Patents by Inventor Bob Crenshaw

Bob Crenshaw 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).

  • Publication number: 20060108755
    Abstract: The three-wheeled skates system employs a conventional boot as used in in-line skates to which is attached a frame from toe to heel supporting a single wheel at the toe and a spaced pair of wheels sharing a common axle at the heel, the wheels being of the same type used in in-line skates. A mechanical braking system uses a handgrip lever controlling a brake actuator lever by Bowden-type sheath and cables. The brake actuator lever rotates about an axle, which applies the pressure of attached brakes for speed control. The rear axle is confined in generally frustroconical elastomeric elements and held within receiving bores within the heel portion of the frame, allowing the boot to lean inward relative to the wheels during a turn. The cant of the boot is adjustable from a cruising angle to a speed angle by settings of the front wheel on the toe frame.
    Type: Application
    Filed: October 3, 2005
    Publication date: May 25, 2006
    Inventors: Robert Smyler, Bob Crenshaw
  • Publication number: 20040207163
    Abstract: A two-wheel high-speed glider inline roller skate having a boot with toe and heel pads to which a downward opening channel-shaped wheel support is attached centrally along the length of the boot. The channel structure has a front portion with sidewalls extending downward and forward of the boot toe to receive a front wheel between the sidewalls, the wheel mounted on an axle mounted to the channel structure by bearings. The channel structure has a rear portion that receives a rear wheel between its sides, the wheel being rotated on a rear axle and mounted to the channel structure by bearings. The rear wheel is located below the rear portion of the heel mounting plate. The rear portion has a hand brake system secured above the rear axle for acting on the rear wheel at its rear periphery.
    Type: Application
    Filed: February 27, 2004
    Publication date: October 21, 2004
    Inventors: Robert Smyler, Bob Crenshaw