US3593504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-cutting mowing machine
Assignee: Landmaschinenfabrik Essen GmbH
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Filing: 1969-01-30
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Granted: 1971-07-20
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Expires: 1989-01-30
Abstract
Abstract A free-cutting mowing machine especially a mowing machine comprising a main frame and a trailing beam pivotally carried on one end thereof on the main frame. A mowing beam is pivotally connected to the other end of the trailing beam and cutting discs rotate about vertical axes and are carried by the mowing beam. A first spring operatively connects the mowing beam with the trailing beam and a second spring operatively connects the mowing beam with the main frame. A tensioning device connects in its operative length to the mowing beam and to the main frame via the trailing beam such that the load of the mowing beam is equalized in a transporting position at least partly for the purpose of an easy, high raising.
Inventors
- 👤 Karl-Heinz Konig
- 👤 Antonius Huntrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:33
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A free-cutting mowing machine, comprising a main frame, a trailing beam pivotally carried on one end thereof on said main frame, a mowinG beam pivotally connected to the other end of said trailing beam, cutting discs rotating about vertical axes and carried by said mowing beam, a first spring operatively connecting said mowing beam with said trailing beam, a second spring operatively connecting said mowing beam with said main frame, and a tensioning means connected in its operative length to said mowing beam and to said main frame via said trailing beam such that the weight of said mowing beam is equalized in a transporting position at least partly for the purpose of any easy, high raising.
Claim 2
Dependent Claim
117 words
A free-cutting mowing machine, comprising a main frame, a trailing beam pivotally carried on one end thereof on said main frame, a mowinG beam pivotally connected to the other end of said trailing beam, cutting discs rotating about vertical axes and carried by said mowing beam, a first spring operatively connecting said mowing beam with said trailing beam, a second spring operatively connecting said mowing beam with said main frame, and a tensioning means connected in its operative length to said mowing beam and to said main frame via said trailing beam such that the weight of said mowing beam is equalized in a transporting position at least partly for the purpose of any easy, high raising.
Claim 3
Dependent Claim
40 words
The mowing machine, as set forth in claim 17, wherein said mowing beam pivotally mounted on said trailing beam is tensioned with same over said first spring, the latter constituting a tension spring which equalizes partly the mowing beam weight.
Claim 4
Dependent Claim
60 words
The mowing machine, as set forth in claim 17, wherein said tensioning means comprises a cable, a holder adjustably disposed on said main frame, said mowing beam is operatively connected with said main frame over said second spring, the latter constituting a tension spring, as well as over said cable, and said cable and said second spring engage said holder.
Claim 5
Dependent Claim
24 words
The mowing machine, as set forth in claim 3, wherein said holder for said cable and said second spring, respectively, comprises a tipping lever.
Claim 6
Dependent Claim
45 words
The mowing machine, as set forth in claim 4, wherein said main frame includes a bearing support, said tipping lever is disposed on said bearing support, and said lever has one end which said second spring engages and another end on which said cable engages.
Claim 7
Dependent Claim
52 words
The mowing machine, as set forth in claim 1, wherein said mowing beam includes an inner support, a first bracket carried by said mowing beam in the region of said inner support, and said first spring and said second spring, and said tensioning means, respectively, at least operatively engage said first bracket.
Claim 8
Dependent Claim
51 words
The mowing machine, as set forth in claim 6, further comprising a second bracket carried by said trailing beam, a link connected to said first bracket, a lever disposed on said second bracket, and said second spring on the one hand and said link on the other hand grip said lever
Claim 9
Dependent Claim
40 words
The mowing machine, as set forth in claim 1, further comprising an abutment means connected between said main frame and said trailing beam, and said abutment means limiting the swinging movement of said trailing beam relative to said main frame.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |