Patents by Inventor David Andrew Gale

David Andrew Gale 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: 9381785
    Abstract: There is disclosed herein a vehicle configuration comprising a chassis, at least one front wheel, two rear wheels, and a propulsion unit driving the rear wheels. The rear wheels are connected to the chassis by a wheel support assembly configured for allowing movement of each rear wheel relative to the chassis, a hydraulic cylinder connected to the chassis and the rear wheel supports, and a piston connected the rear wheel supports and the chassis. The piston dividing the hydraulic cylinder into fluidly connected first and second chambers such that movement of hydraulic fluid from the first or second chamber of a hydraulic cylinder to the respective first or second chamber of another hydraulic cylinder displaces the pistons of the hydraulic cylinders in opposing directions relative to the respective housings and causes the chassis to articulate with respect to the surface.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: July 5, 2016
    Inventor: David Andrew Gale
  • Patent number: 9381940
    Abstract: There is provided a vehicle comprising a chassis, two surface-engaging front wheels, at least one surface-engaging rear wheel and a propulsion unit for driving either the front wheels or the rear wheel or wheels. Each front wheel being connected to the chassis by means of a front wheel support assembly, wherein the front wheel support assembly comprises a hydraulic cylinder associated with each front wheel. Each hydraulic cylinder comprises a housing connected to one of the chassis and the front wheel support assembly, and a piston connected to the other of the front wheel support assembly and the chassis.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 5, 2016
    Inventor: David Andrew Gale
  • Publication number: 20140312580
    Abstract: There is provided a vehicle comprising a chassis, two surface-engaging front wheels, at least one surface-engaging rear wheel and a propulsion unit for driving either the front wheels or the rear wheel or wheels. Each front wheel being connected to the chassis by means of a front wheel support assembly, wherein the front wheel support assembly comprises a hydraulic cylinder associated with each front wheel. Each hydraulic cylinder comprises a housing connected to one of the chassis and the front wheel support assembly, and a piston connected to the other of the front wheel support assembly and the chassis.
    Type: Application
    Filed: June 29, 2012
    Publication date: October 23, 2014
    Inventor: David Andrew Gale
  • Publication number: 20130068550
    Abstract: There is disclosed herein a vehicle configuration comprising a chassis, at least one front wheel, two rear wheels, and a propulsion unit driving the rear wheels. The rear wheels are connected to the chassis by a wheel support assembly configured for allowing movement of each rear wheel relative to the chassis, a hydraulic cylinder connected to the chassis and the rear wheel supports, and a piston connected the rear wheel supports and the chassis. The piston dividing the hydraulic cylinder into fluidly connected first and second chambers such that movement of hydraulic fluid from the first or second chamber of a hydraulic cylinder to the respective first or second chamber of another hydraulic cylinder displaces the pistons of the hydraulic cylinders in opposing directions relative to the respective housings and causes the chassis to articulate with respect to the surface.
    Type: Application
    Filed: January 7, 2011
    Publication date: March 21, 2013
    Inventor: David Andrew Gale