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:
Mar. 29, 2016
Filed:
Aug. 10, 2015
Blackhawk Specialty Tools, Llc, Houston, TX (US);
J. Christopher Jordan, Houston, TX (US);
James G. Martens, Houston, TX (US);
Jeffrey J. Arcement, Houma, LA (US);
Juan Carlos E. Mondelli, Houston, TX (US);
John E. Hebert, Houma, LA (US);
Scottie J. Scott, Houma, LA (US);
Thomas A. Dupre′, Houma, LA (US);
Blackhawk Specialty Tools, LLC, Houston, TX (US);
Abstract
A centralizer assembly having a tubular body member with upper and lower channels extending around the external surface of said central tubular body member. A bow spring assembly having bow spring members is installed around the outer surface of the tubular body member and can rotate about the outer surface of the central tubular body member. Bow spring heel supports prevent the bow spring members from contacting the outer surface of the central tubular member when compressed. Non-abrasive materials prevent damage to wellhead or other polished bore receptacles. A robust bolster frame protects the centralizer assembly during shipping, storage or other periods of non-use.