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. 02, 1996
Filed:
Jul. 14, 1994
Frederick R Wichmann, Cincinnati, OH (US);
United Air Specialists, Cincinnati, OH (US);
Abstract
An electrostatic nozzle assembly for dispensing flowable material to a predetermined target. The nozzle assembly comprises an insulative cap, an insulative base and an electrically chargeable metallic, plate-like shim therebetween. The cap and base of the nozzle assembly have sharp continuous unbroken forward edges, the cap forward edge and the adjacent portion of the base defining a continuous dispensing slot. The nozzle assembly has at least one inlet for flowable material leading to at least one distribution chamber formed in the shim. The at least one distribution chamber comprises a plurality of distribution channels defining discrete pathways having a depth of about one half the thickness of the shim and configured to distribute the flowable material from the inlet to predetermined points along the dispensing nozzle assembly. The spacing between the forward edges of the base and cap and the spacing of the cap forward edge and the forward edge of the shim are critical. The nozzle assembly may be provided with a plurality of interchangeable shims differing in the thickness and the depth of the distribution chamber channels formed therein enabling the nozzle assembly to spray fluid material over a wide range of flow rates.