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:
Mar. 15, 2016
Filed:
Mar. 12, 2013
Grant Mcguffey, Springfield, TN (US);
Grant McGuffey, Springfield, TN (US);
ILLINOIS TOOL WORKS INC., Glenview, IL (US);
Abstract
A dual, variable volume hot melt adhesive dispensing nozzle or die assembly is provided with a pair of choke slots within a first fluid control plate. The provision of the choke slots within the first fluid control plate effectively restricts and retards the flow of the fluid through such choke slots whereby volumes of the fluids are effectively built up and stored upstream of the choke slots so as to effectively delay the reaction of pressure spikes upon the fluid flows under both positive and negative conditions. This buildup in pressure and volume is then dispensed over time so as to cause the fluid flow to smoothly transition between positive and negative spiked fluid flow conditions and normal fluid flow conditions. Accordingly, the pressure spikes do not adversely affect the resulting fluid flows whereby, for example, under conventional negative pressure spike conditions, gaps in the dispensed hot melt adhesive would otherwise occur.