US 5,265,773 A · Paste feeding apparatus

Abstract

The paste feeding apparatus is equipped, within a cylindrical container having a paste feeding opening at its lower end, with a spiral pump composed of a vertical mantle tube having a paste inlet and a paste outlet, which are spacedly formed at lower and upper positions, respectively, and a screw shaft provided coaxially within the mantle tube; a drive motor connected to the screw shaft; and a piston moving up and down in an annular space in the container. A raking blade which is connected to the screw shaft and serves to rake a paste in the paste inlet of the mantle tube may be provided. The paste feeding apparatus is composed of a drive section and a pump-container section detachably installed thereto. According to the paste feeding apparatus, the kneading of a paste, the adjustment of its viscosity and the control of its feed rate can be stably achieved with high precision, and hence high reliability can be attained.

Claims10

Dependent claims

A paste feeding apparatus comprising a vertical cylindrical container;

a paste feeding opening defined in a lower end of the container;
a spiral pump composed of a mantle tube vertically provided within the container and having a paste inlet and a paste outlet, which are spacedly formed at lower and upper positions, respectively, and having an outside diameter smaller than an inside diameter of the container, and a screw shaft provided coaxially within the mantle tube and having a spiral blade or groove;
a drive motor provided in connection with the screw shaft of the spiral pump;
and a piston moving up and down in an annular space about the mantle tube in the container.

1 more element

Dependencies are inferred from the claim text.

Paste feeding apparatus

Life of this patent

Paste feeding apparatus

Life of this patent

Abstract

Claims10