| 摘要 |
A swivel chair including a swivel-mounting assembly having a lower plate, and an upper plate, and bearings for rotatably mounting the upper plate to the lower plate. The lower plate and the upper plate defining an annular gap therebetween cooperating with the interior of the swivel-mounting assembly. The improvement includes an annular gasket having a first portion that receives the bearings is positioned in-between the plates. The annular gasket further having a second portion depending from the first. The second portion includes upper and lower sections extending from the first portion and have an inside facing section being in partial surface-to-surface contact with the lower and upper plates. Thus, the annular gasket prevents foreign particles from entering into the interior of the swivel-mounting assembly.
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