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. 29, 1994
Filed:
Aug. 07, 1992
Gary W Box, Golden Valley, MN (US);
Lawrence S Kelly, Bolingbrook, IL (US);
Graco Inc., Minneapolis, MN (US);
Abstract
This invention is useful in a plural component system which utilizes sequential metering of multiple fluids. In such a system for dispensing component fluids such as paint, the controller dispenses a given amount of a first fluid, and then part way through dispensing of the second fluid, calculates the amount of the second fluid required in view of the actual amount of the first fluid dispensed and then dispenses that amount. The desired tolerance maybe subtracted from the amount of second fluid dispensed so that the overrun which always takes place from the valves on the second fluid will place the mixture in the middle of the range for the dispensed fluid. During subsequent cycles, the ratio is checked in view of the actual amounts dispensed and an alarm set off if the actual ratio falls outside of tolerance.