Back to results
US 4,637,527 AGranted
Apparatus for dispensing pigments
OwnerGiordano Arrigoniinventor
Life of this patent
Estimating the term…
Abstract
A device for dispensing separate supplies of fluids has a circular array of valves which are moved selectively to position a selected one of the valves at the central axis of the array, the selected valve then being actuated to dispense a metered quantity of the fluid supplied to that valve, subsequent to which the selected valve is returned to its position in the circular array.
Claims4
Apparatus for dispensing metered quantities of a plurality of fluid materials, comprising:
- plural metering valves arranged in a circular array about a central axis;
- plural flexible fluid supply lines respectively connected to an associated one of said metering valves and respectively connected to a supply of one of said fluid materials;
- plural guide and support members each carrying one of said metering valves, and movable between an advanced position in which the associated metering valve is substantially aligned with said central axis, and, a retracted position in which the associated metering valve is withdrawn from said central axis and repositioned within said circular array;
- plural independent drive means, each said drive means being connected to an independent one of said guide and support members and for moving the associated guide and support member between said advanced and retracted positions;
- means sequentially activating selected ones of said independent drive means;
- and
- an actuator means for operating said metering valves when in said advanced position, said actuator means being positioned in axial alignment with said central axis, and including gear driven gripping means activated by a rack under the control of a fluid actuated piston and cylinder arrangement.
4 more elements
Dependencies are inferred from the claim text.