Patents by Inventor Yohanna Wahba

Yohanna Wahba 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).

  • 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