发明名称 Removable snow pole insert
摘要 A snow pole extension device for attachment to road side delineators wherein at least a section of the delineator includes a tubular cross section and opening having a substantially uniform geometric configuration. The device includes an insert coupling for attachment to a base end of the snow pole to facilitate its insertion within the tubular opening of the delineator. This insert coupling is configured as a sleeve member having a tubular opening similar in geometric configuration with the external configuration of the snow pole to facilitate snug, friction fit attachment. The sleeve member is formed with an exterior configuration and dimension sufficiently small to enable insertion and retention of the sleeve member therein by means of a tight, frictional fit.
申请公布号 US4997307(A) 申请公布日期 1991.03.05
申请号 US19890441254 申请日期 1989.11.27
申请人 SCHMANSKI, DONALD W. 发明人 SCHMANSKI, DONALD W.
分类号 E01F9/011;E01F9/018 主分类号 E01F9/011
代理机构 代理人
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