Patents by Inventor Le Ester Brooks

Le Ester Brooks 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: 4447068
    Abstract: An improved bicycle drive assembly characterized by an elongated, rotary drive shaft, a front gear assembly coupling the forward end of the drive shaft to the bicycle's crank-and-pedal assembly, a disk gear provided with a plurality of radial grooves on its outer face, a torque-shift gear assembly slidingly engaged to the drive shaft and keyed for mutual rotation therewith, and an adjustable spring assembly for biasing the torque-shift gear assembly towards the center of the disk gear. As the torque on the drive shaft is increased the torque-shift gear assembly is forced laterally out across the face of the disk gear to cause a down-shift in gear ratios. As the torque on the drive shaft decreases the spring assembly forces the torque-shift gear back towards the center of the disk gear to up-shift the gearing ratio.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: May 8, 1984
    Inventor: Le Ester Brooks