Patents by Inventor Erminio Guaita

Erminio Guaita 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).

  • Elevator system having guide rollers
    Patent number: 5960911
    Abstract: An elevator system includes a guide roller having a contact surface and a flange that extends outward from the roller. A guide rail for the elevator system includes a cam that is disposed to engage the flange of the roller. During extended periods of non-use, the elevator car is positioned such that the flange engages the cam and the loading on the contact surface of the roller is minimized or eliminated.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: October 5, 1999
    Assignee: Otis Elevator Company
    Inventors: Erminio Guaita, Luigi Angelo Sala
  • Hydraulic elevator having a counterweight
    Patent number: 5901814
    Abstract: A hydraulic elevator includes a hydraulic ram and a counterweight that are directly roped. The hydraulic ram includes a single-acting cylinder, piston and yoke that are placed within the hoistway adjacent to the path of motion of an elevator car. The counterweight is positioned adjacent to the hydraulic ram and on the same side of the car as the hydraulic ram. The combination of the directly counterweighted hydraulic ram and the arrangement of the hydraulic ram, counterweight and car results in minimal power and space requirements.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: May 11, 1999
    Assignee: Otis Elevator Company
    Inventors: Leandre Adifon, Erminio Guaita, Elio Taverna, Stefano Cantu