Patents by Inventor Szymkowiak, Zbigniew

Szymkowiak, Zbigniew 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).

  • Vehicle drive and suspension system
    Patent number: 4674589
    Abstract: An all-terrain tricycle is disclosed, in which the power-transmission components, including the change speed gears, are all mounted in a single housing. The housing is mounted for up and down suspension pivoting in the vehicle frame. The rear axle runs in bearings in the housing. The arrangement is very robust, yet economical. The suspension-pivot-bearings include spaced co-axial rings welded into the metal tubes of the frame.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: June 23, 1987
    Assignee: Ontario Drive and Gear Limited
    Inventor: Szymkowiak, Zbigniew