable about respective generally upright axes; a freely rotatable windrow-forming member mounted on said support rearwardly of said assemblies and having an upright axis of rotation for intercepting crop material from said assemblies and depositing same in a windrow on the ground, said member being rotatable about said axis in either sense; a substantially vertically extending transport surface disposed between said assemblies and said member for leading said crop material to the latter; and means for selectively mounting said transport surface on saId support for directing said crop material onto said member in either of said senses.
Claim 3
Dependent Claim
59 words
The mower defined in claim 1 wherein said assemblies are provided in at least one pair, said member and said transport surface being associated with said pair of assemblies, said member comprising a windrowing drum journaled on said support for rotation about a generally upright axis inclined slightly to the vertical, said surface lying in a generally vertical plane.
Claim 4
Dependent Claim
16 words
The mower defined in claim 2 wherein said surface is a plate mounted on said support.
Claim 5
Dependent Claim
25 words
The mower defined in claim 3, further comprising pivot means fixing said plate to said support for upward swinging movement about a generally horizontal axis.
Claim 6
Dependent Claim
17 words
The mower defined in claim 4, further comprising means for swingingly mounting said member on said support.
Claim 7
Dependent Claim
59 words
The mower defined in claim 5 wherein the last mentioned means includes a parallelogrammatic linkage between said support and said assemblies, an arm pivotally connected to said linkage and carrying said member, means for displacing said linkage to elevate said assemblies, and a traction bar connected to said arm for swinging said member between said support and said assemblies.
Claim 8
Dependent Claim
22 words
The mower defined in claim 2 wherein said member is formed with a plurality of circumferentially spaced downwardly extending elastically deflectable tongues.
Claim 9
Dependent Claim
30 words
The mower defined in claim 7 wherein said member is provided with a plurality of circumferentially spaced staves, each of said tongues forming an extension of one of said staves.
Claim 10
Dependent Claim
21 words
The mower defined in claim 8 wherein said staves are anchored at one end and are limitedly deflectable over their lengths.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |