发明名称 Self-adjusting collapsible crutch
摘要 A self-adjusting crutch containing a central portion having both a fixed and a moveable central post, one of which nests within the other. A prepositionable height fastener cooperates with a coupling collar, both of which are disposed on the central portion to predetermine the amount of extension. When the fastener and coupler are in cooperation, the leg can be extended and retracted repeatedly the exact same distance. An improved hand grip is also disclosed.
申请公布号 US5025820(A) 申请公布日期 1991.06.25
申请号 US19900597838 申请日期 1990.10.15
申请人 GAMPER, WILLIAM B. 发明人 GAMPER, WILLIAM B.
分类号 A61H3/02 主分类号 A61H3/02
代理机构 代理人
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