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:
May. 11, 2004
Filed:
May. 28, 2002
Jean Gilbert Boulet, Paris, FR;
S.M.F. International, Cosne sur Loire, FR;
Abstract
A profiled element for rotary drilling equipment and applications to components of a string of drill pipes has an area of abutment on the wall of a drilling hole having a maximum diameter constituting the maximum diameter of the rotary drilling equipment and a turbulence area for producing an activation of the circulation of a drilling fluid in the annulus. The profiled element also has a deflection area adjacent to the abutment area and to the turbulence area, having at least one surface inclined with respect to the axis of the rotary drilling, whose meridian line moves away from the axis in the direction going from bottom to top, in the service position of the profiled element in the drilling hole.