Patent US3720048A successfully refreshed from Google Patents.
US3720048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor drawn mower
Assignee: Health International Inc
•
Filing: 1971-02-16
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Granted: 1973-03-13
•
Expires: 1991-02-16
Abstract
Abstract A flexible tracked tractor having a mower operatively connected to the rear end thereof. The mower is provided with a ground engaging wheel at the rear end thereof, and it is supported at the front end thereof by a three-point lift hitch which is attached to the rear end of the flexible tracked tractor. The rotary cutter is power driven from a pressurized hydraulic fluid source carried on the tractor. The rotary cutter is operatively connected through a gear type coupling to a hydraulic drive motor which is provided with hydraulic fluid under pressure from said pressurized hydraulic fluid source on said tractor. The threepoint lift hitch includes an upper link having one end pivotally attached to the front end of the mower and the other end pivotally attached to the tractor, a lower link assembly having one end thereof pivotally attached to the tractor and the other end thereof pivotally attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, a lift bar having a lower end pivotally attached to said lower link assembly, a lever pivotally mounted on a horizontal axis on said tractor, and with the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position laterally spaced apart from, and parallel to, the pivot axis of said lever on said tractor, and power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from, and parallel to, the pivotal mounting axes of said lever and said lift bar, wherein when the power means is actuated, the lever is pivoted upwardly from a mowing position to lift said lower link assembly to a raised position.
Inventors
- 👤 J Brazell
- 👤 W Grubb
- 👤 H Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:34
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63
Claims Analysis
Total Claims: 82
Claim 1
Independent Claim
14 words
a lift bar having its lower end pivotally attached to said lower link asseMbly;
Claim 2
Dependent Claim
14 words
a lift bar having its lower end pivotally attached to said lower link asseMbly;
Claim 3
Dependent Claim
152 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; and, f. said means for lifting said lower link assembly includes:
Claim 4
Dependent Claim
152 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; and, f. said means for lifting said lower link assembly includes:
Claim 5
Dependent Claim
307 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; and, f. said means for lifting said lower link assembly includes: 1. a lift bar having its lower end pivotally attached to said lower link asseMbly; 2. a lever pivotally mounted on a horizontal axis on said tractor, and the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position spaced apart from the pivot axis of said lever on said tractor; and, 3. power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the raised position.
Claim 6
Dependent Claim
307 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; and, f. said means for lifting said lower link assembly includes: 1. a lift bar having its lower end pivotally attached to said lower link asseMbly; 2. a lever pivotally mounted on a horizontal axis on said tractor, and the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position spaced apart from the pivot axis of said lever on said tractor; and, 3. power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the raised position.
Claim 7
Dependent Claim
14 words
a lift bar having its lower end pivotally attached to said lower link assembly;
Claim 8
Dependent Claim
14 words
a lift bar having its lower end pivotally attached to said lower link assembly;
Claim 9
Dependent Claim
10 words
a transverse, tubular shaft carried on said lower link assembly;
Claim 10
Dependent Claim
10 words
a transverse, tubular shaft carried on said lower link assembly;
Claim 11
Dependent Claim
13 words
a lift bar having its lower end pivotally attached to said link assembly;
Claim 12
Dependent Claim
13 words
a lift bar having its lower end pivotally attached to said link assembly;
Claim 13
Dependent Claim
24 words
an upper link having one end pivotally attached to the front end of said mower and the other end pivotally attached to the tractor;
Claim 14
Dependent Claim
24 words
an upper link having one end pivotally attached to the front end of said mower and the other end pivotally attached to the tractor;
Claim 15
Dependent Claim
10 words
a transverse, tubular shaft carried on said lower link assembly;
Claim 16
Dependent Claim
10 words
a transverse, tubular shaft carried on said lower link assembly;
Claim 17
Dependent Claim
22 words
an attachment link rotatably mounted on each end of said tubular shaft for attaching the lower link assembly to the implement; and,
Claim 18
Dependent Claim
22 words
an attachment link rotatably mounted on each end of said tubular shaft for attaching the lower link assembly to the implement; and,
Claim 19
Dependent Claim
56 words
a lever provided with means for pivotally mounting the lever on a horizontal pivot mounting axis on said vehicle, and the upper end of said lift bar being pivotally attached to Said lever on a horizontal pivot attachment axis at a position spaced apart from the pivot mounting axis of said lever on said vehicle; and,
Claim 20
Dependent Claim
56 words
a lever provided with means for pivotally mounting the lever on a horizontal pivot mounting axis on said vehicle, and the upper end of said lift bar being pivotally attached to Said lever on a horizontal pivot attachment axis at a position spaced apart from the pivot mounting axis of said lever on said vehicle; and,
