Plug for wrapped sleeves of paper or cardboard

US4977930A · kind A · utility

Assignee

• Werzalit AG + Co. · DE

Inventors

• Edmund Munk · Oberstenfeld, DE
• Helmuth Huber · Gronau, DE

Key dates

• Filing date: Mar 24, 1988
• Grant date: Dec 18, 1990
• Expiry date: Mar 24, 2008

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B65H75/185
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A plug for plugging wrapped sleeves of paper or cardboard includes a hollow rotation-symmetrical body one half of which is cylindrical and another part of which is frusto-conical. The outer edge or rim of the cylindrical part is provided with a thickening which continually increases towards the end face of the plug.