| 摘要 |
PURPOSE:To keep the pressure in a coating liquid storage chamber at relatively low pressure until a coating liquid is completely consumed by providing a pressurizing mechanism so that the air in a cap is compressed every time the cap is attached and detached to force pressurized air into the coating liquid storage chamber through an object to be coated. CONSTITUTION:A piston 21 having a predetermined axial length is formed on the outer periphery of a holder 11 of a pressurization mechanism. A cap 2 is made of synthetic resin having elasticity, on the end of which a cylinder 23 which airtightly and slidably engaged with the piston 21 is provided. Hence when the cap 2 is engaged with the holder 11, the end of the cylinder 23 is brought into engagement with the piston 21 to seal the interior of the cap 2. Under such conditions, if the cap 2 is further forced, the air in the cap 2 is compressed. A ball 12 is retracted by the pressure of the compressed air, so that a gap is formed between the ball and a ball holder 17 and hence the compressed air is passed through the gap and forced into the holder 11 and a coating liquid storage chamber 3 so that the interior of the chamber 3 is kept at a predetermined pressure. |
