发明授权
US09497929B2 Animal feeder having a retractable feeding surface 有权
动物饲养机具有可缩回的饲养面

Animal feeder having a retractable feeding surface
摘要:
A feeder for animals has an enclosure that receives feed material. The enclosure has at least one vertical feed surface that retains the feed material and provides access to animals to the feed material. The vertical feed surface is movable in a horizontal direction. A biasing device is attached to the vertical feed surface. The biasing device moves the vertical feed surface horizontally as the feed material is depleted within the enclosure.
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