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:
Jul. 02, 2019
Filed:
Dec. 14, 2015
Had Engineering S.r.l., Saronno, IT;
Giorgio Girola, Cislago, IT;
HAD ENGINEERING S.R.L., Saronno (VA), IT;
Abstract
A device () for ensuring continuous circulation in well drilling includes a tubular body (), having an axial channel () with a lateral opening () which is closed by a removable plug (). A tubular support () is placed in the axial conduit and supports a shut-off member () which is held in position by a retainer (). The device () has an adjustment ring nut () which exerts a pressing action between the retainer () and the tubular support () to force the tubular support () in an axial limit-stop position against respective positioning and centering elements (), to allow recovery of clearances during placement of the tubular support () and the valve () supported the tubular support inside the tubular body ().