Dental handpiece

US4212640A · kind A · utility

Assignee

• KALTENBACH & VOIGT GMBH · DE

Inventors

• Hans Loge · Biberach an der Riß, DE
• Eugen Eibofner
• Bernhard Kuhn · Biberach, DE
• Heinrich Reich · Biberach an der Riß, DE

Key dates

• Filing date: Nov 22, 1977
• Grant date: Jul 15, 1980
• Expiry date: Nov 22, 1997

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C1/052
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A dental handpiece having a sleeve, an axial drive shaft in the sleeve for driving a dental instrument at one end of the handpiece, a first coolant supply line in the handpiece, a second coolant supply line extending axially towards the dental instrument, and a coolant duct in the wall of the sleeve which intercommunicates the first and second coolant lines. The coolant duct extends rectilinearly and generally radially between an inner end which faces the interior of the sleeve and which communicates with the first coolant line, and an outer end which communicates with and is releasably connected to the second line at a location in the wall of the sleeve and which permits manipulation externally of the handpiece for releasing and connecting the duct and the second line.