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:
Dec. 18, 2018
Filed:
Nov. 18, 2014
Applicant:
Spex Engineering (Uk) Limited, Aberdeen, GB;
Inventors:
James George Oag, Aberdeen, GB;
Rae Andrew Younger, Ellon, GB;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 33/06 (2006.01); E21B 33/02 (2006.01); E21B 29/08 (2006.01); E21B 29/02 (2006.01);
U.S. Cl.
CPC ...
E21B 33/06 (2013.01); E21B 29/02 (2013.01); E21B 29/08 (2013.01); E21B 33/061 (2013.01);
Abstract
An apparatus for at least partially closing a throughbore is described. The apparatus comprises an apparatus housing, the apparatus housing defining a throughbore and a plurality of closure elements, each closure element being adapted to move between a retracted position, in which the throughbore is fully open, and a deployed position, in which the throughbore is at least partially closed, at least a portion of the movement of each closure element between the retracted position and the deployed position being rotational.