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:
Nov. 15, 1994
Filed:
Dec. 20, 1993
Applicant:
Inventors:
Yamin Ma, Roseville, MN (US);
Lawrence J Lunzer, St. Louis Park, MN (US);
Norman N Fender, Farmington Hills, MI (US);
Assignee:
Graco Inc., Golden Valley, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239690 ; 239112 ; 239135 ;
Abstract
A liquid pumping system for transporting conductive liquids to an electrostatic spraying device while maintaining electrical isolation between the spraying device and the liquid source; the system includes sequentially-arranged metering valves and pumps to sequentially transport predetermined and isolated quantities of liquid.