Bearings – Linear bearing – Ball bearing
Patent
1992-08-26
1993-09-28
Hannon, Thomas R.
Bearings
Linear bearing
Ball bearing
384 56, F16C 2904
Patent
active
052482030
ABSTRACT:
A retainer for use in a linear motion rolling contact guide unit including a rail, a slider and a plurality of rolling members interposed between the rail and the slider is provided. The retainer is generally comprised of an elongated rectangular plate having a predetermined thickness and width. The retainer plate is formed with a plurality of pockets for receiving therein rolling members so as to keep the rolling members in position. In accordance with the present invention, the pockets have a first size in the transverse direction slightly larger than the characteristic size, e.g., diameter in the case of balls, of rolling members and a second size in the longitudinal direction substantially larger than the first size so that the pockets are generally in the shape of a slot with either a circular pocket provided in a central portion of the plate or the second size being large enough to accommodate two balls with a separator therebetween. With this structure, the sliding resistance of the retainer and thus the linear motion guide unit is significantly reduced.
REFERENCES:
patent: 2887344 (1959-05-01), Hause
patent: 3145065 (1964-08-01), Cator
Hannon Thomas R.
Nippon Thompson Co. Ltd.
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