| 摘要 |
A swivel construction and method of making the same are provided, the construction comprising a body member and an adaptor member, each member having opposed ends and having a passage passing through the ends thereof, one end of the body member and one end of the adaptor member being disposed in telescoped relation, the construction having a retainer disposed between the telescoped ends and tending to hold the members in the telescoped relation while permitting swivel movement therebetween, the construction having a seal disposed between the telescoped ends and tending to seal the telescoped ends together while permitting swivel movement therebetween, the construction having a bearing disposed between the telescoped ends and intermediate the retainer and the seal, the construction having structure for causing the seal to leak a certain amount after the retainer has worn away the bearing a certain amount but is still maintaining the one ends in the telescoped relation thereof.
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