Claim 21
Dependent Claim
56 words
a lever provided with means for pivotally mounting the lever on a horizontal pivot mounting axis on said vehicle, and the upper end of said lift bar being pivotally attached to said lever on a horizontal pivot attachment axis at a position spaced apart from the pivot mounting axis of said lever on said vehicle; and,
Claim 22
Dependent Claim
56 words
a lever provided with means for pivotally mounting the lever on a horizontal pivot mounting axis on said vehicle, and the upper end of said lift bar being pivotally attached to said lever on a horizontal pivot attachment axis at a position spaced apart from the pivot mounting axis of said lever on said vehicle; and,
Claim 23
Dependent Claim
22 words
an attachment link rotatably mounted on each end of said tubular shaft for attaching the lower link assembly to the mower; and,
Claim 24
Dependent Claim
22 words
an attachment link rotatably mounted on each end of said tubular shaft for attaching the lower link assembly to the mower; and,
Claim 25
Dependent Claim
45 words
a lever pivotally mounted on a horizontal axis on said tractor, and the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position spaced apart from the pivot axis of said lever on said tractor; and,
Claim 26
Dependent Claim
45 words
a lever pivotally mounted on a horizontal axis on said tractor, and the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position spaced apart from the pivot axis of said lever on said tractor; and,
Claim 27
Dependent Claim
40 words
a lower link assembly having one end thereof pivotally attached to the tractor and the other end thereof pivotally attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link;
Claim 28
Dependent Claim
40 words
a lower link assembly having one end thereof pivotally attached to the tractor and the other end thereof pivotally attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link;
Claim 29
Dependent Claim
18 words
The structure as defined in claim 1, wherein said lift hitch means includes: a. a mechanical down-stop means.
Claim 30
Dependent Claim
93 words
power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the raised position.
Claim 31
Dependent Claim
93 words
power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the raised position.
Claim 32
Dependent Claim
23 words
means for securing the attachment links in rotated positions incrementally adjusted relative to each other to tilt the implement about its longitudinal axis.
Claim 33
Dependent Claim
23 words
means for securing the attachment links in rotated positions incrementally adjusted relative to each other to tilt the implement about its longitudinal axis.
Claim 34
Dependent Claim
18 words
The structure as defined in claim 1, wherein said lift hitch means includes: a. a mechanical up-lock means.
Claim 35
Dependent Claim
14 words
a lift bar having a lower end pivotally attached to said lower link assembly;
Claim 36
Dependent Claim
14 words
a lift bar having a lower end pivotally attached to said lower link assembly;
Claim 37
Dependent Claim
22 words
means for securing the attachment links in positions incrementally adjusted relative to each other to tilt the mower about its longitudinal axis.
Claim 38
Dependent Claim
22 words
means for securing the attachment links in positions incrementally adjusted relative to each other to tilt the mower about its longitudinal axis.
Claim 39
Dependent Claim
97 words
power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said link assembly to a fully raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the fully raised position.
Claim 40
Dependent Claim
97 words
power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said link assembly to a fully raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the fully raised position.
Claim 41
Dependent Claim
98 words
power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a fully raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the fully raised position.
Claim 42
Dependent Claim
98 words
power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from the pivot mounting axis of said lever and the pivot attachment axis of said lift bar, whereby when the power means is actuated in one direction, the lever is pivoted to lift said lower link assembly to a fully raised position and the centerline of the lift bar has passed the center of the pivot mounting axis of said lever to mechanically lock the lift hitch means in the fully raised position.
Claim 43
Dependent Claim
50 words
a lever pivotally mounted on a horizontal axis on said tractor, and with the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position laterally spaced apart from, and parallel to, the pivot axis of said lever on said tractor; and
Claim 44
Dependent Claim
50 words
a lever pivotally mounted on a horizontal axis on said tractor, and with the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position laterally spaced apart from, and parallel to, the pivot axis of said lever on said tractor; and
Claim 45
Dependent Claim
18 words
The structure as defined in claim 1, wherein said lift hitch means includes: a. a mechanical up-stop means.
Claim 46
Dependent Claim
58 words
The structure as defined in claim 1, wherein said lower link assembly includes: a. a pair of arms extending forwardly from said two spaced apart positions on the mower and disposed on opposite sides of the centerline of the tractor, and, b. means for hingedly connecting the front ends of said lower link assembly arms to the tractor.
