Patents by Inventor Toshiaki Nagamitsu

Toshiaki Nagamitsu 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).

  • Connecting device for front and rear frame of tricycle
    Patent number: 3931989
    Abstract: A tricycle having a front frame supported with one front wheel and a rear frame supported with two rear wheels, wherein the front frame is connected with the rear frame on the axis longitudinal of the tricycle in the relation that the front frame is capable of being inclined to one side or the other with respect to the rear frame. The tricycle is provided with a torsion bar arranged between the front frame and the rear frame on the axial line so that the torsion bar is subjected to only torsion not to complicated stresses of bending and tension.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: January 13, 1976
    Assignee: Daihatsu Motor Company Limited
    Inventor: Toshiaki Nagamitsu