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. 22, 1997
Filed:
Mar. 03, 1995
Applicant:
Inventors:
Harry J Lader, Lakewood, OH (US);
William R Rehman, Vermillion, OH (US);
James W Messerly, Stow, OH (US);
Assignee:
Nordson Corporation, Westlake, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239-3 ; 239704 ; 239706 ; 239692 ;
Abstract
In a triboelectric powder spray gun in which a charge is imparted to the powder triboelectrically by repeated impacts of the powder with contact surfaces, the charging effectiveness of the gun is enhanced by using an electrode to produce corona treatment of the contact surfaces. The corona treatments discharge the contact surfaces and eliminate the need for adjacent grounds with the powder flow path.