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. 12, 2019
Filed:
Feb. 17, 2015
National Oilwell Varco, L.p., Houston, TX (US);
Sergio Garcia, Houston, TX (US);
Chris Johnson, Houston, TX (US);
Lydia Mireles, Houston, TX (US);
Ali A. Al-Quraishi, Houston, TX (US);
Nathan Follett, Houston, TX (US);
National Oilwell Varco, L.P., Houston, TX (US);
Abstract
A wiper () for a blowout preventer having an adapter ring () and a piston () slideable relative to the adapter ring along an interface can include a base () adapted to couple the wiper to the adapter ring and a head () coupled to the base. The head can include a first portion adapted to bridge the interface and contact the piston and a second portion adapted to contact the adapter ring and support the first portion. The second portion of the head can be adapted to at least partially resist rotation of the wiper. A blowout preventer can include one or more wipers as shown and described.