Patents by Inventor John P. Kunz

John P. Kunz 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).

  • Automatic parking brake and steering spindle
    Patent number: 6029779
    Abstract: A combination automatic parking brake and steering spindle is provided for use in a self-propelled vehicle carrying an elevatable boom or work platform. The automatic parking brake includes a brake cylinder which also acts as a steering spindle for the vehicle. The parking brake is actuated by a spring carried in the brake cylinder and urges a parking brake pad into contact with a steerable wheel. The parking brake is automatically released when the hydraulic propulsion system for the vehicle is activated and hydraulic pressure enters the brake cylinder compressing the spring and releasing the parking brake.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: February 29, 2000
    Assignee: UpRight, Inc.
    Inventor: John P. Kunz