Method and device for metering and dispersing fluid materials
First Claim
1. A method of metering and dispensing fluids which comprises progressing at a substantially constant rate a column of the fluid through a tube, injecting at timed intervals successive portions of gas seriatim into successive portions of said column of fluid to form bubbles spaced along the length of said columm so that fluid flows from an outlet opening of the tube as separated portions of uniform magnitude determined by said rate and said intervals.
3 Assignments
0 Petitions
Accused Products
Abstract
Method and device for metering and dispensing viscous or partly fluid materials in which the fluid material is flowed downwardly as a column through a tube, is separated into portions by injecting gas into the column to form bubbles spaced along the length of the fluid column and discharging the separated portions from an outlet opening of the tube. The apparatus includes a tube together with a controlled fluid material supply, a gas supply, a gas inlet for generating bubbles to separate fluid passing through the tube into portions and an outlet from the tube for discharging separated portions of fluid. The fluid portions may be collected and maintained separate by deposition in a displaceable medium such as air, liquid or powder, or by separate containers for each portion. The portions deposited in powder may pick up powder in the form of a non-tacky coating.
-
Citations
16 Claims
- 1. A method of metering and dispensing fluids which comprises progressing at a substantially constant rate a column of the fluid through a tube, injecting at timed intervals successive portions of gas seriatim into successive portions of said column of fluid to form bubbles spaced along the length of said columm so that fluid flows from an outlet opening of the tube as separated portions of uniform magnitude determined by said rate and said intervals.
- 10. A device for metering and dispensing fluids comprising a tube through which a fluid is progressed, an outlet at the end of the tube through which the fluid may be dispensed, means for progressing a column of fluid through the tube to establish a substantially constant rate of flow to the outlet and means for injecting at timed intervals successive portions of gas into the tube to form bubbles spaced along the length of said column to separate the fluid dispensed from the outlet of the tube into metered portions determined by said rate and said intervals.
Specification