Patents by Inventor Ubaldo Ranzi, deceased

Ubaldo Ranzi, deceased 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).

  • Differential torque multiplying device
    Patent number: 3939731
    Abstract: A differential torque transmitting device is disclosed which comprises two serially arranged fluid metal couplings and a reducing gear inserted in parallel between the output members of the first and the second coupling. Means are provided to disconnect the reducing gear as the speed of the driven shaft equals that of the driving shaft.
    Type: Grant
    Filed: January 8, 1974
    Date of Patent: February 24, 1976
    Assignee: S.p.A. Ranzi Legnano
    Inventor: Ubaldo Ranzi, deceased