Shut-off device which can be inserted into a pipeline

US4852614A · kind A · utility

Assignee

• Den Norske Stats Oljeselskap A.S. · NO

Inventors

• Trond V. Johansen · Trondheim, NO
• Ola Ruch · Vossavangen, NO
• Ludvig Naess · Skien, NO
• Robert A. Weber · Uttenreuth, DE
• Bernd Veenhoff · Langensendelbach, DE
• Horst Porner · Erlangen, DE
• Erwin Laurer
• Erich Strickroth · Buckenhof, DE
• Hans-Peter Schabert

Key dates

• Filing date: Mar 27, 1987
• Grant date: Aug 1, 1989
• Expiry date: Mar 27, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M3/005
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The shut-off device is a hollow cylinder upon which is disposed a brake for fixing the position of the device in the pipeline and a seal which seals the area between the hollow cylinder and the wall of the pipeline. A valve is positioned in the hollow cylinder which allows flow of the pipeline fluid through the hollow cylinder when open but can be closed to stop the flow of pipeline fluid through the cylinder. The device is movable through the pipeline.