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, 2005
Filed:
Aug. 12, 2002
Gerhard Beurer, Ulm, DE;
Thomas Franke, Ulm, DE;
Gerhard Schmidt, Ulm, DE;
Johann Stempfle, Pfaffenhofen, DE;
Gerhard Beurer, Ulm, DE;
Thomas Franke, Ulm, DE;
Gerhard Schmidt, Ulm, DE;
Johann Stempfle, Pfaffenhofen, DE;
Tally Computer Drucker GmbH, Elchingen, DE;
Abstract
A droplet generator for microdroplets (), in particular a nozzle head for inkjet printers, having groups of piezo electrically actuated bending converters () disposed in a casing (), wherein the bending converters () are disposed at a distance from each other and are guided in recesses separated by wall thicknesses, wherein liquid longitudinal channels () run below the flexible fingers () and having a liquid chamber () with a nozzle (), can maintain a high liquid flow, in the case of sufficiently thick chamber walls, wherein the chamber walls do not allow a deformation to occur having in each case an edge bead () run around an opening () of the liquid chamber (), wherein the edge bead () serves to limit a stroke of a respective one of the flexible fingers () and wherein a shaft () having at least the width of the flexible finger () and the height level of the base plate () follows the opening ().