Patent ID: 6675994
Filing Date: 2004-01-13
Classification: B05B,F16K

Abstract:
A fluid squirt gun comprising a linear flow path provided in a barrel, a nozzle at a tip end of said flow path, a valve seat provided in said flow path, a valve element disposed for movement in an axial direction of said flow path to open and close said valve seat, a spring for pressing said valve element in a valve-closing direction, and a trigger for opening and closing said valve element,wherein said valve element includes a forward pressure receiving face on which fluid in said flow path acts in a valve-opening direction in a closed state of a valve and a reverse pressure receiving face on which said fluid acts in said valve-closing direction in said closed state of said valve and both said pressure receiving faces have substantially equal pressure receiving areas, and wherein said valve element includes a received pressure adjusting portion for sliding in a sealed state in said flow path in a position upstream from said valve seat, a valve portion for opening and closing said valve seat from a downstream side, a stem connecting said valve portion and said received pressure adjusting portion, and a through hole provided in said received pressure adjusting portion to connect a flow path portion upstream from said received pressure adjusting portion and a flow path portion downstream from said received pressure adjusting portion and said forward pressure receiving face and said reverse pressure receiving face are formed such that fluid pressure operating force in said valve-closing direction and generated by said received pressure adjusting portion and fluid pressure operating force in said valve-opening direction and acting on said stem and said valve portion are equal to each other.