US3915036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track bushing turning tool
Assignee: Caterpillar Inc
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Filing: 1973-04-09
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Granted: 1975-10-28
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Expires: 1993-04-09
Abstract
Abstract Disclosed herein is apparatus for rotating the bushings of an assembled and in-place track of a tractor to present new bushing wear areas to the sprockets which engage these bushings. The apparatus includes a clamp member which is capable of applying rotative force to the bushing to be rotated and means for providing such necessary force.
Inventors
- 👤 Harold W Vanlandingham
- 👤 Roger L Boggs
- 👤 David A Bullock
- 👤 James N Maytum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:11
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/0078; B25B21/00; B25B21/002; B62; B62D; B62D55/00; B62D55/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
For use with a tractor track including a series of interconnected track links and a plurality of bushings associated with the track links, said bushings being arranged for engagement between teeth of a track driving sprocket, each bushing having a sprocket engaging area which is normally substantially unchanging as the tractor track is operated, apparatus for rotating a bushing to define a new sprocket-engaging area thereof with the track in its substantially assembled state comprising: arm means; means associated with the bushing and connected to the arm means so that upon application of force to the arm means about the bushing, rotative force is applied to the bushing through the means associated with the bushing; wherein the means associated with the bushing comprise removable means positionable about the bushing in close proximity thereto, and an insert associated with the means positionable about the bushing and movable inwardly and outwardly of the bushing, said insert being movable inwardly into the worn area of the bushing with the means positionable about the bushing so positioned, and means for fixing the insert in said inward position, wherein the means positionable about the bushings comprise first and second pivotally connected members pivotable outwardly of each other to allow removal thereof from the bushing, and pivotable inwardly of each other to be positioned about the bushing, and means for fixing the pivotally connected members together in their inwardly pivoted positions about the bushing.
Claim 2
Dependent Claim
238 words
For use with a tractor track including a series of interconnected track links and a plurality of bushings associated with the track links, said bushings being arranged for engagement between teeth of a track driving sprocket, each bushing having a sprocket engaging area which is normally substantially unchanging as the tractor track is operated, apparatus for rotating a bushing to define a new sprocket-engaging area thereof with the track in its substantially assembled state comprising: arm means; means associated with the bushing and connected to the arm means so that upon application of force to the arm means about the bushing, rotative force is applied to the bushing through the means associated with the bushing; wherein the means associated with the bushing comprise removable means positionable about the bushing in close proximity thereto, and an insert associated with the means positionable about the bushing and movable inwardly and outwardly of the bushing, said insert being movable inwardly into the worn area of the bushing with the means positionable about the bushing so positioned, and means for fixing the insert in said inward position, wherein the means positionable about the bushings comprise first and second pivotally connected members pivotable outwardly of each other to allow removal thereof from the bushing, and pivotable inwardly of each other to be positioned about the bushing, and means for fixing the pivotally connected members together in their inwardly pivoted positions about the bushing.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 and means for applying said force to the arm means comprising extensible and retractable means, and further comprising means for applying the reaction force thereof to a bushing immediately adjacent the bushing being rotated.
Claim 4
Dependent Claim
29 words
The apparatus of claim 2 wherein the extensible and retractable means comprise a removable jack extending between the bushing immediately adjacent the bushing being rotated and the arm means.
Claim 5
Dependent Claim
37 words
The apparatus of claim 1 wherein the insert is in sliding relation with the first pivotally connected member and movable substantially radially of the bushing with the first and second pivotally connected member positioned about the bushing.
Claim 6
Dependent Claim
43 words
The apparatus of claim 4 wherein the insert defines a surface adapted to contact the surface of the bushing in the worn area thereof, the contacting surface of the insert being shaped to conform generally to the contacting surface of the worn area.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |