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:
Nov. 16, 2004
Filed:
Mar. 01, 2002
Richard Blair, Cumbernauld, GB;
William Crawford, Muireston, GB;
Martin Forsyth, Kirkmuirhill, GB;
Graeme J. Collie, Dunfemline, GB;
Kevin N. Hannigan, St. Johns, CA;
FMC Technologies, Inc., Chicago, IL (US);
Abstract
An ROV, wireline or diver installed subsea xmas tree debris cap has an integral corrosion inhibitor/biocide provided in the form of a solid block which is wrapped in a water soluble membrane bag. The block is suspended inside the debris cap in a basket or perforated container. After installation of the debris cap, the membrane and solid block will dissolve and sanitize the stagnant water, thereby protecting all materials from corrosion for a number of years. The debris cap also includes an environmental seal in the form of a single O ring. Furthermore, the debris cap is simplified in that it does not include a conventional debris cap-to-xmas tree lockdown mechanism.