Patent US4269019A successfully refreshed from Google Patents.
US4269019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tedding attachment for rotary harvesting mower
Assignee: Kloeckner Humboldt Deutz AG
•
Filing: 1979-06-22
•
Granted: 1981-05-26
•
Expires: 1999-06-22
Abstract
Abstract A rotary mower has a plurality of upright mowing drums rotatable about respective vertical axes and each having a lower end provided with a plurality of radially outwardly extending blades forming blade orbits on rotation of the drum. Attached to each drum above the respective blades is a multipart ring carrying a plurality of pairs of outwardly directed spring-steel tines. These tines catch crop cut by the blades and project it backwardly behind the mower to ted this crop.
Inventors
- 👤 Gerhard Strobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:02
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/667; A01D34/668; A01D57/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
101 words
In a mowing machine having at least one upright mowing drum centered on and rotatable about an upright axis and having a lower end provided with at least one radially projecting blade defining a blade orbit on rotation of said drum, a crop spreader comprising: a ring surrounding said drum above said blade and having a pair of ends; means for tightening said ring to said drum for joint rotation therewith; and at least one set of radially extending tines having inner ends clamped between said ends of said ring above said blade for joint rotation therewith and with said drum.
Claim 2
Dependent Claim
101 words
In a mowing machine having at least one upright mowing drum centered on and rotatable about an upright axis and having a lower end provided with at least one radially projecting blade defining a blade orbit on rotation of said drum, a crop spreader comprising: a ring surrounding said drum above said blade and having a pair of ends; means for tightening said ring to said drum for joint rotation therewith; and at least one set of radially extending tines having inner ends clamped between said ends of said ring above said blade for joint rotation therewith and with said drum.
Claim 3
Dependent Claim
32 words
The crop spreader defined in claim 1 wherein each set is formed by a U-shaped wire element having a pair of legs constituting said tines and formed of an elastically deformable metal.
Claim 4
Dependent Claim
31 words
The crop spreader defined in claim 2 wherein each of said tines has a main portion extending substantially radially of said axis and a tip inclined to the respective main portion.
Claim 5
Dependent Claim
22 words
The crop spreader defined in claim 3 wherein said tips are inclined into the direction of rotation by between 0° and 20°.
Claim 6
Dependent Claim
23 words
The crop spreader defined in claim 3 wherein said tips are inclined back in the direction of rotation by between 0° and 40°.
Claim 7
Dependent Claim
32 words
The crop spreader defined in claim 3 wherein said drum is provided at said blade with a downwardly flared skirt centered on said axis, said tips being generally parallel to said skirt.
Claim 8
Dependent Claim
13 words
The crop spreader defined in claim 3 wherein said tips are upwardly bent.
Claim 9
Dependent Claim
24 words
The crop spreader defined in claim 1 wherein a plurality of such sets is provided on said drum with said sets generally angularly equispaced.
Claim 10
Dependent Claim
16 words
The crop spreader defined in claim 1 wherein two such sets are provided on said drum.
Claim 11
Dependent Claim
44 words
The crop spreader defined in claim 1 wherein two such sets are provided on said drum generally diametrically apart, said ring having a pair of halves each having a pair of such ends, said sets being secured to said rings at said ring ends.
Claim 12
Dependent Claim
26 words
The crop spreader defined in claim 1, wherein said means is loosenable and said ring is axially displaceable along said drum when said ring is loosened.
Claim 13
Dependent Claim
30 words
The crop spreader defined in claim 1 wherein said tines are displaceable on said drum into a position generally parallel to said axis and closely radially juxtaposed with said drum.
Claim 14
Dependent Claim
17 words
The crop spreader defined in claim 12, further comprising means for securing said tines in said position.
Claim 15
Dependent Claim
35 words
The crop spreader defined in claim 1 wherein said tines have ends defining a tine orbit having a tine-orbit diameter forming a ratio with the diameter of said blade orbit of between 2:1 and 2:3.
References Cited (Backward Citations)
US2521417A
Cited
US3971203A
Cited
US4030275A
Cited
US4094132A
Cited
US4117653A
Cited
US4128987A
Cited
DE2838420A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-25 | 1984-11-24 | 1985-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-25 | 1988-11-24 | 1989-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-25 | 1992-11-24 | 1993-05-26 | $7700.00 | Window Closed / Lapsed |