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:
Apr. 16, 2013
Filed:
Mar. 19, 2009
Kristoffer Brække, Stavanger, NO;
Kristoffer Brække, Stavanger, NO;
I-TEC AS, Royneberg, NO;
Abstract
A well plug having a flexible expandable sealing () and a metallic anchor () which can be moved radially out or in by rotating a leadscrew () in opposite directions. The well plug has a ball valve in a central longitudinal passage, which is kept open whenever the leadscrew () rotates. This increases the accuracy when setting the plug, and reduces the risk for the plug moving uncontrolled in the well bore during setting or retrieval. The ball valve can be opened or closed by rotating a transmitting shaft () within an angle of free motion, before the leadscrew is pulled along in the rotation. A ball valve for high pressure applications is also shown.