Patents by Inventor Nachiket Pawar

Nachiket Pawar 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).

  • Urea solution pumps having leakage bypass
    Patent number: 10087804
    Abstract: Urea solution pumps having leakage bypass flowpaths and methods of operating the same are disclosed. Certain embodiments are pump apparatuses including an inlet passage in flow communication with a source of urea solution and a pump chamber, an outlet passage in flow communication with the pump chamber and an exhaust after treatment system, a diaphragm facing the pump chamber and coupled with an actuator, a first housing member coupled with a second housing member form a seal around the pumping chamber, a leak collection chamber surrounding the seal, and a return passage in flow communication with the leak collection chamber and the inlet passage. Urea solution that leaks from the pump chamber past the seal is received by the leak collection chamber and flows through the return passage to the pump inlet passage.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: October 2, 2018
    Assignee: Cummins Emission Solutions, Inc.
    Inventors: George Muntean, Nachiket Pawar, Kundana Inala, Steve Holl, Stephanie Apewokin, Cynthia Gosselin, Andrew Myer, Jim F. Burke, John Heichelbech
  • Urea Solution Pumps Having Leakage Bypass
    Publication number: 20150030466
    Abstract: Urea solution pumps having leakage bypass flowpaths and methods of operating the same are disclosed. Certain embodiments are pump apparatuses including an inlet passage in flow communication with a source of urea solution and a pump chamber, an outlet passage in flow communication with the pump chamber and an exhaust after treatment system, a diaphragm facing the pump chamber and coupled with an actuator, a first housing member coupled with a second housing member form a seal around the pumping chamber, a leak collection chamber surrounding the seal, and a return passage in flow communication with the leak collection chamber and the inlet passage. Urea solution that leaks from the pump chamber past the seal is received by the leak collection chamber and flows through the return passage to the pump inlet passage.
    Type: Application
    Filed: August 22, 2012
    Publication date: January 29, 2015
    Inventors: George Muntean, Nachiket Pawar, Kundana Inala, Steve Holl, Stephanie Apewokin, Cynthia Gosselin, Andrew Myer, Jim F. Burke, John Heichelbech