Patents by Inventor Harshavardhan M. Karankikar

Harshavardhan M. Karankikar 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).

  • Switchgear having evaporative cooling apparatus
    Patent number: 8695358
    Abstract: A cooling apparatus for cooling a switchgear is provided. The switchgear has one or more primary contacts supported by a bushing and constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes at least one evaporator associated with each primary contact, a condenser apparatus located at a higher elevation than the at least one evaporator, fluid conduit structure connecting the at least one evaporator with the condenser apparatus, and electrically insulating working fluid in at least one evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser apparatus and to passively return condensed working fluid back to the at least one evaporator.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 15, 2014
    Assignee: ABB Research Ltd.
    Inventors: Patrik Kaufmann, Tilo Buehler, Harshavardhan M. Karankikar, Rahul Pawar, Jerry Earl, Gabriel Schuler
  • Switchgear Having Evaporative Cooling Apparatus
    Publication number: 20120297798
    Abstract: A cooling apparatus for cooling a switchgear is provided. The switchgear has one or more primary contacts supported by a bushing and constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes at least one evaporator associated with each primary contact, a condenser apparatus located at a higher elevation than the at least one evaporator, fluid conduit structure connecting the at least one evaporator with the condenser apparatus, and electrically insulating working fluid in at least one evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser apparatus and to passively return condensed working fluid back to the at least one evaporator.
    Type: Application
    Filed: April 12, 2012
    Publication date: November 29, 2012
    Applicant: ABB TECHNOLOGY AG
    Inventors: Patrik Kaufmann, Tilo Buehler, Harshavardhan M. Karankikar, Rahul Pawar, Jerry Earl, Gabriel Schuler