Powder jet device for applying dental material

US8672678B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Jens Gramann · Bogen, DE
• Ruediger Hampe · Landsberg, DE
• Thomas Klettke · Dießen, DE
• Ingo R. Haeberlein · Weilheim, DE
• Christoph Schulte · Paderborn, DE
• Andreas Maurer · Zürich, CH
• Martin Goetzinger · Unterschleißheim, DE
• Sebastian Guggenmos · Peißenberg, DE

Key dates

• Filing date: May 28, 2009
• Grant date: Mar 18, 2014
• Expiry date: Aug 20, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B24C7/0084
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A nozzle head (5) for a powder jet device (1), for use in applying dental material, comprises a first fluid flow path (8) for delivering a powder/fluid mixture to a first discharge nozzle (8A). A second fluid flow path (6) is provided for delivering a liquid to a second discharge nozzle (6A) located adjacent the first discharge nozzle (8A), so that the materials discharged by the first and second discharge nozzles combine at a desired location to form a dental composition. A nozzle-clearing member (10) is located inside the nozzle head and is movable to remove powder material from the first discharge nozzle when the flow of powder/fluid mixture to the nozzle ceases.