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:
May. 27, 2025
Filed:
Dec. 14, 2023
Hamilton Sundstrand Corporation, Charlotte, NC (US);
Pawel Aleksander Chmielewski, Brzezia Laka, PL;
Jonathan Darby, Newcastle, GB;
Steve Davies, Shrewsbury, GB;
Lukasz Turek, Wroclaw, PL;
Marcin Cis, Wroclaw, PL;
Katarzyna Agata Łuszczyk, Wroclaw, PL;
HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US);
Abstract
A strain wave drive includes an elliptical wave generator shaft rotatable about an axis (X), a flexible tubular flex spline mounted around the wave generator shaft and a ring gear assembly mounted around the flex spline. The ring gear assembly includes an output ring gear having a circular inner periphery and is sandwiched between two earth ring gears each having a circular inner periphery. The flex spline has a first number of radially outwardly extending teeth around its outer periphery; and wherein each earth ring gear has the first number of radially inwardly extending teeth to engage with the teeth of the flex spline; and wherein the output ring gear has a second number of radially inwardly extending teeth, wherein the second number is greater than the first number.