Patents by Inventor Madan M. Roy

Madan M. Roy 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).

  • Aircraft transmission test set
    Patent number: 4159642
    Abstract: The disclosure illustrates a closed loop aircraft transmission test set comprising a variable speed DC motor driving a speed changing gear box whose output shaft is coupled to the input of the transmission under test, the main output shaft of the transmission being coupled to a DC generator load, the output of the generator being used to supplement the input electric power used to operate the DC driving motor thus assuring power drain from the supply busses is only the amount needed to overcome system friction and efficiency losses.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: July 3, 1979
    Assignee: Avco Corporation
    Inventors: George S. Hudson, Madan M. Roy