Patents by Inventor Cecil Asoka Weeramantry

Cecil Asoka Weeramantry 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).

  • Hydro-mechanical continuously variable transmission for producing high torque output
    Patent number: 9447858
    Abstract: A hydro-mechanical continuously variable transmission for producing high torque output is provided. One transmission includes an engine drive shaft driven by an engine and a planetary gear unit driven by power from the engine and to provide power to drive a transmission output shaft. The transmission also includes a hydrostatic drive unit driven by power from the engine and to drive a primary hydrostatic drive shaft. The transmission includes an engine clutch to be driven by the engine and to drive an input sun gear of the planetary gear unit while engaged. The transmission includes a secondary hydrostatic drive shaft driven by the primary hydrostatic drive shaft and to drive a ring gear of the planetary gear unit. The transmission includes a hydrostatic output clutch driven by the secondary hydrostatic drive shaft and to provide power to drive an output sun gear of the planetary gear unit while engaged.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: September 20, 2016
    Assignee: CNH Industrial America LLC
    Inventors: Cecil Asoka Weeramantry, Haibo Guo
  • HYDRO-MECHANICAL CONTINUOUSLY VARIABLE TRANSMISSION FOR PRODUCING HIGH TORQUE OUTPUT
    Publication number: 20140248986
    Abstract: A hydro-mechanical continuously variable transmission for producing high torque output is provided. One transmission includes an engine drive shaft driven by an engine and a planetary gear unit driven by power from the engine and to provide power to drive a transmission output shaft. The transmission also includes a hydrostatic drive unit driven by power from the engine and to drive a primary hydrostatic drive shaft. The transmission includes an engine clutch to be driven by the engine and to drive an input sun gear of the planetary gear unit while engaged. The transmission includes a secondary hydrostatic drive shaft driven by the primary hydrostatic drive shaft and to drive a ring gear of the planetary gear unit. The transmission includes a hydrostatic output clutch driven by the secondary hydrostatic drive shaft and to provide power to drive an output sun gear of the planetary gear unit while engaged.
    Type: Application
    Filed: November 12, 2012
    Publication date: September 4, 2014
    Applicant: CNH INDUSTRIAL AMERICA LLC
    Inventors: Cecil Asoka Weeramantry, Haibo Guo