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US 2004/0114993 A1Published application
Articulated pin joint for a track chain
AssigneeCaterpillar Inc.
InventorsPeter W. Anderton, Daniel D. Angot, Steve L. Arianoutsos, J. Christopher Barnes, David G. Kupper
Life of this patent
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Abstract
An improved articulated pin joint for a track chain used on track laying work machines is provided. The articulated pin joint includes a plug positioned in a central cavity of a track pin. The plug includes an axial passage in which a needle can be inserted to inject grease into the central cavity. The invention facilitates replenishing grease in the field without removing the track chain from the track laying work machine.
Claims6
An articulated pin joint for a track chain, the articulated pin joint comprising:
- a track pin defining a longitudinal axis, said track pin having an outer surface, a central cavity and a cross bore extending from said outer surface to said central cavity;
- a bushing having an inner surface being disposed about said outer surface of said track pin;
- and
- a plug being positioned within said central cavity of said track pin, said plug having an axial passage extending therethrough and being compressingly closed when said plug is positioned within said central cavity.
1 more element
Dependencies are inferred from the claim text.