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:
Feb. 06, 2001
Filed:
Nov. 19, 1998
Peter Heinrichs, Wegberg, DE;
Fritz Tibussek, Monchengladbach, DE;
Wirth Maschinen-und Bohrgerate-Fabrik GmbH, Erkelenz, DE;
Abstract
To separate relatively long upright pipes (,) which have a relatively large diameter, the lower end thereof being fixed in the ground, in particular of support legs (,) of an off-shore oil bore or conveying platform (,), a cutting unit is lowered down into the pipe (,) to a separation point. The cutting unit (,) acts gradually from the inside across the periphery to the internal periphery of the pipe (,) and cuts through the pipe (,) by removing metal. A bore tool head (,) is mounted upstream of the cutting unit (,), viewed from the lowering position, and is used to bore out material in the pipe such as ocean bed or concrete.