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. 09, 2021
Filed:
Apr. 12, 2019
Applicant:
Nabors Lux 2 Sarl, Luxembourg, LU;
Inventors:
Assignee:
NABORS LUX 2 SARL, Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/00 (2006.01); F16H 49/00 (2006.01);
U.S. Cl.
CPC ...
E21B 4/006 (2013.01); F16H 49/001 (2013.01); F16H 2049/003 (2013.01);
Abstract
A harmonic gear drive includes an input shaft and an output shaft. The input shaft is mechanically coupled to a wave generator which has a varying diameter. The wave generator is positioned within a flex spline which includes external teeth. The external teeth of the flex spline engage with internal teeth of a fixed spline and an output spline when the major diameter of the wave generator is aligned therewith. The output spline has a different number of teeth from the input spline such that, as the wave generator is rotated and the flex spline rotates, the output spline is rotated relative to the fixed spline.