Patent ID: 8511924
Filing Date: 2013-08-20
Classification: B05B,B05C,B65D

Abstract:
1. A dispenser for viscous products, comprising: a housing having a generally elongate axis with a distal end, a proximal end and an interior volume; a moveable wall dividing the interior volume of the housing into a distal product chamber and a proximal pressure chamber in pressure communicating relation with one another; an outlet from the product chamber adjacent to the distal end; an inlet to the pressure chamber having a one-way arrangement allowing air to enter the pressure chamber when the pressure of the chamber is lower than atmospheric pressure; and a bellows, in fluid communication with the pressure chamber, that on actuation can be reduced in volume and that can subsequently recover, the bellows assembly being arranged for actuation by lateral pressure exerted generally perpendicular to the housing axis, wherein the inlet does not allow air to escape during compression of the bellows.