| 摘要 |
A dispenser for dispensing predetermined amounts of toothpaste or other material from a collapsible tube operates by subjecting the tube to hydraulic pressure thereby to squeeze the tube. The dispenser comprises a housing (10) having a first chamber (11) to hold the tube, a removable cap (18) formed with an opening from which the nozzle of the tube projects, a second chamber (12) to hold a reservoir of liquid and a slidable cap (31) movable by a spring (35) to cause a piston (30) to draw liquid from the reservoir into a pump chamber (40) through a one-way valve (28) and movable manually to cause the piston to force liquid from the pump chamber through a one-way valve (27) into the first chamber which is already filled with liquid, thereby to squeeze the tube. |
