| 摘要 |
An apparatus for dispensing a liquid substance, for example a viscous substance such as tooth paste or soap, comprises a storage chamber for the substance in communication with a substance outlet, an expulsion member for forcing the substance from the storage chamber towards the substance outlet and a drive mechanism for driving the expulsion member. The expulsion member comprises a plunger provided with a first thread, wherein the drive mechanism comprises a drive nut with corresponding second thread for engaging the first thread, wherein the drive nut is rotatable with respect to the plunger, for instance through a longitudinal movement of the storage chamber in parallel to the plunger.
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