Dispenser for flowable media

US4728008A · 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: Aug 22, 1986
• Grant date: Mar 1, 1988
• Expiry date: Aug 22, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B15/30
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A dispenser or delivery apparatus for flowable media, particularly very viscous or gel-like media, has a dosing chamber body (38) located within the stored medium and the body (38) moves backwards and forwards over part of the pump stroke of the pump piston (10) of a thrust piston pump (8). Body (38) defines the piston bath (53) for pump piston (10) surrounding pump chamber (59) and the valve body (48) of an intake valve (47) for pump chamber (59). Accompanied by reliable filling of pump chamber (59) and small piston paths, this leads to a very accurate dosing of the medium quantity discharged per piston stroke.