Nozzle for precision liquid dispensing and method of making
AssigneeBrian L. Verrilli
InventorsJohn D. Newbold, Brian L. Verilli
Life of this patent
Estimating the term…
Abstract
A nozzle for delivering a measured quantity of viscous liquid including a flared opening defined by a horizontal perimeter and a flare wall extending inward from the perimeter, a cylindrically-shaped barrel wall extending from the flare wall downward to a break point defined by a circle parallel to the flare opening and spaced-apart therefrom, a cone-shaped wall extending downward from the circular break point and inward therefrom to a circular exit opening, and a small-diameter exit tube extending from the circular exit opening to a circular exit aperture.
Claims20
A nozzle for delivering a measured quantity of viscous liquid comprising:
- a) an opening defined by a perimeter and a cylindrically-shaped barrel wall extending from said perimeter downward to a break point defined by a circle spaced-apart from said opening;
- b) means for connecting said barrel wall of said nozzle to a reservoir from which a viscous liquid is transferrable to said nozzle;
- c) a cone-shaped wall extending downward from said circular break point and then inward therefrom to a circular exit opening;
- and,
- d) a straight, small-diameter exit tube, of uniform diameter, extending from said circular exit opening to a circular exit aperture for dispensing the liquid from said nozzle;
- e) wherein there is a controlled ratio of the internal diameter of said exit tube and the wall thickness of said exit tube.
A nozzle for delivering a measured quantity of viscous liquid comprising:
- a) a flaired opening defined by a horizontal perimeter and a flare wall extending inward from said perimeter;
- b) a cylindrically-shaped barrel wall extending from said flare wall downward to a break point defined by a circle parallel to said flare opening and spaced-apart therefrom;
- c) a cone-shaped wall extending downward from said circular break point and inward therefrom to a circular exit opening;
- and,
- d) a small-diameter exit tube extending from said circular exit opening to a circular exit aperture.
A nozzle for delivering a measured quantity of viscous liquid comprising:
- a) a small-diameter tube having at one first end formed by a circular exit aperture, from which the viscous liquid issues, said tube extending straight upward to a second end defining a circular entrance;
- b) a cone-shaped wall extending upward from said second end defining a circular entrance and outward to a planar circular surface break point;
- c) a cylindrically-shaped barrel wall extending upward from said planar circular surface break point and slightly outward to a circle lying in a plane parallel to the plane of said circular surface break point;
- and,
- d) a flared opening defined by a horizontal perimeter and a flare wall extending outward from said circle.
A method of making a nozzle for delivering a measured quantity of viscous liquid into minute spaces comprising the steps of:
- a) placing a small circular tablet of a malleable metal, containing a majority of copper, on a circular die having a cylindrical extended inner wall;
- b) advancing a conically-shaped mandrel against said tablet and forcing the metal to be drawn down into said die and along said cylindrical extended inner wall;
- c) repeating steps a) and b) using progressively smaller-diameter, conically-shaped mandrels and progressively smaller diameter-circular dies having cylindrical extended inner walls until a nozzle is formed comprising:
- d) a flared opening defined by a horizontal perimeter and a flare wall extending inward from said perimeter;
- e) a cylindrically-shaped barrel wall extending from said flare wall downward to a break point defined by a circle parallel to said flare opening and spaced-apart therefrom;
- f) a cone-shaped wall extending downward from said circular break point and inward therefrom to a circular exit opening;
- and,
- g) a small-diameter exit tube extending from said circular exit opening to a circular exit aperture.
Dependencies are inferred from the claim text.