发明名称 Adjustable skateboard ramp
摘要 An adjustable ramp includes a ramp member supported in an adjustable suspensory frame. Adjustment of the suspensory frame changes the angle of incidence of the ramp member to the supporting surface on which the ramp is located. A resilient ramp member is provided in one embodiment which is maintained in curvilinear, flexed attitude on the supporting frame by the moveable connections of said ramp member to said suspensory frame.
申请公布号 US4129916(A) 申请公布日期 1978.12.19
申请号 US19780890454 申请日期 1978.03.27
申请人 SCHLESINGER, TODD R.;SHAFFER, WILLIAM L. 发明人 SCHLESINGER, TODD R.;SHAFFER, WILLIAM L.
分类号 A63C19/10;E01C13/00;(IPC1-7):E01D1/00 主分类号 A63C19/10
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