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:
Jun. 04, 2019

Filed:

Dec. 04, 2015
Applicant:

Interwell Technology As, Ranheim, NO;

Inventor:

Espen Hiorth, Trondheim, NO;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 23/00 (2006.01); E21B 33/12 (2006.01); E21B 23/02 (2006.01);
U.S. Cl.
CPC ...
E21B 33/12 (2013.01); E21B 23/00 (2013.01); E21B 23/02 (2013.01);
Abstract

A releasable ratchet device, including a mandrel device with a grooved area and a locking device including locking grooves configured to be engaged with the grooved area of the mandrel device. The releasable ratchet device may be configured to be in a locked state, in which axial movement between the mandrel device and the locking device is allowed in a first direction when the locking device is engaged with the mandrel device and movement between the mandrel device and the locking device is prevented in a second direction opposite of the first direction when the locking device is engaged with the mandrel device. The releasable ratchet device further includes a releasing device configured to bring the releasable ratchet device to a released state, in which axial movement between the mandrel device and the locking device is allowed in both the first direction and the second direction.


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