Patents by Inventor Dallas L. Pitts

Dallas L. Pitts 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).

  • Speed differential planetary gear train
    Patent number: 4014224
    Abstract: A planetary gear train having four gears that are arranged as two external-internal pairs, in which the two external gears are connected to form a cluster which rotates around a rotatable eccentric, and within the respective internal gears. Certain relations between parameters of the four gears provide high efficiency.
    Type: Grant
    Filed: May 12, 1975
    Date of Patent: March 29, 1977
    Assignee: Pitts Drive, Inc.
    Inventor: Dallas L. Pitts