Patents by Inventor Daniel M. Bohn

Daniel M. Bohn 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).

  • Management of mutiple coil brake for elevator system
    Patent number: 10919730
    Abstract: An elevator system includes an elevator car; a machine to impart motion to the elevator car; a brake to stop rotation of the machine, the brake comprising a first coil and a second coil, wherein removing power from the first coil and the second coil applies the brake to the machine; and a controller in communication with the brake, the controller configured to connect the first coil and the second coil in one of a first electrical configuration and a second electrical configuration.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 16, 2021
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Amir Lotfi, Daniel M. Bohn
  • MANAGEMENT OF MUTIPLE COIL BRAKE FOR ELEVATOR SYSTEM
    Publication number: 20170267486
    Abstract: An elevator system includes an elevator car; a machine to impart motion to the elevator car; a brake to stop rotation of the machine, the brake comprising a first coil and a second coil, wherein removing power from the first coil and the second coil applies the brake to the machine; and a controller in communication with the brake, the controller configured to connect the first coil and the second coil in one of a first electrical configuration and a second electrical configuration.
    Type: Application
    Filed: March 18, 2016
    Publication date: September 21, 2017
    Inventors: Amir Lotfi, Daniel M. Bohn