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:
Feb. 04, 2008
François Millet, Antony, FR;
Pierre-arnaud Foucher, Poissy, FR;
Paul Helderle, Paris, FR;
Geoservices Equipements, Roissy-en-France, FR;
Abstract
This mandrel () comprises a body () and a radially expandable annular sealing element () which comprises a centring arrangement () and a closure arrangement () which can be deployed radially between a contracted configuration and a dilated configuration. It further comprises an anchoring element () which is positioned at a longitudinal distance from the sealing element () and is radially expandable between a retracted state and a deployed state. The mandrel () comprises sequencing means () which are capable of radially deploying the closure arrangement () after the anchoring element () and the centring arrangement (). In an at least partly deployed configuration, the centring arrangement () defines at least one axial passage () which extends through the annular sealing element (). The closure arrangement () closes the or each axial passage () as it is deployed.