초록 ▼

A dispenser for paste-like products comprising a preferably cylindrical container for the product to be dispensed is provided with delivery device in the form of a delivery piston (6), the surface area of which is substantially equal to the interior cross-sectional area of the container (7). Connect

A dispenser for paste-like products comprising a preferably cylindrical container for the product to be dispensed is provided with delivery device in the form of a delivery piston (6), the surface area of which is substantially equal to the interior cross-sectional area of the container (7). Connected to this piston is a dispensing structure (2) including a valve (4). The delivery piston is disposed within the upper end portion of the container and is designed for manual operation.

대표청구항 ▼

A dispenser for paste-like products comprising a container for holding a supply of product to be dispensed, said container having a lower cylindrical wall portion that is closed by a closure piston which is slideable upwardly therein and is displaced upwardly by atmospheric pressure as product is di

A dispenser for paste-like products comprising a container for holding a supply of product to be dispensed, said container having a lower cylindrical wall portion that is closed by a closure piston which is slideable upwardly therein and is displaced upwardly by atmospheric pressure as product is dispensed from the container, and repetitively actuatable delivery means at an upper portion of the container whereby a limited amount of product can be dispensed at each actuation, said dispenser being characterized by: A. said delivery means comprising (1) a delivery piston (a) which has a peripheral portion that axially slidably and sealingly engages an upper cylindrical wall portion of the container all around the same and (b) which substantially closes said upper wall portion of the container, opposes said closure piston and cooperates with it in defining the interior of the container so that downward movement of the delivery piston decreases the volume of said interior, (2) an upwardly projecting dispensing portion on the delivery piston, (a) the exterior of which comprises means whereby the delivery piston can be manually displaced downward and (b) which has an outlet at its top that is communicable through its interior and through an aperture in the delivery piston with the interior of the container, and (3) a non-return valve in said dispensing portion for controlling communication between the interior of the container and said outlet and whereby product displaced from the container by downward movement of the delivery piston is permitted to flow upward to said outlet but displaced product is prevented from flowing back into the container upon upward movement of the delivery piston; and B. locking means on said closure piston cooperating with the container to prevent downward movement of the closure piston but permit upward movement thereof.