Patents by Inventor Alan Bartels

Alan Bartels 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).

  • Pallet truck tiller arm with angular speed mode adjustment and acceleration control
    Publication number: 20060089778
    Abstract: A motorized pallet truck includes an angular indicator on the steering arm mechanism providing an internal controller with an angular position of the steering arm or tiller. The controller applies a brake when the tiller is in either of a substantially vertical or substantially horizontal position, limits the speed of the truck for a predetermined rotational movement from the vertical position, and allows full speed of the vehicle when the tiller arm is pulled into a predefined fast driving arc. The controller further limits the rate of acceleration of the truck when the truck is transitioned between a slow and a fast mode of operation to prevent rapid acceleration in the speed of the truck during the transition.
    Type: Application
    Filed: October 26, 2004
    Publication date: April 27, 2006
    Inventors: Ryan Lindsay, Alan Bartels
  • Pallet truck tiller arm with angle detector for speed select
    Publication number: 20050016779
    Abstract: A motorized pallet truck includes an angular indicator on the steering arm mechanism providing an internal controller with an angular position of the steering arm or tiller. The controller applies a brake when the tiller is in either of a substantially vertical or substantially horizontal position, limits the speed of the truck for a predetermined rotational movement from the vertical position, and allows full speed of the vehicle when the tiller arm is pulled into a predefined fast driving arc.
    Type: Application
    Filed: July 25, 2003
    Publication date: January 27, 2005
    Inventors: Ryan Lindsay, Verle Dau, Alan Bartels