Trigger pump dispenser with interchangeable piston

US10173234B2 · kind B2 · utility

Assignee

• OBRIST CLOSURES SWITZERLAND GMBH · DE

Inventors

• Christoph Hoffmann · Nelson, AU
• Juergen Pellenz · Zell (Mosel), DE
• Klaus Thanisch · Bullay, DE
• Peter Stoelben · Zell (Mosel), DE
• Klaus Natersky · Grenderich, DE

Key dates

• Filing date: Aug 4, 2015
• Grant date: Jan 8, 2019
• Expiry date: Aug 4, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05B11/1059
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A trigger pump dispenser comprises a body, an outlet nozzle, a pump chamber, a piston for defining a variable volume in the pump chamber, a trigger coupled with the piston by interconnection means, and biasing means for biasing the trigger to a retracted position. The trigger is movable to cause the piston to pump liquid into and out of the pump chamber for dispensing through the outlet nozzle. The piston is interchangeably associatable with the trigger and the pump chamber so that different length pistons are usable to determine different maximum fill volumes of the pump chamber.