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:
Nov. 05, 2019
Filed:
Nov. 03, 2016
Hydril Usa Distribution Llc, Houston, TX (US);
Ming Yu Huang, Houston, TX (US);
Yuhua Dong, Houston, TX (US);
Read Joseph Johnson, Houston, TX (US);
Miao Luo, Potsdam, NY (US);
John B. McLaughlin, Norwood, NY (US);
Sitaraman Krishnan, Potsdam, NY (US);
Zackary Putnam, Potsdam, NY (US);
Hydril USA Distribution LLC, Houston, TX (US);
Abstract
A packer unit to be used in an annular blowout preventer. The packer unit includes an elastomer body including a compound of a nitrile rubber base polymer having a polymer chain, and a quantity of fluorine atoms attached to the polymer chain. The compound includes between 50 and 60% of the nitrile elastomer, between 25 to 35% carbon black, and the rest includes other materials. The quantity of fluorine atoms comprises short-chain fluorocarbon chain molecules The quantity of fluorine atoms displaces at least an equal quantity of hydrogen atoms from the polymer chain when the elastomer body is fluorinated.