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:
Feb. 23, 2016
Filed:
Sep. 05, 2012
Eirik Grande, Stavanger, NO;
Arild F. Stein, Sandnes, NO;
Eirik Grande, Stavanger, NO;
Arild F. Stein, Sandnes, NO;
Interwell AS, , NO;
Abstract
The invention relates to a flow activated circulating valve (). The valve comprises an outer housing () comprising radial ports () provided axially between an upper portion () of the valve () and a lower portion () of the valve (). An inner sleeve () provided inside the outer housing (), where the inner sleeve () is providing an axial bore () through the upper portion () of the valve () to the radial ports (). A cylinder compartment () is provided between the inner sleeve () and the outer housing (). A piston () is arranged for axial and rotational movement in the cylinder compartment (), where the piston () comprises piston ports () arranged to provide fluid communication between the axial bore () and the radial ports () when the piston () is in an open position (P), and where the piston () is arranged to prevent fluid communication between the axial bore () and the radial ports () when the piston () is in closed positions (P, P, P). An actuating device () is applying an axial pressure on the piston (). A sleeve opening () is providing fluid communication between the axial bore () and the cylinder compartment (). A fluid orifice () provided radially inside the inner sleeve (). A position controlling device () for controlling the axial and rotational position of the piston () in relation to the outer housing ().