Patents by Inventor Kenneth P. Litteral

Kenneth P. Litteral 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).

  • Service alarm device for warning if an elevator safety device is not activated
    Patent number: 10526168
    Abstract: A service alarm device for use in an elevator system, the service alarm device including a control board configured to receive at least one safety signal, and an alarming device in communication with the control board, wherein the control board is configured to activate the alarming device based on the at least one safety signal.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: January 7, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Kenneth P. Litteral, Kurt J. Frei
  • SCISSOR LIFT ELEVATOR PLATFORM
    Publication number: 20190308848
    Abstract: An elevator car includes a car body having a car floor, one or more car sidewalls, and a car ceiling. A movable floor panel is located at the car floor. The movable floor panel is configured to be moved between a stowed position and a raised position, such that access to an elevator system hoistway is gained via the movable floor panel in the raised positon. A method of performing maintenance on an elevator system component includes moving an elevator car along a hoistway to a maintenance position, raising a movable floor panel of the elevator car from a stowed position to a raised position, accessing an elevator system component located in the hoistway outside of the elevator car through an opening in the elevator car via the movable floor panel located in the raised position, and performing maintenance on the component from inside of the elevator car.
    Type: Application
    Filed: April 10, 2018
    Publication date: October 10, 2019
    Inventor: Kenneth P. Litteral
  • Elevator hoistway access safety
    Patent number: 10252883
    Abstract: A method of controlling movement of an elevator car including determining whether the elevator car is present at a specified landing, determining a door lock state, and entering an access detection mode based in part on whether the elevator car is present at the specified landing and the door lock state.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 9, 2019
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: John F. Kleine, Jr., Kenneth P. Litteral
  • ELEVATOR HOISTWAY ACCESS SAFETY
    Publication number: 20170137258
    Abstract: A method of controlling movement of an elevator car including determining whether the elevator car is present at a specified landing, determining a door lock state, and entering an access detection mode based in part on whether the elevator car is present at the specified landing and the door lock state.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 18, 2017
    Inventors: John F. Kleine, JR., Kenneth P. Litteral
  • SERVICE ALARM DEVICE FOR AN ELEVATOR SYSTEM
    Publication number: 20170113900
    Abstract: A service alarm device for use in an elevator system, the service alarm device including a control board configured to receive at least one safety signal, and an alarming device in communication with the control board, wherein the control board is configured to activate the alarming device based on the at least one safety signal.
    Type: Application
    Filed: October 21, 2016
    Publication date: April 27, 2017
    Inventors: Kenneth P. Litteral, Kurt J. Frei