发明名称 Bird feeder having lower movable shroud
摘要 A squirrel proof bird feeder wherein there is provided a lower movable shroud which extends about a lower portion of the feed container having feed access openings therein, a spring member biasing the shroud to a position wherein feed container access openings and shroud access openings are substantially aligned while permitting the shroud access opening to move out of alignment with the feed container access opening when a predetermined weight is placed on the shroud. An adjustment is provided for adjusting the weight required to move the shroud.
申请公布号 US6543384(B2) 申请公布日期 2003.04.08
申请号 US20020056259 申请日期 2002.01.11
申请人 COTE PAUL 发明人 COTE PAUL
分类号 A01K39/01;(IPC1-7):A01K39/01 主分类号 A01K39/01
代理机构 代理人
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