Liquid dispensing device with removable dosing unit

Details Liquid dispensing device with removable dosing unit Liquid dispensing device with removable dosing unit

1986-08-05

1987-04-14

Rolla, Joseph J.

Dispensing

With discharge assistant

Fluid pressure

251122, 251323, 222511, 222501, B65D 8300

Patent

active

046571620

ABSTRACT:
Simple cleaning, exact dosing and a high degree of operating safety are assured with a dosing device for dispensing a liquid through a liquid dispensing nozzle from a container holding the liquid under pressure in the interior thereof, which comprises a liquid dosing piston displaceable along the axis thereof and housed in a bushing having a screw thread for attachment to the container. The piston has a valve body at an end thereof adjacent the interior of the container and a section of reduced cross section adjoining the valve body, the valve body having a cylindrical surface coaxial with the piston. An annular sealing gasket is arranged between the interior of the container and the liquid dispensing nozzle, the gasket being coaxial with the piston and the piston being displaceable between a sealing position wherein the valve body surface engages the gasket and a dispensing position wherein the valve body surface is out of engagement with the gasket, and a spring biases the piston for displacement into the sealing position.

REFERENCES:
patent: 2064696 (1962-11-01), Gruenewald
patent: 2530583 (1950-11-01), Nurkiewicz
patent: 2638108 (1953-05-01), Williams et al.
patent: 2642261 (1953-06-01), Gates
patent: 2696828 (1954-12-01), Husing

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