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:
May. 24, 2005
Filed:
Mar. 02, 2001
David M. Pittman, Brooklyn Park, MN (US);
Adam R. Friedrich, St. Paul, MN (US);
David M. Pittman, Brooklyn Park, MN (US);
Adam R. Friedrich, St. Paul, MN (US);
Graco Minnesota Inc., Minneapolis, MN (US);
Abstract
An electronic apparatus is provided for dispensing plural component materials having first and second (and optionally third) components and a desired ratio between the components. The apparatus has first and second reciprocating pumps (), each of the pumps () being connected to a source of one of said components, first and second reciprocating drivers (), each driver () being connected to drive one of the pumps and forming a driver-pump set, a position sensor () attached to each driver-pump set, each position sensor () outputting increments of resolution corresponding to a fixed volume being pumped by the driver-pump set to which it is connected, and a controller attached to the drivers and the position sensors to alternately move one of the driver-pump sets one said increment and the other of the driver-pump sets the product of one increment and the ratio.