Strength Track Bushing
First Claim
1. A bushing (150), comprising:
- a hollow cylindrical wall (163) having an inner diameter (166) and an outer diameter (176); and
an annular cavity (164) extending circumferentially around the inner diameter (166) of the cylindrical wall (163), the cylindrical wall (163) having a thickness (174) of A and the annular cavity (164) having a width (170) of B, the ratio of A to B being at least about 1 or more to about 1.
1 Assignment
0 Petitions
Accused Products
Abstract
An improved strength track bushing (150) is disclosed. The bushing (150) may be used as a bearing around a track pin (144) interconnecting shoes (132) of a track (120) on a track-type tractor (100). The bushing (150) may include a hollow cylindrical wall (163) having an inner diameter (166), an outer diameter (176), and an annular lubrication cavity (164) circumnavigating the inner diameter (166) of the hollow cylindrical wall (163). The bushing (150) includes specific dimensional ratios between the width (174) of the cylindrical wall (163), the size of the inner diameter (166), the size of the outer diameter (176), the width (170) of the annular cavity (164), and the depth (172) of the annular cavity (164). By appropriately sizing such dimensions, the strength of the bushing and thus its ability to avoid cracking in use is greatly improved.
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Citations
20 Claims
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1. A bushing (150), comprising:
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a hollow cylindrical wall (163) having an inner diameter (166) and an outer diameter (176); and an annular cavity (164) extending circumferentially around the inner diameter (166) of the cylindrical wall (163), the cylindrical wall (163) having a thickness (174) of A and the annular cavity (164) having a width (170) of B, the ratio of A to B being at least about 1 or more to about 1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A bushing (150) having a hollow cylindrical wall (163) with an inner diameter (166), an outer diameter (176), and an annular lubrication cavity (164), the bushing (150) having a Clarke Factor of less than about 1.
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18. A track-type tractor (100), comprising:
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a chassis (102); an engine (104) supported by the chassis (102); an undercarriage (118) supporting the chassis (102), the undercarriage (118) including at least one rotatable track (120) operatively connected to the engine (104), the track (120) including a plurality of shoes (132); a plurality of track pins (144) linking the shoes (132) together, each track pin (144) including a substantially cylindrical housing (154) having a central reservoir (156) and a lubrication channel (160) extending through the housing (154); and a bushing (150) surrounding each track pin (144), each bushing (150) including a substantially cylindrical housing (163) having an annular cavity (164) on an inner diameter (166), the bushing (150) have a length (180) of F and the annular cavity (164) having a width (170) of B, the ratio of F to B being about 5 or more to about 1. - View Dependent Claims (19, 20)
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Specification