US3972158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vegetation cleaning unit
Assignee: JORNS MEKAN AB
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Filing: 1974-11-19
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Granted: 1976-08-03
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Expires: 1994-11-19
Abstract
Abstract Apparatus for attachment to and propulsion by a vehicle for the purpose of cutting vegetation, particularly shrubs and small trees. A plurality of generally planar, circular-toothed cutting members are supported on the underside of a housing and with each cutting member positioned in a generally horizontal plane with its forward edge extending forwardly of the housing. The cutting members are so arranged that their toothed cutting edges which extend forwardly of the housing jointly form an unbroken cutting line. The cutters are rotated in such a manner that those cutters which are disposed to the left side of a center line of the apparatus are rotated in a counterclockwise direction while those which lie to the right of the center line are rotated in a clockwise direction, thereby facilitating the conveying of the cut vegetation to either side of the apparatus and away from its center portion.
Inventors
- 👤 Stig Lindstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:00
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/86
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
Apparatus for attachment to and propulsion by a vehicle to cut vegetation particularly shrubs and small trees, said apparatus comprising: a housing, a plurality of generally planar circular toothed cutting members, means supporting said cutting members on the underside of said housing in a generally horizontal plane and with the forward edge of each cutting member in the forward direction of movement of the apparatus extending forwardly of said housing, said supporting means so supporting said plurality of cutting members that their toothed cutting edges which extend forwardly of said housing jointly form an unbroken cutting line, and means for rotating each of said cutting members, said rotating means rotating those cutting members whose rotational axis lie to the left side of a center line of the apparatus in a counterclockwise direction and those cutting members which lie to the right of the center line in a clockwise direction so that said cutters tend to convey the cut vegetation away from the center portion of the apparatus.
Claim 2
Dependent Claim
167 words
Apparatus for attachment to and propulsion by a vehicle to cut vegetation particularly shrubs and small trees, said apparatus comprising: a housing, a plurality of generally planar circular toothed cutting members, means supporting said cutting members on the underside of said housing in a generally horizontal plane and with the forward edge of each cutting member in the forward direction of movement of the apparatus extending forwardly of said housing, said supporting means so supporting said plurality of cutting members that their toothed cutting edges which extend forwardly of said housing jointly form an unbroken cutting line, and means for rotating each of said cutting members, said rotating means rotating those cutting members whose rotational axis lie to the left side of a center line of the apparatus in a counterclockwise direction and those cutting members which lie to the right of the center line in a clockwise direction so that said cutters tend to convey the cut vegetation away from the center portion of the apparatus.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 in which said supporting means supports said cutting members with each more centrally disposed cutting member being located forwardly of an adjacent more laterally outwardly disposed cutting member.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1 in which the forward edge of said housing is curved with its central portion lying forwardly of its laterally disposed portions lying to either side of its central portion.
Claim 5
Dependent Claim
13 words
The apparatus of claim 1 in which said cutting members overlap each other.
Claim 6
Dependent Claim
24 words
The apparatus of claim 1 which further includes means for preventing slewing and slanting of a cutting member relative to an adjacent cutting member.
Claim 7
Dependent Claim
55 words
The apparatus of claim 1 which includes an odd number of said cutting members, one of said members having its axis of rotation on an axis of symmetry of said apparatus and the remainder of said cutting members having their axis of rotation disposed in pairs symmetrically on opposite sides of said axis of symmetry.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |