| 摘要 |
<p>The purpose of this invention is to provide an aerosol dispenser, which does not rely upon atmosphere deteriorating chemical propellants for discharging the product, wherein a long duration, high pressure spray or discharge of the product is obtained. An easy to operate dispensing device has a rotatable actuator (20) connected with an expansible chamber (P, 51, 52) to effect operation of the expansible chamber to draw material to be dispensed from a container (C) into the expansible chamber (P, 51, 52) and to then pressurize the material. An expansible bulb (B) is connected with the expansible chamber and with a dispensing nozzle (H.90), and has a volumetric capacity several times as great as the expansible chamber. Valves (94, 96, 97, 98) are associated with the bulb control flow into and out of the bulb. The relative sizes of the expansible chamber and bulb are such that a hydraulic force multiplication is obtained from the expansible chamber into the bulb. </p> |
