Hiromasa Tanaka 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).
Abstract: A rear wheel suspension system, comprising a pair of hub carriers each for rotatably supporting a wheel, a plurality of lateral links for coupling the hub carriers to a vehicle body, and a pair of shock absorbers each consisting of a spring and a linear hydraulic damper for controlling impacts which are applied to one of the wheels. The shock absorbers are arranged laterally of the vehicle body, and are each coupled between the vehicle body and one of the hub carriers by way of a bell crank mechanism which may have a progressive property. The ends of the shock absorbers on the side of the vehicle body which oppose each other may be pivotally coupled to each other by way of a coupling structure which relatively elastically attaches the opposing ends to the vehicle body but relatively rigidly supports mutually abutting axial forces from the shock absorbers.
Abstract: A propeller shaft in a motor vehicle includes a plurality of shaft members and a plurality of joints operatively coupled between the shaft members, between the engine of the motor vehicle and one of the shaft members, and between a differential coupled to drive wheels and one of the shaft members. At least one of the joints comprises a slidable tripod joint. The tripod joint gives the propeller shaft a desired torque transmission capability and axial sliding displacements, and enables the propeller shaft to have a practically sufficient service life for high-speed rotation.