发明名称 Temporary storage mast support
摘要 A temporary mast support and storage structure for a detachable mast for a wind surfing board or the like having an attached sail and boom structure. The structure includes a first hollow, elongated cylindrical sleeve having a radially outwardly extending flange whereby the flange adapts the sleeve to be emplaced in sand or concrete and the flange being further adapted to be coupled with a vehicular mounted trailer hitch. A second hollow, elongated cylindrical sleeve having a radially outwardly extending flange is provided the radius of the cylinder of the second sleeve being lesser than the radius of the cylinder of the first sleeve such that the second sleeve fits within the first sleeve with the flange of the second sleeve overlying, at least in part the flange of the first sleeve. A plurality of stops on the surface of the flange of the first sleeve facing the flange of the second sleeve and a stop engaging projection on the surface of the flange of the second sleeve facing spacially outwardly such that the arcuate spacing of the stops limits the rotational movement of the second sleeve relative to the first sleeve by engaging the projection. The second sleeve being hollow receives the mast with sail and boom attached telescopingly therein.
申请公布号 US4805545(A) 申请公布日期 1989.02.21
申请号 US19870053878 申请日期 1987.05.26
申请人 GROTH, JERRY 发明人 GROTH, JERRY
分类号 B63B35/79;(IPC1-7):B63H9/04 主分类号 B63B35/79
代理机构 代理人
主权项
地址