A dispenser has, an elongated container having a storage portion for storing material to be dispensed, a female screw member fitted in the interior of the elongated container and held against longitudinal movement therealong, a male screw member having one end engaged with material in the storage portion...http://www.google.com/patents/US5085352?utm_source=gb-gplus-sharePatent US5085352 - Dispenser for discharging material and having relatively rotatable male and female screws
