Patents by Inventor John J. Ferrisi

John J. Ferrisi 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).

  • Roller guide assembly with sound isolation
    Patent number: 6032764
    Abstract: A roller guide assembly for an elevator system includes a plurality of rollers and a damping subassembly. The damping subassembly includes a plurality of dampers and a sound isolation mechanism. The sound isolation mechanism interconnects the dampers and provides sound isolation between the rollers and the elevator car. In a particular embodiment, the sound isolation mechanism includes a friction bar that interconnects the rollers and dampers.
    Type: Grant
    Filed: January 29, 1998
    Date of Patent: March 7, 2000
    Assignee: Otis Elevator Company
    Inventors: John J. Ferrisi, Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill
  • Roller guide friction damper
    Patent number: 5950771
    Abstract: An elevator system includes an elevator car with a plurality of roller guide assemblies attached thereto. The roller guide assemblies guide the elevator car vertically within a hoistway along a plurality of guide rails. Each roller guide assembly includes a friction damping subassembly to minimize vibration and lateral movement of the elevator car. The friction damping subassembly includes a grounding bar and a friction damper attaching onto a shaft of each roller in the roller guide assembly. The friction damping subassembly dissipates energy and improves the ride quality of the elevator car.
    Type: Grant
    Filed: December 11, 1997
    Date of Patent: September 14, 1999
    Assignee: Otis Elevator Company
    Inventors: John J. Ferrisi, Akihiro Hasegawa, James A. Rivera, Bruce P. Swaybill