Bearings – Linear bearing – Ball bearing for drawer
Patent
1989-06-14
1990-05-01
Footland, Lenard A.
Bearings
Linear bearing
Ball bearing for drawer
3123411, F16C 2904
Patent
active
049213598
ABSTRACT:
There is provided a slide rail assembly, comprising an elongated inner rail and similarly elongated outer rail each having a U-shaped section and a pair of rounded lateral edge portions arranged vis-a-vis with the corresponding respective lateral edge portions of the other rail as well as a plurality of revolving bodies held between the juxtaposed rounded edge portions of the inner and outer rails, wherein the inside of said juxtaposed rounded lateral edge portions have a radius of curvature which is identical with that of the revolving objects so that the latter are arranged freely revolvably between the juxtaposed lateral edge portions with an appropriate space provided between any two neighboring revolving objects and each of the inner and the outer rails further comprises an intermediate rounded grooves running along the longitudinal axis of the rail to hold a number of intermediate revolving objects between the pair of intermediate rounded grooves, the inside of said rounded grooves and said intermediate revolving objects having an identical radius of curvature and said intermediate revolving objects being arranged in such a manner that an appropriate space is provided between any two neighboring objects and hence freely revolve. Such a slide rail assembly can be effectively used to eliminate any undesirable variances of the distance between the inner and outer rails.
REFERENCES:
patent: 2606090 (1952-08-01), Straubel
patent: 3912341 (1975-10-01), Stein
patent: 4194793 (1980-03-01), Offermans
patent: 4779999 (1988-10-01), Lautenschlager
Footland Lenard A.
Sugatsune Industrial Co. Ltd.
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