发明名称 Squirrell-proof bird feeder
摘要 An anti-squirrel bird feeder comprising a feed cylinder and an anti-squirrel carousel. The carousel is spring biased in an open position wherein feed opening in the feed cylinder may be accessed by birds resting on perches disposed on the carousel. Upon receiving a weight above a predetermined amount, the spring bias is overcome resulting in the carousel sliding down the cylinder until a shut-off flanges blocks access to the feed openings. The spring force at which the feeder will close may be made adjustable and the feed openings may empty into a trough having weep holes for removing water from the feed.
申请公布号 US2008210172(A1) 申请公布日期 2008.09.04
申请号 US20070868115 申请日期 2007.10.05
申请人 WAIKAS JACK P 发明人 WAIKAS JACK P.
分类号 A01K39/014 主分类号 A01K39/014
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