Patents by Inventor Randal M. Billian

Randal M. Billian 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).

  • Suspension air spring lift kit
    Patent number: 7934734
    Abstract: A suspension air spring lift kit has a trailing arm having an end that is pivotally connected to a hanger bracket. A vertically oriented air bag is connected between another end of the trailing arm and a frame member of a vehicle, for example, a dump truck or a trailer in a tractor-trailer combination. An air spring system having a lower bracket and an upper bracket, with an air spring bag positioned between these two brackets, is attached between the frame member and the trailing arm. When the air spring bag is inflated, the air spring system lifts the trailing arm. When the air spring bag is deflated, the air spring system allows the trailing arm to be lowered.
    Type: Grant
    Filed: May 7, 2008
    Date of Patent: May 3, 2011
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Randal M. Billian, Aaron M. Smith
  • Suspension air spring lift kit
    Publication number: 20080284123
    Abstract: A suspension air spring lift kit has a trailing arm having an end that is pivotally connected to a hanger bracket. A vertically oriented air bag is connected between another end of the trailing arm and a frame member of a vehicle, for example, a dump truck or a trailer in a tractor-trailer combination. An air spring system having a lower bracket and an upper bracket, with an air spring bag positioned between these two brackets, is attached between the frame member and the trailing arm. When the air spring bag is inflated, the air spring system lifts the trailing arm. When the air spring bag is deflated, the air spring system allows the trailing arm to be lowered.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 20, 2008
    Inventors: Randal M. Billian, Aaron M. Smith