US3665685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mowing device for cutting vegetation adjacent a fence
Assignee: Individual
•
Filing: 1970-07-06
•
Granted: 1972-05-30
•
Expires: 1990-07-06
Abstract
Abstract A device for cutting vegetation on both sides of a fence, comprising, a chassis adapted to be pivotally mounted behind a tractor so as to be pulled in various angular positions relative to the tractor, a frame having a reverse U-shape including a base and two pending legs, the said base being pivotally connected to the chassis about a substantially vertical axis, two L-shaped members having a vertical arm and a horizontal arm, each vertical arm is pivotally connected to each leg of the frame about a vertical axis, two lawn-mowers for cutting vegetation, each lawnmower is rigidly secured at the end of each of the said horizontal arms, connection between said two members for biassing the two lawn-mowers towards each other, and a holder for resiliently restraining the movement of each mower relative to the frame.
Inventors
- 👤 Jean Allard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:10
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/86; A01D34/863
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
190 words
A mowing device for cutting vegetation on both sides of a fence, comprising: a chassis adapted to be pivotally mounted behind a tractor so as to be pulled in various parallel directions relative to the intended direction of travel of the tractor, a frame having an invented U-shape including a base and two pending legs, the said base being pivotally connected to the chassis about a substantially vertical axis, two L-shaped members having a vertically extending arm and a horizontally extending arm, each vertical arm is pivotally connected to each leg of the frame about a vertical axis, two moving means for cutting vegetation, each mowing means rigidly secured at the end of each of the said horizontally extending arms, connecting means between the vertically extending arm of said two members for resiliently biassing the two mowing means towards each other, the said connecting means comprising stop means for preventing overlapping of said mowing means when the latter are at different levels, holding means mounted between the frame and each end of the said connecting means for resiliently restraining independently the movement of each mowing means relative to the chassis.
Claim 2
Dependent Claim
190 words
A mowing device for cutting vegetation on both sides of a fence, comprising: a chassis adapted to be pivotally mounted behind a tractor so as to be pulled in various parallel directions relative to the intended direction of travel of the tractor, a frame having an invented U-shape including a base and two pending legs, the said base being pivotally connected to the chassis about a substantially vertical axis, two L-shaped members having a vertically extending arm and a horizontally extending arm, each vertical arm is pivotally connected to each leg of the frame about a vertical axis, two moving means for cutting vegetation, each mowing means rigidly secured at the end of each of the said horizontally extending arms, connecting means between the vertically extending arm of said two members for resiliently biassing the two mowing means towards each other, the said connecting means comprising stop means for preventing overlapping of said mowing means when the latter are at different levels, holding means mounted between the frame and each end of the said connecting means for resiliently restraining independently the movement of each mowing means relative to the chassis.
Claim 3
Dependent Claim
26 words
A device as recited in claim 1, wherein the connecting means comprise a stop for limiting the movement of the two mowing means towards each other.
Claim 4
Dependent Claim
19 words
A device as recited in claim 1, wherein each of the two mowing means comprise a rotating blade lawn-mower.
Claim 5
Dependent Claim
15 words
A device as recited in claim 3, wherein the lawn-mower is actuated by hydraulic means.
Claim 6
Dependent Claim
33 words
A device as recited in claim 3, comprising deflecting means extending between each lawn-mower and the corresponding horizontally extending arm of the said members for preventing the wedging of the fence posts therebetween.
Claim 7
Dependent Claim
16 words
A device as recited in claim 5, wherein the deflecting means comprise a freely rotating belt.
Claim 8
Dependent Claim
31 words
A device as recited in claim 1, comprising means for pivotally raising the most distant leg from the tractor outwardly of the said U-shape towards the upper part of the frame.
Claim 9
Dependent Claim
26 words
A device as recited in claim 7, wherein the raising means comprise a hydraulic piston connected between the said base and each leg of the frame.
Claim 10
Dependent Claim
29 words
A device as recited in claim 1, wherein the holding means comprise a spring and a chain mounted parallel thereto between the said frame and each vertically extending arm.
Claim 11
Dependent Claim
33 words
A device as recited in claim 1, wherein the holding means comprise a fluid piston mounted between the frame and each vertically extending arm for absorbing the shocks on the two mowing means.
Claim 12
Dependent Claim
28 words
A device as recited in claim 1, wherein the chassis is pivotally connected to the tractor and adapted to be immobilized at both ends of its pivoting movement.
Claim 13
Dependent Claim
60 words
A device as recited in claim 1, wherein the connecting means between the said two members comprise a lever perpendicularly fixed to each vertically extending arm, a longitudinally adjustable rod fixed to each of said levers, a stop for limiting the adjustment of said rod to a minimum length, and a spring for urging said rod towards its minimum length.
Claim 14
Dependent Claim
37 words
A device as recited in claim 3, comprising a hydraulic pump actuated by the tractor, a hydraulic motor for actuating each lawn-mower and a hydraulic circuit for connecting in series the pump and the two said motors.
Claim 15
Dependent Claim
22 words
A device as recited in claim 13, wherein at least a part of said chassis constitutes a reservoir for the hydraulic circuit.
Claim 16
Dependent Claim
30 words
A device as recited in claim 1, comprising a pivoting member between the tractor and the chassis, and means for angularly adjusting the said pivoting member relative to the chassis.
Claim 17
Dependent Claim
27 words
A device as recited in claim 1, wherein the said chassis comprises at least a wheel for supporting the outer end of the chassis on the ground.
Claim 18
Dependent Claim
24 words
A device as recited in claim 1, wherein the said chassis has two supporting wheels, at least one of the wheels is vertically adjustable.
Claim 19
Dependent Claim
27 words
A device as recited in claim 3, wherein the lawn-mowers have a toothed skirt to facilitate the vegetation to remain in a more erect position when mowed.
Claim 20
Dependent Claim
27 words
A device as recited in claim 3, wherein the vertically extending arm and the horizontally extending arm of the said members are pivotally connected to each other.
Claim 21
Dependent Claim
21 words
A device as recited in claim 19, wherein the horizontally extending arm comprises means for being resiliently urged towards the ground.
Claim 22
Dependent Claim
53 words
A device as recited in claim 20, wherein the lawn-mowers are each provided with a skirt, a curved leaf fixed to said skirt and adapted to contact the ground for preventing the lawn-mower from touching the ground, and means for resiliently urging said leaf in a predetermined angular position about a vertical axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |