发明名称 EXTENDABLE/RETRACTABLE SUPPORT COLUMN
摘要 An extendable and retractable column which is formed from at least three linked sections. The linked sections include a plurality of individual sections linked end to end. As the linked sections are extended, each of the individual sections of the linked chains engage individual sections of adjacent linked chains to form a column. As the linked sections are retracted, each of the individual sections of the linked chains disengage from the individual section of the adjacent linked sections and the individual linked sections may be rolled up for compact storage.
申请公布号 WO2004094790(A2) 申请公布日期 2004.11.04
申请号 WO2004US11763 申请日期 2004.04.16
申请人 TOWER SOLUTIONS, LLC;COLMAN, MARK;NORRIS, JOHN 发明人 COLMAN, MARK;NORRIS, JOHN
分类号 C12P21/06;F01L 主分类号 C12P21/06
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