This invention relates to utility type wheels and sliding fixtures using ball bearings and needle bearings which needs to be lubricated and maintained by industrial grade oils and grease, industrial oils and grease collect dust and grit resulting wear and failure, in addition to that industrial grade oils and grease are not environmentally friendly, my invention eliminate the need for industrial lubricants while increasing service life and minimize sliding friction force.
In accordance with the present invention, a thin sheet of metal like bronze or brass, a “dog bone” shaped pattern cut out through metal sheet, “dog bone” pattern is shaped like two circular cavities interconnected to each other by a channel such that the areas of each circular cavity and interconnected channel are equal to one another, in addition, a thin sheet of Teflon pressed and flown to occupy directly inside “dog bone” pattern cavities. In combination bearing sleeve assembly with metal sheet containing Teflon sheet inside “dog bone” cavities could be flexed and turn to cylindrical shape in order to be installed between a rotating shaft and a housing bore like in trolleys and pulleys.
Having thus described the invention in general terms, references will now be made to the description below taken in conjunction with the accompanying drawings wherein:
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