Patents by Inventor Harold B. Barr

Harold B. Barr 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).

  • Continuously variable transmission
    Patent number: 4697477
    Abstract: A continuously variable transmission with constant torque is designed using an epicyclic gear mechanism with a casing that rotates freely within an electromagnetic braking device. The braking device utilizes magnetic particles filling a gap between the inner diameter of the braking device and the outer casing of the epicyclic gear mechanism such that when the particles are magnetized, they form an adhesive-like resistance to rotation of the epicyclic gear annulus.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: October 6, 1987
    Inventor: Harold B. Barr