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:
Jul. 27, 1999
Filed:
Sep. 02, 1997
Shem-Mong Chou, Westmont, IL (US);
Roehl Llanes, Naperville, IL (US);
Goss Graphic Systems, Inc., Westmont, IL (US);
Abstract
A mixing and dispersing apparatus for emulsion ink in a printing press is disclosed. The apparatus includes a vessel having walls defining an upper chamber and a lower chamber. A motor drives a shaft carrying a propeller having pitched blades, disposed in the upper chamber. The shaft also carries a rotor disposed below the propeller. The rotor includes downwardly extending teeth that are disposed adjacent to inner and outer stator walls. The inner and outer stator walls are perforated by slots therein and are fixed with respect to the vessel. The propeller mixes ink and fountain solution and propels the mixture downward toward the rotor, which shears and disperses the ink and fountain solution into the lower chamber, forming a suitably stable emulsion ink. The emulsion ink is then pumped to an ink distribution rail for use of some of the emulsion ink for printing, with the remainder of the emulsion ink being recirculated to the mixing and dispersing apparatus.