Claim 47
Dependent Claim
63 words
power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from, and parallel to, the pivotal mounting axes of said lever and said lift bar, wherein when the power means is actuated, the lever is pivoted upwardly from a mowing position to lift said lower link assembly to a raised position.
Claim 48
Dependent Claim
63 words
power means mounted on said tractor and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from, and parallel to, the pivotal mounting axes of said lever and said lift bar, wherein when the power means is actuated, the lever is pivoted upwardly from a mowing position to lift said lower link assembly to a raised position.
Claim 49
Dependent Claim
12 words
The structure defined in claim 1, wherein said lower link assembly includes:
Claim 50
Dependent Claim
35 words
The structure as defined in claim 1, including: a. a scraper blade hingedly mounted on the front of said tractor, and, b. power means mounted on said tractor for raising and lowering said scraper blade.
Claim 51
Dependent Claim
46 words
The structure defined in claim 1 wherein said means for interconnecting said power source and said rotary cutter includes: a. a coupling means attached to said rotary cutter; and, b. a drive means connected to said coupling means and said power source for rotating the cutter.
Claim 52
Dependent Claim
26 words
The structure defined in claim 8 wherein said drive means comprises: a. a hydraulic motor and said power source comprise a source of pressurized hydraulic fluid.
Claim 53
Dependent Claim
16 words
The structure defined in claim 8 wherein said coupling means comprises: a. a gear type coupling.
Claim 54
Dependent Claim
55 words
The structure as defined in claim 10, wherein said gear type coupling includes: a. a first coupling portion attached to said rotary cutter; b. a second coupling portion attached to said drive means; c. means for operatively connecting said first and second coupling portions; and, d. cushion means between said first and second coupling portions.
Claim 55
Dependent Claim
22 words
The structure as defined in claim 11, including: a. a washer mounted between said cushion means and one of said coupling portions.
Claim 56
Dependent Claim
218 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. a lift bar having a lower end pivotally attached to said lower link assembly; d. a lever provided with means for pivotally mounting the lever on a horizontal axis on said vehicle, and with the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position laterally spaced apart from, and parallel to, the pivot axis of said lever on said vehicle; and, e. power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from, and parallel to, the pivotal mounting axes of said lever and said lift bar, wherein when The power means is actuated, the lever is pivoted upwardly to lift said lower link assembly to a raised position.
Claim 57
Dependent Claim
218 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. a lift bar having a lower end pivotally attached to said lower link assembly; d. a lever provided with means for pivotally mounting the lever on a horizontal axis on said vehicle, and with the upper end of said lift bar being pivotally attached to said lever on a horizontal axis at a position laterally spaced apart from, and parallel to, the pivot axis of said lever on said vehicle; and, e. power means adapted to be mounted on said vehicle and being pivotally connected to said lever on a horizontal axis at a point triangularly spaced from, and parallel to, the pivotal mounting axes of said lever and said lift bar, wherein when The power means is actuated, the lever is pivoted upwardly to lift said lower link assembly to a raised position.
Claim 58
Dependent Claim
33 words
The structure as defined in claim 13, wherein: a. said lever is vertically disposed and triangularly shaped, with said horizontal pivotal axes being each disposed at one of the corners of the lever.
Claim 59
Dependent Claim
31 words
The structure as defined in claim 13, wherein: a. said power means comprises a hydraulic cylinder pivotally attached to the vehicle and having a cylinder rod pivotally attached to said lever.
Claim 60
Dependent Claim
18 words
The structure as defined in claim 13, including: a. means for locking the implement in a raised position.
Claim 61
Dependent Claim
108 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and operatively attached to said mower for supporting the front end thereof in a mowing position, and for pulling the mower and for lifting the mower to various positions raised above the ground; and, f. said three-point lift hitch means includes,
Claim 62
Dependent Claim
108 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and operatively attached to said mower for supporting the front end thereof in a mowing position, and for pulling the mower and for lifting the mower to various positions raised above the ground; and, f. said three-point lift hitch means includes,
Claim 63
Dependent Claim
33 words
The structure as defined in claim 17, wherein: a. said lever is vertically disposed and triangularly shaped, with said horizontal pivotal axes being each disposed at one of the corners of the lever.
Claim 64
Dependent Claim
31 words
The structure as defined in claim 17, wherein: a. said power means comprises a hydraulic cylinder pivotally attached to the tractor and having a cylinder rod pivotally attached to said lever.
Claim 65
Dependent Claim
24 words
The structure as defined in claim 17, wherein said three-point lift hitch means includes: a. means for locking the mower in a raised position.
