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:
Jun. 15, 2021
Filed:
Mar. 04, 2019
National Oilwell Vareo, L.p., Houston, TX (US);
Nicholas Ryan Marchand, Edmonton, CA;
Masoud Kalantari, Edmonton, CA;
NATIONAL OILWELL VARCO, L.P., Houston, TX (US);
Abstract
A driveshaft assembly includes a driveshaft including a longitudinal shaft axis, a first end, a second end, and a radially outer surface. The first end includes a plurality of recesses extending radially inward from the radially outer surface. The recesses each include a convex engagement surface. The driveshaft assembly also includes a first end housing including a longitudinal housing axis and an axially extending receptacle. The receptacle includes a plurality of planar receptacle surfaces. In addition, the driveshaft assembly includes a plurality of torque transfer keys configured to transfer torque between the driveshaft and first end housing. Each of the torque transfer keys includes a planar key surface and a concave key surface. The convex engagement surface of each recess engages the concave key surface of one of the torque transfer keys. The planar key surface of each torque transfer key engages one of the planar receptacle surfaces.