Patents by Inventor Stephen Savulak

Stephen Savulak 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).

  • Patent number: 11840423
    Abstract: A hybrid energy storage system for an elevator car includes a converter disposed on the elevator car and receives power from a power source and provides a first DC voltage to a first DC bus and a second DC voltage to a second DC bus, a first energy storage device connected to the converter receives the first DC voltage on the first DC bus, and a second energy storage device connected to the converter receives the second DC voltage on the second DC bus. The system also includes a first load connected to the first DC bus and a second DC bus, and a second load connected to the second DC bus. Power is provided from the first energy storage device to the first load under a first selected condition and power is supplied from the second energy storage device to the first load under second selected condition.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: December 12, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Suman Dwari, Stephen Savulak, Enrico Manes, Ronnie E. Thebeau, Xin Wu
  • Patent number: 11670961
    Abstract: According to a wireless power transfer system for wirelessly powering a conveyance apparatus of a conveyance system including: a wireless electrical power transmitter located along a side of the conveyance system in a first location; a power management system configured to control operation of the wireless electrical power transmitter; a wireless electrical power receiver located along a surface of the conveyance apparatus opposite the side; an energy storage device configured to receive electrical power from the wireless electrical power receiver; an energy storage device management system configured to monitor data of the energy storage device and the conveyance apparatus, the energy storage device management system being in wireless communication with the power management system, wherein the energy storage device management system is configured to transmit the data to the power management system and the power management system adjusts operation of the wireless electrical power transmitter in response to th
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: June 6, 2023
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Enrico Manes, Suman Dwari, Stephen Savulak, Goran Djuknic
  • Patent number: 11611241
    Abstract: An extravehicular mobility unit (EMU) includes a resonant coil on a surface of the EMU to be coupled to a second resonant coil affixed to a structure via a resonant magnetic field. The EMU also includes a receiver in the EMU coupled to the resonant coil to provide a direct current (DC) voltage based on the resonant magnetic field. A battery in the EMU is charged based on the DC voltage.
    Type: Grant
    Filed: May 17, 2021
    Date of Patent: March 21, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Stephen Savulak, Sean K. Murray, Gregory John Quinn
  • Publication number: 20220368158
    Abstract: An extravehicular mobility unit (EMU) includes a resonant coil on a surface of the EMU to be coupled to a second resonant coil affixed to a structure via a resonant magnetic field. The EMU also includes a receiver in the EMU coupled to the resonant coil to provide a direct current (DC) voltage based on the resonant magnetic field. A battery in the EMU is charged based on the DC voltage.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 17, 2022
    Inventors: Stephen Savulak, Sean K. Murray, Gregory John Quinn
  • Patent number: 11336120
    Abstract: A wireless power transfer system for wirelessly powering a conveyance apparatus of a conveyance system including: a wireless electrical power transmitter located along a side of the conveyance system in a first location, the side being stationary; and a wireless electrical power receiver located along a surface of the conveyance apparatus opposite the side, the wireless electrical power receiver and the wireless electrical power transmitter being in a facing spaced relationship defining a gap therebetween when the wireless electrical power receiver is located at the first location.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: May 17, 2022
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Suman Dwari, Ajit Rajagopalan, Stephen Savulak, Goran Djuknic, Parikshith B. Channegowda, Enrico Manes
  • Publication number: 20200189882
    Abstract: An elevator system includes a hoistway, an elevator car movable along the hoistway, and a power management and transfer system. The power management and transfer system includes an electrical power source, a hoistway contactor secured in the hoistway and operably connected to the electrical power source, and a car contactor disposed at the elevator car, such that when the car contactor is brought into operable contact with the hoistway contactor, electrical power is transferrable between the power source and the elevator car.
    Type: Application
    Filed: December 12, 2019
    Publication date: June 18, 2020
    Inventors: Enrico Manes, Atsushi Yamada, Suman Dwari, Craig Drew Bogli, Stephen Savulak, Ronnie E. Thebeau, Michael Garfinkel
  • Publication number: 20200195046
    Abstract: According to a wireless power transfer system for wirelessly powering a conveyance apparatus of a conveyance system including: a wireless electrical power transmitter located along a side of the conveyance system in a first location; a power management system configured to control operation of the wireless electrical power transmitter; a wireless electrical power receiver located along a surface of the conveyance apparatus opposite the side; an energy storage device configured to receive electrical power from the wireless electrical power receiver; an energy storage device management system configured to monitor data of the energy storage device and the conveyance apparatus, the energy storage device management system being in wireless communication with the power management system, wherein the energy storage device management system is configured to transmit the data to the power management system and the power management system adjusts operation of the wireless electrical power transmitter in response to th
    Type: Application
    Filed: December 9, 2019
    Publication date: June 18, 2020
    Inventors: Enrico Manes, Suman Dwari, Stephen Savulak, Goran Djuknic
  • Publication number: 20200189883
    Abstract: A hybrid energy storage system for an elevator car includes a converter disposed on the elevator car and receives power from a power source and provides a first DC voltage to a first DC bus and a second DC voltage to a second DC bus, a first energy storage device connected to the converter receives the first DC voltage on the first DC bus, and a second energy storage device connected to the converter receives the second DC voltage on the second DC bus. The system also includes a first load connected to the first DC bus and a second DC bus, and a second load connected to the second DC bus. Power is provided from the first energy storage device to the first load under a first selected condition and power is supplied from the second energy storage device to the first load under second selected condition.
    Type: Application
    Filed: December 13, 2019
    Publication date: June 18, 2020
    Inventors: Suman Dwari, Stephen Savulak, Enrico Manes, Ronnie E. Thebeau, Xin Wu
  • Publication number: 20200189875
    Abstract: An aspect includes a system with an energy storage device configured to provide electrical power to a conveyance apparatus of a conveyance system, a power management system configured to determine a charging schedule to recharge the energy storage device based at least in part on a status of the conveyance system, and a dispatching system configured to modify a dispatch schedule of the conveyance system based at least in part on the charging schedule.
    Type: Application
    Filed: December 4, 2019
    Publication date: June 18, 2020
    Inventors: Enrico Manes, Suman Dwari, Stephen Savulak, Ronnie E. Thebeau
  • Publication number: 20200195053
    Abstract: A wireless power transfer system for wirelessly powering a conveyance apparatus of a conveyance system including: a wireless electrical power transmitter located along a side of the conveyance system in a first location, the side being stationary; and a wireless electrical power receiver located along a surface of the conveyance apparatus opposite the side, the wireless electrical power receiver and the wireless electrical power transmitter being in a facing spaced relationship defining a gap therebetween when the wireless electrical power receiver is located at the first location.
    Type: Application
    Filed: December 9, 2019
    Publication date: June 18, 2020
    Inventors: Suman Dwari, Ajit Rajagopalan, Stephen Savulak, Goran Djuknic, Parikshith B. Channegowda, Enrico Manes
  • Patent number: 9590497
    Abstract: A system for providing electrical power to a load includes a boost converter with an input and an output. The boost converter is configured to receive power at a first voltage at the input, and to supply power at a higher second voltage from the output. A capacitor, e.g., a super capacitor, is operatively connected between the output of the boost converter and a ground node. A first switch is operatively connected between the first input node and the output of the boost converter for switching between a first state connecting the capacitor to the output of the boost converter and a second state connecting the capacitor to supply input voltage to the input of the boost converter.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: March 7, 2017
    Assignee: Rosemount Aerospace Inc.
    Inventors: Stephen Savulak, William A. Veronesi
  • Publication number: 20160105098
    Abstract: A system for providing electrical power to a load includes a boost converter with an input and an output. The boost converter is configured to receive power at a first voltage at the input, and to supply power at a higher second voltage from the output. A capacitor, e.g., a super capacitor, is operatively connected between the output of the boost converter and a ground node. A first switch is operatively connected between the first input node and the output of the boost converter for switching between a first state connecting the capacitor to the output of the boost converter and a second state connecting the capacitor to supply input voltage to the input of the boost converter.
    Type: Application
    Filed: October 14, 2014
    Publication date: April 14, 2016
    Inventors: Stephen Savulak, William A. Veronesi