US3812979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lift boom for a front loader tractor
Assignee: Individual
•
Filing: 1973-04-12
•
Granted: 1974-05-28
•
Expires: 1993-04-12
Abstract
Abstract The lift boom is of a generally T-shaped configuration, the stem of the T-boom being provided with a hook to which any suitable load may be attached. The head of the T-boom is seated within a front loader tractor''s bucket in the floor/rear wall corner. An upper cable is attached at one end adjacent the hook end of the boom''s stem, and is passed over the bucket''s top edge and attached at the other end to the bucket. A lower cable is attached at one end to the boom''s stem intermediate the ends thereof, and is passed beneath the bucket''s floor and also attached at the other end to the bucket. The lower cable is provided with a turnbuckle assembly. The turnbuckle assembly is adjustable when the boom is seated in the bucket to provide a suitable tension on both the upper and the lower cables, thereby maintaining the T-boom in the initial assembled relation with the bucket no matter what the spatial orientation of the bucket (and, hence, the boom) as set by the tractor, and no matter what the load being carried by the boom.
Inventors
- 👤 J Leihgeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:22
CPC Classifications
B; B66; B66C; B66C13/00; B66C13/18; B66C2700/00; B66C2700/06; B66C2700/062; G; G01; G01R; G01R31/00; G01R31/36; G01R31/378; G01R31/379
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
The apparatus combination comprising: a lift boom and a front loader tractor, said tractor including an open-mouth bucket having a rear wall and opposite side walls, said bucket being movable up and down relative to ground level by a lift assembly and pivotable about a pivot axis between upright and inverted positions by a pivot assembly, said lift boom including a head and a stem of generally T-shaped configuration, the head of said lift boom being seated inside said bucket against said rear wall thereof, and the stem of said lift boom extending outwardly from said bucket, hook means connected to said stem for connecting a payload to said boom, and cable means interconnecting the bucket and the stem of said lift boom at a point forward of the mouth of said bucket, said cable means serving to maintain said lift boom in immobile operational assembly with said bucket in a vertical plane, thereby permitting said hook means to be oriented relative to said ground level as desired by an operator through the use of said lift and pivot assemblies.
Claim 2
Independent Claim
180 words
The apparatus combination comprising: a lift boom and a front loader tractor, said tractor including an open-mouth bucket having a rear wall and opposite side walls, said bucket being movable up and down relative to ground level by a lift assembly and pivotable about a pivot axis between upright and inverted positions by a pivot assembly, said lift boom including a head and a stem of generally T-shaped configuration, the head of said lift boom being seated inside said bucket against said rear wall thereof, and the stem of said lift boom extending outwardly from said bucket, hook means connected to said stem for connecting a payload to said boom, and cable means interconnecting the bucket and the stem of said lift boom at a point forward of the mouth of said bucket, said cable means serving to maintain said lift boom in immobile operational assembly with said bucket in a vertical plane, thereby permitting said hook means to be oriented relative to said ground level as desired by an operator through the use of said lift and pivot assemblies.
Claim 3
Dependent Claim
50 words
The apparatus of claim 1 wherein said cable means includes a member extending from said boom outwardly of said bucket to said bucket and having a turnbuckle assembly allowing the tension on said cable means to be suitably adjusted for maintaining said boom in immobile operational assembly with said bucket.
Claim 4
Dependent Claim
63 words
The apparatus of claim 2 wherein said cable means includes an upper cable and a lower cable, each attached to the lift boom''s stem outwardly of said bucket at one end, and said lower cable being adapted to pass under the bottom edge of said bucket and connect therewith at its other end, said turnbuckle assembLy being connected with one of said cables.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3 including shields interposed on said cable at points of potential chaffing of said cable on said bucket''s structure.
Claim 6
Dependent Claim
45 words
The apparatus of claim 3 wherein said cable means includes at least a pair of upper cables each attached to the lift boom''s stem at one end, the other end of each of said cables being connected with said bucket adjacent said opposite side walls.
Claim 7
Dependent Claim
60 words
The apparatus of claim 1 wherein said head is tubular, and including an extension in telescoped assembly with at least one end of said tubular head, said extension being extendable from said head so as to allow said head to extend between said side walls, thereby providing lateral stability to said boom when said boom is seated in said bucket.
Claim 8
Dependent Claim
31 words
The apparatus of claim 6 including an extension telescoped into each end of said head, thereby allowing said stem to be located at a desired plane between said bucket''s side walls.
Claim 9
Dependent Claim
14 words
The apparatus of claim 7 wherein said plane is midway between said side walls.
References Cited (Backward Citations)
US2818981A
Cited
US3092259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |