Bearing system with self-lubrication features, seals, grooves and slots for maintenance-free operation
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United States of America Patent
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Jul 21, 2020
Grant Date -
Nov 16, 2017
app pub date -
May 15, 2017
filing date -
May 16, 2016
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Abstract
A maintenance-free bearing system having self-lubricating features, seals, grooves and slots for use in a cushion hitch assembly for a hitch pull scraper vehicle. An interconnected bearing linkage system having two or more horizontal two-axis combined journal and thrust bearings with self-lubricating liners therein, two or more vertical single-axis sleeve bearings with self-lubricating liners therein and one or more vertical thrust bearing with self-lubricating liners therein, that cooperate with one another to accommodate vertical and horizontal angular movement relative to one another.
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