DROP-TYPE BIRD WATERER Russian patent published in 2002 - IPC

FIELD: bird keeping equipment. SUBSTANCE: waterer has vertical cylindrical casing of thermoplastic material with central through channel of variable diameter, metal valve seat with central through channel axially aligned with casing channel. Thermoplastic bushing is located in lower part of through channel and provided with central through channel axially aligned with casing and having upper cylindrical and lower conical parts. Metal valve seat is made in the form of washer and positioned between thermoplastic casing and thermoplastic bushing, in axially aligned relation with respect to it. Metal ball is positioned in metal valve seat. Valve needle is made in the form of pin with head. Valve needle head surface facing toward metal ball is made convex and positioned on bushing projection at cylindrical and conical parts junction zone, in spaced relation with respect to metal ball and internal cylindrical bushing wall. Accumulating cavity is positioned higher than valve seat. Conical external thread is formed on casing. EFFECT: simplified assembling and reduced metal usage. 4 cl, 1 dwg