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.

Date of Patent:
Aug. 21, 2018

Filed:

Jan. 18, 2018
Applicant:

Hunt Advanced Drilling Technologies, Llc, Dallas, TX (US);

Inventors:

Todd W. Benson, Dallas, TX (US);

Mohamed Ali Ahmed, Richardson, TX (US);

Justin Hussey, Dallas, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/06 (2006.01); E21B 47/16 (2006.01); E21B 28/00 (2006.01); E21B 7/24 (2006.01); E21B 4/10 (2006.01); E21B 49/00 (2006.01); E21B 47/12 (2012.01); E21B 47/09 (2012.01); E21B 47/00 (2012.01); E21B 34/00 (2006.01); E21B 41/00 (2006.01);
U.S. Cl.
CPC ...
E21B 47/16 (2013.01); E21B 4/10 (2013.01); E21B 7/24 (2013.01); E21B 28/00 (2013.01); E21B 34/00 (2013.01); E21B 34/06 (2013.01); E21B 47/00 (2013.01); E21B 47/09 (2013.01); E21B 47/12 (2013.01); E21B 49/003 (2013.01); E21B 34/066 (2013.01); E21B 41/00 (2013.01);
Abstract

A tapered magnetorheological (MR) valve includes a first fixed housing that remains in a fixed position along a central axis of the tapered MR valve. A second housing moves linearly along the central axis of the tapered MR valve. The first fixed housing and the second housing together define a first MR fluid chamber and a second MR fluid chamber for containing MR fluid interconnected by an MR fluid channel. The second housing moves linearly between a first position and a second position along the central axis of the tapered MR valve to control flow of the MR fluid through the MR fluid channel.


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