Patents by Inventor Frederick K. Armbruster

Frederick K. Armbruster 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).

  • Motorcycle clutch system
    Patent number: 6227342
    Abstract: A hydraulic clutch assembly for a motorcycle having a handlebar, an engine, and a clutch, includes a master hydraulic cylinder assembly, a slave hydraulic cylinder assembly, and a hydraulic line adapted to communicate hydraulic fluid pressure between the two hydraulic cylinder assemblies. The master hydraulic cylinder assembly is adapted to be mounted on the handlebar of the motorcycle and it includes a clutch lever portion that is adapted to actuate the master cylinder assembly. The slave hydraulic cylinder assembly is adapted to be mounted on the engine of the motorcycle and to pull on the clutch when actuated in the place of a conventional clutch cable. The hydraulic line is adapted to communicate hydraulic fluid pressure between the master cylinder assembly and the slave hydraulic cylinder assembly so that pulling the clutch lever portion of the master hydraulic cylinder assembly actuates the slave hydraulic cylinder assembly and causes it to pull on and disengage the clutch.
    Type: Grant
    Filed: October 15, 1999
    Date of Patent: May 8, 2001
    Inventors: Frederick K. Armbruster, William A. Neal, III