Patents by Inventor Ernesto M. Nacar

Ernesto M. Nacar 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).

  • Patent number: 5082302
    Abstract: A dual drive bicycle having a steerable front wheel and a rear wheel that is driven. A foot-powered drive system includes a first rotatable shaft extending transversely to the bicycle. A rotatable drive sprocket is operatively connected to a second shaft rotatably mounted on the steering post in which the front wheel is mounted. A rotatable driven sprocket is mounted on the first shaft and is capable of rotating same for forward drive. A continuous drive chain extends about the drive sprocket and the driven sprocket. A third rotatable shaft is mounted on the steering spindle so as to pivot with the front wheel when the latter is steered. A universal joint connects the second and thrid shafts at a location above the steering shaft. A further continuous chain and cooperating sprockets together with a hand-crank are provided to rotate the third shaft.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: January 21, 1992
    Inventor: Ernesto M. Nacar