Patents by Inventor Graham Lloyd DULL

Graham Lloyd DULL 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).

  • Castor wheel assembly
    Patent number: 9421822
    Abstract: A trolley having two castor wheel assemblies mounted to a trolley frame. The castor wheel assemblies are mounted toward a rear of the trolley frame whereas another pair of conventional castors are mounted to the front of the trolley frame. The castor wheel assemblies are not identical insofar as swiveling of the assemblies is limited in a direction inwardly of the trolley only. It has been found that limited swiveling of one of the castor wheel assemblies only such as at an offset angle provides more efficient guided steering of the trolley.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: August 23, 2016
    Assignee: INAUTEC PTY LIMITED
    Inventors: Graham Lloyd Dull, Clinton Anthony Dull
  • CASTOR WHEEL ASSEMBLY
    Publication number: 20150298504
    Abstract: A trolley having two castor wheel assemblies mounted to a trolley frame. The castor wheel assemblies are mounted toward a rear of the trolley frame whereas another pair of conventional castors are mounted to the front of the trolley frame. The castor wheel assemblies are not identical insofar as swiveling of the assemblies is limited in a direction inwardly of the trolley only. It has been found that limited swiveling of one of the castor wheel assemblies only such as at an offset angle provides more efficient guided steering of the trolley.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 22, 2015
    Applicant: INAUTEC PTY LIMITED
    Inventors: Graham Lloyd DULL, Clinton Anthony DULL