US4299077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary-scythe mower with cutter discs
Assignee: Belrecolt SA
•
Filing: 1979-10-04
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Granted: 1981-11-10
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Expires: 1999-10-04
Abstract
Abstract A mower comprises cutter blades mounted by bolts in bushes on cutter discs surmounted by hollow elements secured on respective shafts. Accommodated within or partially within the hollow elements are drive means including hydraulic motors, drive shafts, bevel gear wheels and a toothed wheel meshing with a toothed wheel. A splined shaft extends through the toothed wheels to synchronize the rotations of the cutter discs. A casing encloses the shaft and is provided with renewable sole pieces which slide on the ground.
Inventors
- 👤 Albert Wattron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:28
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/664
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
105 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising a hollow element secured to one of the discs, and drive means disposed at least partially in said hollow element, said drive means including an intermediate shaft disposed higher than and parallel to said transmission shaft, gearing interconnecting said shafts, and bevel gearing interconnecting said intermediate shaft and said disc to convert rotary movement of said intermediate shaft about a horizontal axis into rotary movement of said disc about a vertical axis.
Claim 2
Dependent Claim
105 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising a hollow element secured to one of the discs, and drive means disposed at least partially in said hollow element, said drive means including an intermediate shaft disposed higher than and parallel to said transmission shaft, gearing interconnecting said shafts, and bevel gearing interconnecting said intermediate shaft and said disc to convert rotary movement of said intermediate shaft about a horizontal axis into rotary movement of said disc about a vertical axis.
Claim 3
Dependent Claim
23 words
A rotary mower as claimed in claim 1, in which said drive means is a hydraulic motor drivingly connected to said intermediate shaft.
Claim 4
Dependent Claim
97 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising a hollow element secured to one of the discs, and drive means disposed at least partially in said hollow element and connected to said transmission shaft, said drive means including an intermediate shaft parallel to and higher than said transmission shaft, bevel gearing interconnecting said intermediate shaft and said disc, and a hydraulic motor disposed within said hollow element for driving said intermediate shaft.
Claim 5
Dependent Claim
97 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising a hollow element secured to one of the discs, and drive means disposed at least partially in said hollow element and connected to said transmission shaft, said drive means including an intermediate shaft parallel to and higher than said transmission shaft, bevel gearing interconnecting said intermediate shaft and said disc, and a hydraulic motor disposed within said hollow element for driving said intermediate shaft.
Claim 6
Dependent Claim
17 words
A rotary mower as claimed in claim 3, said hydraulic motor also rotatably driving said transmission shaft.
Claim 7
Dependent Claim
82 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising, for each said disc, an intermediate shaft disposed higher than and parallel to said transmission shaft, gears on said transmission shaft meshing with a gear on each said intermediate shaft, and a bevel gear on each said intermediate shaft meshing with a bevel gear fast with a said disc.
Claim 8
Dependent Claim
82 words
In a rotary mower comprising a plurality of horizontal cutter discs mounted side by side for rotation about vertical axes, a horizontal transmission shaft extending between and below the discs; the improvement comprising, for each said disc, an intermediate shaft disposed higher than and parallel to said transmission shaft, gears on said transmission shaft meshing with a gear on each said intermediate shaft, and a bevel gear on each said intermediate shaft meshing with a bevel gear fast with a said disc.
Claim 9
Dependent Claim
27 words
A rotary mower as claimed in claim 5, said gears on said transmission shaft being smaller than the gears with which it meshes on said intermediate shafts.
References Cited (Backward Citations)
US2811003A
Cited
US2976663A
Cited
US2972158A
Cited
US3507102A
Cited
US3685265A
Cited
DE2104564A1
Cited
US3857225A
Cited
US3841069A
Cited
FR2263453A1
Cited
FR2294625A1
Cited
US4157004A
Cited
US4103476A
Cited
US4197692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-09 | 1985-05-11 | 1985-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-09 | 1989-05-11 | 1989-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-09 | 1993-05-11 | 1993-11-10 | $7700.00 | Window Closed / Lapsed |