发明名称 Back flow check and self-cleaning spring biased waterer valve
摘要 This invention relates to the watering of poultry with a low pressure water supply and provides sanitary functions of filtering water supplied directly into the waterers and to check both supply and back flow while providing a self-cleaning action, the structure of this invention being incorporated in a valve body which serves to mount the waterer onto a manifold to be independently operable by animal operation and automatically closing when the animal wants are satisfied.
申请公布号 US4282831(A) 申请公布日期 1981.08.11
申请号 US19780959726 申请日期 1978.11.13
申请人 NILSEN, NORMAN P. 发明人 NILSEN, NORMAN P.
分类号 A01K39/02;(IPC1-7):A01K39/02 主分类号 A01K39/02
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