Patent ID: 6142588
Filing Date: 2000-11-07
Classification: B62D

Abstract:
A drive chain comprising:a plurality of pairs of link elements, the elements of each pair extending longitudinally parallel to each other and having relatively widely spaced outer ends unitarily formed with transversely open and confronting blind bores and relatively closely spaced inner ends formed with axially throughgoing and transversely aligned bores, each pair of inner ends lying between a respective pair of outer ends with the bores coaxial;respective pins defining respective transverse axes, each fitting tightly in the bores of the inner ends, and having ends rotatably seated in the respective bores of the respective outer ends;respective sleeves surrounding the pins between the respective inner ends;respective outer seal rings between the outer ends and the pin ends and defining with the pin ends outer compartments;respective inner seal rings between the inner ends and the sleeve and defining between the respective pin, sleeve, and inner ends an inner compartment; andrespective bodies of lubricant at least partially filling the compartments.