PURPOSE: To prevent decrease in discharge performance based on increase in leakage from a low to a high pressure side as well as seizure by making a side face of gear slide on a face of 'Teflon(R)' resin-made sheet of pressure recieving plate when water sucked in from an intake side and discharged from a discharge side through rotation of gear.
CONSTITUTION: A shaft insertion-fitting hole 2 is provided at the central part of each gear 1 which is stored in an outer case not shown. A pressure receiving plate 3 is composed of a 'Teflon(R)' resin-made sheet 4, an adhesive agent 5, aluminium plate 6 and shim plate 7. With the constitution, when the gear 1 rotates, water taken in from an intake side is discharged from a discharge side. At this time, a side of the gear 1 slides on a face of the sheet 4. It is thus possible to attain a predetermined object.
ASANO YOICHIRO
OKA TOSHIAKI
UEDA TAKAYUKI
| JP53150503B | ||||
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| JP60147786B |