Patents by Inventor James F. Casada

James F. Casada 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).

  • Positive variable drive transmission unit/system
    Patent number: 5374221
    Abstract: A set of interlocking sheaves having fan-shaped protruding curved surfaces of different conical angles and capable of varying their degree of interlock is used in conjunction with a drive line to provide a variable drive transmission system having a positive gear-like gripping action between the drive line and the sheaves, the improvement allowing increased drive line traction and noise reduction.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: December 20, 1994
    Inventor: James F. Casada