Patent EP0489421A2 successfully refreshed from Google Patents.
US3604185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanisms for driving the cutter elements of a rotary mowing machine
Assignee: Kuhn Freres and Cie
•
Filing: 1968-11-18
•
Granted: 1971-09-14
•
Expires: 1988-11-18
Abstract
Abstract Device for driving the cutter elements of a rotary mowing machine comprising a main bar consisting of a case made of two halves or sections assembled, the upper section having secured thereto the mowing machine driving member and the bearing blocks of the spindles of the pinions driving the discs supporting said cutter elements, and of toothed intermediate wheels of said transmission, characterized in that the bearing blocks or supports of at least two intermediate wheels disposed between two driving pinions are reinforced by a flat bridge piece rigidly secured to, and interconnecting, the lower ends of said bearing blocks, said bridge piece being thus adapted to rigidly assemble the fastening studs of said bearing blocks.
Inventors
- 👤 Walter E Reber
- 👤 Adrien J Formery
- 👤 Wilhelmus H Van Den Heuvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:19
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/76
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
A device for driving the cutter elements of a rotary mowing machine comprising a caselike main bar consisting of assembled upper and lower sections, a machine driving member rigid with a main driving pinion and supported by the upper section of the bar, bearing blocks secured on the upper section of said bar, bearings fitted in said blocks, spindles journaled in said bearings and projecting outside of the bar, discs supported by the upper portion of said spindles, cutting elements supported by said discs, a gear-type transmission comprising driving pinions carried by the lower portion of said spindles and toothed intermediate wheels between the driving pinions, said pinions and wheels being enclosed in said bar, ball-bearing blocks inside said bar supporting said intermediate wheels and pins securing said blocks to the upper part of said bar, the device further comprising flat bridge pieces rigidly secured to bearing blocks of at least two intermediate wheels, said bridge pieces interconnecting the lower ends of said bearing blocks and adapted to reinforce said transmission mechanism by rigidly assembling said fastening pins securing the bridge to the upper section of said bar.
Claim 2
Independent Claim
188 words
A device for driving the cutter elements of a rotary mowing machine comprising a caselike main bar consisting of assembled upper and lower sections, a machine driving member rigid with a main driving pinion and supported by the upper section of the bar, bearing blocks secured on the upper section of said bar, bearings fitted in said blocks, spindles journaled in said bearings and projecting outside of the bar, discs supported by the upper portion of said spindles, cutting elements supported by said discs, a gear-type transmission comprising driving pinions carried by the lower portion of said spindles and toothed intermediate wheels between the driving pinions, said pinions and wheels being enclosed in said bar, ball-bearing blocks inside said bar supporting said intermediate wheels and pins securing said blocks to the upper part of said bar, the device further comprising flat bridge pieces rigidly secured to bearing blocks of at least two intermediate wheels, said bridge pieces interconnecting the lower ends of said bearing blocks and adapted to reinforce said transmission mechanism by rigidly assembling said fastening pins securing the bridge to the upper section of said bar.
Claim 3
Dependent Claim
28 words
A device according to claim 1, wherein said bridge piece interconnecting the bearing blocks of a pair of intermediate wheels has substantially the shape of a rectangular plate.
Claim 4
Dependent Claim
22 words
A device according to claim 2, wherein said bridge piece is welded to the lower faces of said intermediate wheels bearing blocks.
Claim 5
Dependent Claim
17 words
A device according to claim 2, wherein said bridge piece is molded integrally with said bearing blocks.
Claim 6
Dependent Claim
35 words
A device according to claim 2, wherein said bridge piece has substantially the shape of a diamond and is secured by means of screws in two opposite points to the upper section of said bar.
Claim 7
Dependent Claim
20 words
A device according to claim 1, wherein said bridge piece interconnects the bearing blocks of a group of intermediate wheels.
Claim 8
Dependent Claim
55 words
A device according to claim 1, wherein said disc driving pinions and said intermediate wheels enclosed in said caselike bar are disposed asymmetrically therein in relation to the neutral axis of said case, said pinions and wheels being located as close as possible to the inner face of the wall of the upper bar section.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |