The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 26, 1983
Filed:
Oct. 22, 1980
Donald R Hastings, Elyria, OH (US);
Nordson Corporation, Amherst, OH (US);
Abstract
An air atomizing nozzle assembly for spray coating systems such as an electrostatic spray gun is disclosed. The nozzle assembly includes an air cap having a central bore which surrounds a fluid tip nozzle. The bore has a plurality of uniformly dimensioned axially aligned gas flow passages evenly spaced about its circumference and a plurality of radially inwardly extending ribs therebetween. The ribs engage the outside surface of the fluid tip nozzle to positively align its center axis on the axis of the central bore. The air cap and nozzle tip thus cooperate to form a plurality of uniform gas flow passages around the nozzle thereby producing a finely atomized uniform spray pattern of coating material emitted from the fluid tip. In a preferred embodiment of the invention, the gas flow passages and ribs are formed in a metal element inserted in a center bore in the air cap. The metal element is so dimensioned that the ribs make a press fit with the fluid tip to positively align it. The air cap is retained in a one-piece resilient retaining ring by snapping the air cap into position over an annular lip of the ring. The air cap and retaining ring form a seal which prevents control air from escaping to the atmosphere.