发明名称 Window blind with safety pull cord
摘要 An improved window blind wherein the pull cord has an inner element and an outer element, the inner element performing the lifting and lowering function of the pull cord, and the longitudinally compressible outer element encompassing the inner element and being either affixed to the slats or restricted from being pulled through the cord holes to prevent outward pulling of the pull cord from the window blind to create a hazardous loop.
申请公布号 US5743319(A) 申请公布日期 1998.04.28
申请号 US19970779842 申请日期 1997.01.07
申请人 CHRISTOPHERSON, HERMAN P. 发明人 CHRISTOPHERSON, HERMAN P.
分类号 E06B9/326;E06B9/384;(IPC1-7):E06B9/30 主分类号 E06B9/326
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