Patents by Inventor David John Burtt

David John Burtt 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).

  • Toroidal continuously variable transmission
    Patent number: 9341264
    Abstract: A variator has an input shaft (18), an input disc (10) mounted coaxially with the input shaft and rotatable by the input shaft, an output disc (12) facing the input shaft (18) and being mounted coaxially with the input disc, a toroidal cavity defined between the input and output discs and a plurality of rollers (14, 16) located in the toroidal cavity, in rolling contact with the input and output discs (10, 12), each of the rollers being mounted on a roller carriage (17). The variator has means (34) for applying an end load to the variator to urge the rollers (14, 16) into contact with the input and output discs (10, 12) and resiliently deformable means for applying a reaction force to each of the roller carriages.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: May 17, 2016
    Assignee: Torotrak (Development) Limited
    Inventor: David John Burtt
  • TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20130017925
    Abstract: A variator has an input shaft (18), an input disc (10) mounted coaxially with the input shaft and rotatable by the input shaft, an output disc (12) facing the input shaft (18) and being mounted coaxially with the input disc, a toroidal cavity defined between the input and output discs and a plurality of rollers (14, 16) located in the toroidal cavity, in rolling contact with the input and output discs (10, 12), each of the rollers being mounted on a roller carriage (17). The variator has means (34) for applying an end load to the variator to urge the rollers (14, 16) into contact with the input and output discs (10, 12) and resiliently deformable means for applying a reaction force to each of the roller carriages.
    Type: Application
    Filed: November 23, 2010
    Publication date: January 17, 2013
    Inventor: David John Burtt