Patent · US Active

Offset compound gear inline two-speed drive

US8668613B1 · kind B1 · utility

4Cited by

11References

13Claims

0Family size

Assignee

The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

Mark A. Stevens · Broadview Heights, US
Robert Handschuh · Burgkirchen an der Alz, DE
David Lewicki · Avon, US

Key dates

Filing date	Jan 10, 2012
Grant date	Mar 11, 2014
Priority date	—
Expiry date	Jan 10, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19237
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A two-speed transmission having an input shaft and an output shaft, the transmission being capable of transitioning between fixed ratios, the high-range ratio being direct 1:1 and the low-range ratio being about 2:1. The transmission is a simple lightweight, yet robust, configuration utilizing only two gear meshes, being comprised of an input gear, a cluster gear, and an output gear. The transmission is controlled with a clutch and a sprag and with the input and output shafts turning in the same direction.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.