Patents by Inventor Krishna Tavvala

Krishna Tavvala 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).

  • Vehicle with multiple drive axle assembly with a raisable and lowerable rear drive axle, and method of operating such a vehicle
    Patent number: 9381806
    Abstract: A vehicle having a multiple drive axle assembly includes a forward axle assembly including a forward interaxle differential, a forward interaxle differential input shaft and a forward interaxle differential output shaft. An intermediate drive shaft is connected to the forward interaxle differential output shaft. A rear axle assembly includes a rear differential and a rear differential input shaft. A rear clutch arrangement is provided between the intermediate drive shaft and the rear differential input shaft and is movable between a first position in which the rear clutch arrangement rotationally locks the intermediate drive shaft and the rear differential input shaft and a second position in which the intermediate drive shaft and the rear differential input shaft are rotationally disconnected. The rear axle assembly of the vehicle can be raised and lowered relative to a frame of the vehicle.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: July 5, 2016
    Assignee: Mack Trucks, Inc.
    Inventors: Krishna Tavvala, Brian Gordon
  • VEHICLE WITH MULTIPLE DRIVE AXLE ASSEMBLY WITH A RAISABLE AND LOWERABLE REAR DRIVE AXLE, AND METHOD OF OPERATING SUCH A VEHICLE
    Publication number: 20150266375
    Abstract: A vehicle having a multiple drive axle assembly includes a forward axle assembly including a forward interaxle differential, a forward interaxle differential input shaft and a forward interaxle differential output shaft. An intermediate drive shaft is connected to the forward interaxle differential output shaft. A rear axle assembly includes a rear differential and a rear differential input shaft. A rear clutch arrangement is provided between the intermediate drive shaft and the rear differential input shaft and is movable between a first position in which the rear clutch arrangement rotationally locks the intermediate drive shaft and the rear differential input shaft and a second position in which the intermediate drive shaft and the rear differential input shaft are rotationally disconnected. The rear axle assembly of the vehicle can be raised and lowered relative to a frame of the vehicle.
    Type: Application
    Filed: December 5, 2012
    Publication date: September 24, 2015
    Inventors: Krishna Tavvala, Brian Gordon