Discharge device

US8038036B2 · kind B2 · utility

Assignee

• Ing. Erich Pfeiffer GmbH · DE

Inventors

• Thomas Bruder · Grafing, DE
• Andi Herz · Aach, DE
• Gerald Krampen · Radolfzell, DE

Key dates

• Filing date: Apr 29, 2008
• Grant date: Oct 18, 2011
• Expiry date: May 4, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/0044
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a discharge device for discharging liquid medium, with a pump device with a variable volume pump chamber, a discharge opening for the liquid medium, a feed path between the pump device and the discharge opening, and an outlet valve which is designed to open the discharge opening as a function of the pressure in the feed path, and to a discharge head provided for this purpose. The discharge device or the discharge head has a gas-permeable and liquid-tight air outlet which connects the pump chamber or the feed path to an external environment.