| 摘要 |
<p>A liquid dispensing system providing a housing holding a liquid filled pouch (48) inside, the housing pivotably supporting an actuating arm (24) which is thrust against the pouch (48) by a push button (18) extending outside the housing, the actuating arm (24) having an actuator (84) to compress an upper section of a tubular peristaltic pump section (60) of the pouch for squeezing out an incremental amount of liquid. The tubular peristaltic pumping section (60) provides V-shaped notches (72,76) arranged on lateral sides of the top section and the bottom section for ease of closure by flattening and other advantages. A check valve (106) having lever arms (116,118) to resiliently stretch flat a discharge nozzle section (62) at the lower end of the peristaltic pumping tube prevents dripping during non-use. A check valve actuator (90) is provided on the actuating arm (24) to engage with the check valve lever arms (116,118) to open the discharge nozzle (62) during actuation and a short time thereafter to create a suck-back to remove any drips. <IMAGE></p> |
