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. 21, 2015
Filed:
Mar. 09, 2010
Martin P. Mccormick, Forest Lake, MN (US);
Richard T. Mallum, Maple Grove, MN (US);
Jeffrey G. Zinn, Roseville, MN (US);
Martin P. McCormick, Forest Lake, MN (US);
Richard T. Mallum, Maple Grove, MN (US);
Jeffrey G. Zinn, Roseville, MN (US);
Graco Minnesota Inc., Minneapolis, MN (US);
Abstract
The controller of the plural component proportioner () dispenses both components (or all three if a three component material) as necessary to maintain the correct mix ratio. The fluid displacement measuring technique described allows this proportioning to take place with the 'A' or main component pump always able to supply fluid to the spray gun without being stopped. The 'B' component, at a higher pressure, is added as necessary to control ratio. The control can determine whether the pumps were properly loaded with fluid, and the fluid was properly compressed for accurate measurement. This technique allows for the proportioned fluids to be provided to the spray gun(s) at high flow rates and consistent spray pressure without interruption.