Airless spray nozzle and method of making it
AssigneeNordson Corporation
InventorAlvin A. Rood
Life of this patent
Estimating the term…
Abstract
An airless spray coating nozzle is made by cutting interpenetrating grooves into opposite sides of a nozzle tip blank. The groove on the pressurized or entrance side of the tip has a bottom portion which is wedge-shaped in cross section. The groove on the unpressurized or exit side of the tip has a bottom portion which is trapezoidal in cross section. Both grooves are cut into the nozzle tip with a grinding wheel after the tip has been hardened.
Claims42
An airless spray nozzle comprising a tip having an orifice formed by a first groove on a first side of the tip, with side walls which make the groove substantially wedge-shaped at the bottom;
- and
- an interpenetrating second groove on a second side of the tip opposed to the first side, said second groove being substantially trapezoid shaped with a substantially flat bottom and with side walls angled away from the bottom of said second groove;
- wherein the spray tip produces a flat fan spray pattern of liquid when the tip is connected to a source of fluid under pressure.
The method of making an airless spray nozzle tip comprising the step of:
- cutting interpenetrating grooves in a shape having bottom portions which are wedge-shaped in cross section into opposed sides of a nozzle tip blank that has previously hardened to rockwell C50 or harder, resulting in an orifice;
- so that the orifice thereby formed produces a flat fan spray pattern when one side is connected to a source of fluid under pressure.
The method of making an airless spray nozzle tip comprising the step of:
- cutting interpenetrating grooves, with one groove having a bottom portion which is trapezoidal in cross section, into opposed sides of a nozzle tip blank that has previously hardened to rockwell C50 or harder, resulting in an orifice;
- so that the orifice thereby formed produces a flat fan spray pattern when one side is connected to a source of fluid under pressure.
Dependencies are inferred from the claim text.