Patents by Inventor George O. Zach, Jr.

George O. Zach, Jr. 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).

  • Power shift transmission
    Patent number: 4015486
    Abstract: A power shift transmission having dual planetary gearsets with hydraulic brake and clutches for selective transmission of power through either or both of the planetary gearsets to provide three forward and one reverse speed through the transmission.
    Type: Grant
    Filed: December 19, 1974
    Date of Patent: April 5, 1977
    Assignee: Allis-Chalmers Corporation
    Inventor: George O. Zach, Jr.