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:
Sep. 28, 2021
Filed:
Jun. 06, 2017
National Oilwell Varco, L.p., Houston, TX (US);
National Oilwell Vareo, L.P., Houston, TX (US);
Abstract
A pump includes a driving shaft having a central axis, two retention members disposed on the driving shaft, a rotor disposed on the driving shaft between the two retention members, a bushing disposed on the driving shaft between the two retention members, a diffuser disposed about the driving shaft and adjacent the rotor such that the rotor is rotatably disposed within the diffuser, and an axial biasing member. The axial biasing member is disposed on the shaft and axially pre-loaded to compress the axial biasing member, the rotor, and the bushing between the two retention members and impart a tension in the driving shaft.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile