Patents Assigned to Radian Communication Services (Canada) Limited
  • Fall arrest safety device
    Patent number: 6837337
    Abstract: A fall arrest safety device for workers on transmission towers and the like includes a “matched” safety rail and brake trolley. The rail has a profile which includes a non-symmetrical profile portion and the trolley has a passageway of complimentary profile so that the trolley cannot be installed on the rail up-side down. A full body harness worn by a user of the device is clipped to the trolley and the trolley incorporates a brake which is spring-biassed into frictional engagement with the rail. The brake can be disengaged from the rail only by the user deliberately overriding the biassing effect.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: January 4, 2005
    Assignee: Radian Communication Services (Canada) Limited
    Inventors: David Alan Thomas, Yohanna Wahba
  • Fall arrest safety device
    Publication number: 20030217887
    Abstract: A fall arrest safety device for workers on transmission towers and the like includes a “matched” safety rail and brake trolley. The rail has a profile which includes a non-symmetrical profile portion and the trolley has a passageway of complimentary profile so that the trolley cannot be installed on the rail up-side down. A full body harness worn by a user of the device is clipped to the trolley and the trolley incorporates a brake which is spring-biassed into frictional engagement with the rail. The brake can be disengaged from the rail only by the user deliberately overriding the biassing effect.
    Type: Application
    Filed: May 12, 2003
    Publication date: November 27, 2003
    Applicant: Radian Communication Services (Canada) Limited
    Inventors: David Alan Thomas, Yohanna Wahba