초록 ▼

A dispenser for paste-like materials is described which has a cover that automatically seals the dispenser\s spout when no material is pumped therefrom thereby protecting the spout and its immediate surroundings from ambient air. The cover automatically unseals the spout while material is being disp

A dispenser for paste-like materials is described which has a cover that automatically seals the dispenser\s spout when no material is pumped therefrom thereby protecting the spout and its immediate surroundings from ambient air. The cover automatically unseals the spout while material is being dispensed. The dispenser includes (1) a housing, (2) a reservoir or replaceable cartridge for storing paste-like material, (3) a pump for causing the flow of a controlled quantity of material from the reservoir or cartridge, through a channel and its discharge from the spout and (4) an integrated, rotatable cover containing a sealing cap for the spout and a plunger for activating the pump. The sealing cap and plunger move in concert with each other so that material is pumped from the spout after the sealing cap moves away from the spout. The dispenser eliminates the need for the manual replacement of caps, seals, plugs, covers and the like and provides an efficient seal which eliminates unwanted caking in the spout caused by dried out material.

대표청구항 ▼

A dispenser for paste-like material comprising: a. a housing; b. a reservoir situated within the housing for storing paste-like material; c. a stationary channel immovably fixed within the housing, said stationary channel having a first opening and a second opening; d. a well comprising a recess fix

A dispenser for paste-like material comprising: a. a housing; b. a reservoir situated within the housing for storing paste-like material; c. a stationary channel immovably fixed within the housing, said stationary channel having a first opening and a second opening; d. a well comprising a recess fixed within the housing and outside of and laterally offset from the stationary channel; e. pumping means comprising a piston having i. a piston head slidably mounted in the housing between the stationary channel and the reservoir; ii. a piston stem attached to the piston head and slidably mounted within the stationary channel; iii. an orifice which extends longitudinally through the piston head and piston stem; and iv. drive rod means having a lower end attached to the piston head and an upper end slidably mounted in the well; f. a cover rotatably attached to an end of the housing; g. a cap attached to the cover for sealing and unsealing the second channel opening as the cover is rotated; and h. a plunger attached to the cover for supplying a pumping force which sequentially activates the pumping means after rotational movement of the cover causes the cap to unseal the second channel opening, said plunger being spaced apart from the upper end of the drive rod means when the second channel opening is being sealed and said plunger being in contact with the upper end of the drive rod means when the second channel opening is being unsealed.