Filling device

US4685494A · kind A · utility

Assignee

• Steridose Systems AB · SE

Inventors

• Peter Lofgren · Jokkmokk, SE
• Nils Arthun · Partille, SE

Key dates

• Filing date: Jun 19, 1984
• Grant date: Aug 11, 1987
• Expiry date: Jun 19, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65B3/14
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A filling device for sterile filling of containers. A flexible temporary storage container is placed in a dosage chamber and exposed to external over-pressure and under-pressure, respectively. The filling goods is sucked into the temporary storage container and pressed out to the final storage container. A device for fine adjustment of the volume of the chamber has the shape of an adjustable membrane. The temporary storage container can be made of two semi-spheres, of which one is rigid and the other flexible. The flexible part forms a membrane having an area equal to the inner area of the rigid semi-sphere. In order to promote natural rolling of the membrane on the inner surface of the rigid semi-sphere, the membrane has reduced wall thickness in a direction towards the margin thereof.