The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 01, 1989
Filed:
Mar. 27, 1987
Applicant:
Inventors:
Trond V Johansen, Trondheim, NO;
Ola Ruch, Flats.ang.en, NO;
Ludvig Naess, Tiller, NO;
Robert Weber, Uttenreuth, DE;
Bernd Veenhoff, Langensendelbach, DE;
Horst Porner, Rottenbach, DE;
Erwin Laurer, Mohrendorf, DE;
Erich Strickroth, Buckenhof, DE;
Hans-Peter Schabert, Erlangen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 93 ;
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.