Dosing system for an unvented container

US5058780A · kind A · utility

Assignee

• THE COCA-COLA COMPANY · US

Inventors

• George Plester · Brussels, BE
• Frederick D. Schorr · Decatur, US
• Georg Troska · Herten, DE

Key dates

• Filing date: Sep 22, 1989
• Grant date: Oct 22, 1991
• Expiry date: Sep 22, 2009

Classification

• Technology area (CPC G): Physics
• CPC primary: G01F11/021
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A dosing system has a vessel for holding a fluid and a dosing device for dispensing a measured quantity of fluid from the vessel. The dosing device hermetically seals the vessel and has a valve with a fluid passage, a piston surrounding the valve and a cylinder housing surrounding the piston. The valve is positioned in a first position wherein fluid is gravity fed from the vessel to a chamber formed between a drive face of the piston and the cylinder housing. The valve can be reciprocated from the first position to a second position whereat the valve closes the inlet from the vessel to the chamber. The piston closes the passage within the valve when the valve is in the first position and opens the passage when the valve is moved to the second position to permit discharge of fluid from the chamber. When the valve moves to a third position, the drive face of the piston moves toward a shoulder of the cylinder housing to thereby pump the fluid from the chamber. The valve can be moved between these three positions to repeatedly discharge fluid. When the valve returns from the third through the second to the first position, the drive face of the piston will move away from the shoulder of…