Patents by Inventor Serralathan SR

Serralathan SR 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).

  • Prognostic failure detection of elevator roller guide wheel
    Patent number: 11498804
    Abstract: An elevator car guide wheel system includes a guide wheel located at an elevator car, configured to contact a guide rail of an elevator system. The guide wheel includes a wheel hub located at a guide wheel axis, a wheel rim, and a wheel outer portion located at the wheel rim and configured for contact with the guide rail. A magnetic element is located at the guide wheel, and a sensor is located at the guide wheel and is configured to detect rotational direction and rotational speed of the guide wheel about a guide wheel axis via detecting a magnetic field of the magnetic element.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: November 15, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Serralathan SR, Vinod Vejandla
  • Escalator with a sensor for detecting sheave misalignment
    Patent number: 10850948
    Abstract: An escalator system wherein when a handrail belt is moving from rotation of a plurality of elevator sheaves: a controller receives data from a plurality of sensors, identifies from the data a first sheave of the plurality of sheaves as comprising reference alignment value for the system, determines for the plurality of sheaves a respective plurality of alignment values, compares the plurality of alignment values with the reference alignment value, and provides a predetermined response when any of the plurality of alignment values diverges from the reference alignment value by more than a predetermined amount.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: December 1, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Srinivasa Rao Ladi, Serralathan Sr
  • ESCALATOR WITH A SENSOR FOR DETECTING SHEAVE MISALIGNMENT
    Publication number: 20200079623
    Abstract: Disclosed is an escalator system wherein when a handrail belt is moving from rotation of a plurality of elevator sheaves: a controller receives data from a plurality of sensors, identifies from the data a first sheave of the plurality of sheaves as comprising reference alignment value for the system, determines for the plurality of sheaves a respective plurality of alignment values, compares the plurality of alignment values with the reference alignment value, and provides a predetermined response when any of the plurality of alignment values diverges from the reference alignment value by more than a predetermined amount.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 12, 2020
    Inventors: Srinivasa Rao Ladi, Serralathan SR
  • PROGNOSTIC FAILURE DETECTION OF ELEVATOR ROLLER GUIDE WHEEL
    Publication number: 20190322484
    Abstract: An elevator car guide wheel system includes a guide wheel located at an elevator car, configured to contact a guide rail of an elevator system. The guide wheel includes a wheel hub located at a guide wheel axis, a wheel rim, and a wheel outer portion located at the wheel rim and configured for contact with the guide rail. A magnetic element is located at the guide wheel, and a sensor is located at the guide wheel and is configured to detect rotational direction and rotational speed of the guide wheel about a guide wheel axis via detecting a magnetic field of the magnetic element.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 24, 2019
    Inventors: Serralathan SR, Vinod Vejandla