Dispenser for positively discharging a medium through a plurality of motions

US5469989A · kind A · utility

Assignee

• Ing. Erich Pfeiffer GmbH & Co KG · DE

Inventors

• Lothar Graf · Rielasingen-Worblingen, DE
• Karl-Heinz Fuchs · Radolfzell, DE

Key dates

• Filing date: Oct 7, 1994
• Grant date: Nov 28, 1995
• Expiry date: Oct 7, 2014

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2202/064
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A dispenser is disclosed which is made up of two telescoping sections. One section holds at least one volume of a substance to be discharged. Telescoping motion of the sections compresses the substance to be discharged to force it through a passage in the section not holding the substance volume to be discharged therefrom. Motion between the section is limited to ensure precise metering of a charge to be dispersed.