Patents by Inventor David G. Lewicki

David G. Lewicki has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Offset compound gear inline two-speed drive
    Patent number: 8668613
    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.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: March 11, 2014
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Mark A Stevens, Robert F Handschuh, David G Lewicki
  • Offset compound gear inline two-speed drive
    Patent number: 8091445
    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.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: January 10, 2012
    Assignee: The United States of America as represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Mark A. Stevens, Robert F. Handschuh, David G. Lewicki