Claim 66
Dependent Claim
122 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. means for lifting said lower link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; and, d. said means for lifting said lower link assembly including,
Claim 67
Dependent Claim
122 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. means for lifting said lower link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; and, d. said means for lifting said lower link assembly including,
Claim 68
Dependent Claim
13 words
The structure as defined in claim 21, including: a. a mechanical up-stop means.
Claim 69
Dependent Claim
32 words
The structure as defined in claim 21, wherein: a. said means for lifting said lower link assembly includes a mechanical up-lock means for locking the lift hitch in said fully raised position.
Claim 70
Dependent Claim
42 words
The structure as defined in claim 21, wherein: a. said means for lifting said lower link assembly is constructed and arranged so that said implement can float upwardly and downwardly relative to a vehicle as it is being pulled by a vehicle.
Claim 71
Dependent Claim
13 words
The structure as defined in claim 21, including: a. a mechanical down-stop means.
Claim 72
Dependent Claim
66 words
The structure as defined in claim 21, wherein said lower link assembly includes: a. a pair of arms extending forwardly from said two spaced apart positions on the implement and disposed on opposite sides of the centerline of the vehicle; and, b. said means for attachment to a vehicle includes means for hingedly connecting the front ends of said lower link assembly arms to the vehicle.
Claim 73
Dependent Claim
23 words
The structure defined in claim 21, wherein said lower link assembly includes: a. tilt means for tilting the implement about its longitudinal axis.
Claim 74
Dependent Claim
133 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. means for lifting said lower link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; d. said lower link assembly including tilt means for tilting the implement about its longitudinal axis; and, e. said tilt means including,
Claim 75
Dependent Claim
133 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. an upper link including means for hingedly attaching one end to a vehicle and means for hingedly attaching the other end to the front end of an implement at a central position; b. a lower link assembly including means for attachment to the front end of an implement at two spaced apart positions below the attachment position of the upper link and means for attachment to a vehicle; c. means for lifting said lower link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; d. said lower link assembly including tilt means for tilting the implement about its longitudinal axis; and, e. said tilt means including,
Claim 76
Dependent Claim
163 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; f. said lower link assembly including tilt means for tilting the mower about its longitudinal axis; and, G. said tilt means including,
Claim 77
Dependent Claim
163 words
In a tractor drawn mower, the combination comprising: a. a flexible tracked tractor; b. a mower provided with a rotary cutter and being supported at the rear end thereof by a ground engaging means; c. a power source carried on said tractor; d. means for interconnecting said power source and said rotary cutter for rotating the cutter; e. a three-point lift hitch means carried by said tractor and having an upper link attached to said mower at a centered position at the front end of the mower, a lower link assembly attached to the front end of the mower at two spaced apart positions below the attachment position of the upper link, and including means for lifting said lower link assembly to a raised position where the lift hitch means is mechanically locked and the mower is in a raised position; f. said lower link assembly including tilt means for tilting the mower about its longitudinal axis; and, G. said tilt means including,
Claim 78
Dependent Claim
78 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. a link assembly including means for attachment to the front end of an implement at two spaced apart positions and means for attachment to a vehicle; b. means for lifting said link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; and, c. said means for lifting said link assembly including,
Claim 79
Dependent Claim
78 words
In an implement lift hitch for use on a powered vehicle, the combination comprising: a. a link assembly including means for attachment to the front end of an implement at two spaced apart positions and means for attachment to a vehicle; b. means for lifting said link assembly to a raised position where the lift hitch is locked and the implement is held in a fully raised position; and, c. said means for lifting said link assembly including,
Claim 80
Dependent Claim
64 words
The structure as defined in claim 30, wherein said link assembly includes: a. a pair of arms extending forwardly from said two spaced apart positions on the implement and disposed on opposite sides of the centerline of the vehicle; and, b. said means for attachment to a vehicle includes means for hingedly connecting the front ends of said link assembly arms to the vehicle.
Claim 81
Dependent Claim
22 words
The structure defined in claim 30, wherein said link assembly includes: a. tilt means for tilting the implement about its longitudinal axis.
Claim 82
Dependent Claim
67 words
The structure defined in claim 32, wherein said tilt means includes: a. a transverse, tubular shaft carried on said link assembly; b. an attachment link rotatably mounted on each end of said tubular shaft for attaching the link assembly to the implement; and, c. means for securing the attachment links in rotated positions incrementally adjusted relative to each other to tilt the implement about its longitudinal axis.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |