Ball bearing construction with tilt compensation
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 9, 2021
Grant Date -
Sep 13, 2018
app pub date -
Sep 20, 2016
filing date -
Sep 22, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A dental handpiece and method of turbine support therein, comprises a turbine wheel having a rotor shaft rotatably supported by a housing via ball bearings, and configured to rotationally drive a clamping chuck, at least one of the ball bearings including, an inner ring arranged on the rotor shaft, the inner ring having a raceway, an outer ring, having an outer raceway movably supported by the housing, and balls arranged between and guided by the inner and outer raceways. The raceway of the inner ring, in cross section, has a concave shape with a curvature corresponding to a radius of the balls. Optionally, the raceway of the outer ring in cross section, has, in a central area, a first curvature with a first radius and, adjoining the central area, a second curvature with a second radius, the first radius being smaller than the second. Optionally, the raceway of the outer ring has a substantially parabolic profile.
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