Patents by Inventor Robert Isaman

Robert Isaman 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).

  • Rooftop safety apparatus for elevator servicing
    Patent number: 6481537
    Abstract: Apparatus for protecting a workman mounted upon the roof of a traction elevator car. A vertically disposed sleeve is secured to the roof top area of the car and an elongated column is slidably mounted in the sleeve. A harness is attached near the top of the column by a lanyard.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: November 19, 2002
    Assignee: Otis Elevator Company
    Inventors: Thomas F. Malone, Jr., Robert Isaman