发明名称 Swivel apparatus
摘要 Swivel apparatus for a chair or the like comprising nonmetallic bearing members rotatably supporting a swivel plate. The bearing members are mounted in fixed positions on a support and each has a laterally disposed arcuate groove located in interfitting engagement with a circular projecting extension on the chair mounted swivel plate so as to rotatably support the swivel plate.
申请公布号 US4098485(A) 申请公布日期 1978.07.04
申请号 US19760702137 申请日期 1976.07.02
申请人 HOOVER BALL AND BEARING COMPANY 发明人 MIZELLE, NED W.
分类号 A47C3/18;(IPC1-7):F16M13/00 主分类号 A47C3/18
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