发明名称 Shade roller
摘要 A shade roller includes a roller, a first tube slidably received within the roller and a second tube having a part of the first tube securely received therein. Due to the extendable characteristics of the first tube and an outer diameter of the second tube being manufactured to be the same as that of the roller, a user is able to adapt to different widths of different windows and roll up or down a shade which is originally wound around the shade roller evenly.
申请公布号 US5881792(A) 申请公布日期 1999.03.16
申请号 US19970919532 申请日期 1997.08.28
申请人 CHENG, LI-MING 发明人 CHENG, LI-MING
分类号 E06B9/44;(IPC1-7):A47G5/02 主分类号 E06B9/44
代理机构 代理人
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