Patents by Inventor Stig Albertsson

Stig Albertsson 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).

  • Speed control mechanism
    Patent number: 7753182
    Abstract: A speed restrictor for a gravity driven vehicle is provided. The speed restrictor is configured to limit the speed of the gravity driven vehicle by restricting rotation of a wheel axle while the gravity driven vehicle descends down a mountain track.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: July 13, 2010
    Inventor: Stig Albertsson
  • Collision Avoidance Methods and Systems For Gravity Propelled Vehicles
    Publication number: 20090299596
    Abstract: A method for avoiding a likelihood of collision on a track disposed on a pitched terrain between an approaching gravity driven vehicle and a forward gravity driven vehicle includes activating a warning in the approaching vehicle for alerting the rider to manually slow down the approaching vehicle to increase a distance between the approaching vehicle and the forward vehicle, and automatically controlling application of a brake in the approaching vehicle to slow down the approaching vehicle to increase the distance between the approaching vehicle and the forward vehicle. For example, the approaching vehicle receives a first signal regarding a warning zone for activating the warning, and a second signal regarding a danger zone for automatically activating the brake. The method and systems may be employed on gravity driven vehicles for use on mountain or alpine coasters.
    Type: Application
    Filed: May 27, 2009
    Publication date: December 3, 2009
    Inventors: Stig Albertsson, William L. Smith
  • Speed control mechanism
    Publication number: 20060103095
    Abstract: A speed restrictor for a gravity driven vehicle is provided. The speed restrictor is configured to limit the speed of the gravity driven vehicle by restricting rotation of a wheel axle while the gravity driven vehicle descends down a mountain track.
    Type: Application
    Filed: November 4, 2005
    Publication date: May 18, 2006
    Inventor: Stig Albertsson
  • Sled brake shoe
    Patent number: D569307
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: May 20, 2008
    Inventor: Stig Albertsson