发明名称 Flexible and Extendable Spiral Wound Hose and Method Therefor
摘要 An expandable hose is provided formed of a sidewall formed of a spirally wound flexible member which defines an axial passageway surrounding a center axis of the formed hose. Both side edges of the flexible member in the spirally wound position are engaged with a cap member which provides a skeletal structure to maintain the axial passageway open and to bias the hose back to a collapsed length from the extended length. A fold formed in the spirally wound flexible member allows for increased distance between the two side edges and an increased maximum extended length. A telescopic pole engaged with the formed hose provides an improved extendable vacuuming tool.
申请公布号 US2013284302(A1) 申请公布日期 2013.10.31
申请号 US201313927052 申请日期 2013.06.25
申请人 CASTRO RAUL 发明人 CASTRO RAUL
分类号 F16L11/11;F16L11/118 主分类号 F16L11/11
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