Patents by Inventor Debabrata Pal

Debabrata Pal 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: 10451353
    Abstract: An electronics cooling system for an aircraft includes a heat exchanger comprising a coolant circuit, an air circuit, and a fuel circuit such that each of the circuits is in thermal communication with at least one of the other circuits. The coolant circuit is in thermal communication with one or more aircraft electronics. The air circuit is in fluid communication with at least one air source. The fuel circuit is in fluid communication with a fuel tank between the fuel tank and an engine of the aircraft.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: October 22, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 10443388
    Abstract: A heat pipe system includes one or more arcuate heat pipe segments shaped conforming to an inner wall of an engine rotor. The heat pipe system also includes a heat pipe fluid within the one or more arcuate heat pipe segments.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: October 15, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Debabrata Pal, Huazhen Chai
  • Publication number: 20190311870
    Abstract: A contactor post for an electrical contactor may comprise a body comprising an electrically and thermally conductive material, and a heat sink shunt extending from the body and comprising the electrically and thermally conductive material, wherein the body and the heat sink shunt are comprised of a single piece of the electrically and thermally conductive material.
    Type: Application
    Filed: April 5, 2018
    Publication date: October 10, 2019
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Debabrata Pal, Mark Hamilton Severson
  • Publication number: 20190292993
    Abstract: An electric propulsion system for a gas turbine engine may comprise an electric motor disposed within a nacelle of the gas turbine engine, wherein the electric motor is configured to receive a bypass air from a fan bypass duct for cooling the electric motor and the electric motor is configured to drive a low speed shaft of the gas turbine engine.
    Type: Application
    Filed: March 21, 2018
    Publication date: September 26, 2019
    Applicant: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Publication number: 20190280564
    Abstract: A variable speed, constant frequency (VSCF) generator system is provided and includes a generator portion, a first cooling circuit and a second cooling circuit. The generator portion includes a generator, electronics configured to control operations of the generator and a housing to house the generator and the electronics. The first cooling circuit is provided such that first fluid exiting the generator passes through a first cooling element prior to returning to the generator. The second cooling circuit is provided such that second fluid exiting the electronics passes through a second cooling element prior to being pumped back toward the electronics.
    Type: Application
    Filed: March 9, 2018
    Publication date: September 12, 2019
    Inventors: Debabrata Pal, John Huss, Mark W. Metzler
  • Patent number: 10405460
    Abstract: A circuit breaker arrangement includes a housing, a contact seated in the housing, and a lead in electrical communication with the at least one contact and disposed outside the housing. The circuit breaker arrangement includes a heat sink in thermal communication with the lead to transfer heat between the contact and the lead.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: September 3, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Publication number: 20190246519
    Abstract: A power electronics cooling system includes a ram air fan with one or more blades and a ram air fan motor connected via an output shaft. The ram air fan draws in air and passes it across a heat exchanger to cool one or more cooling liquids. One or more pumps pressurize and pump the cooling liquids to various electronic components, including one or more motor controllers. The pumps may be mechanically or electrically coupled to the output shaft of the ram air fan, such that the motor of the ram air fan provides energy to the pumps.
    Type: Application
    Filed: April 17, 2019
    Publication date: August 8, 2019
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventor: DEBABRATA PAL
  • Publication number: 20190214799
    Abstract: A contactor assembly post is provided. The contactor assembly post includes a first portion electrically connected to an external bus bar at an exterior of an electrical contactor housing, a second portion electrically connected to an internal bus bar at the exterior of the electrical contactor housing, a third portion and fins. The internal bus bar is configured to extend into an interior of the electrical contactor housing to be electrically coupled to another internal bus bar. The third portion extends transversely between the first and second portions. The fins extend transversely from multiple points defined along a longitudinal axis of the third portion.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Inventors: Debabrata Pal, Mark Hamilton Severson
  • Publication number: 20190215968
    Abstract: A system for protecting electronics includes a printed wiring assembly (PWA) having a surface with at least one electronic component. The system also includes a water resistant film configured to be used as a conformal coating on the PWA and further configured to be placed on the surface of the PWA and to shrink about the at least one electronic component.
    Type: Application
    Filed: January 5, 2018
    Publication date: July 11, 2019
    Applicant: Hamilton Sundstrand Corporation
    Inventors: Robert C. Cooney, John Huss, Kandy Elaine Spahr, Deron J. Staas, Mark W. Metzler, Debabrata Pal
  • Patent number: 10349530
    Abstract: A system for protecting electronics includes a printed wiring assembly (PWA) having a surface with at least one electronic component. The system also includes a water resistant film configured to be used as a conformal coating on the PWA and further configured to be placed on the surface of the PWA and to shrink about the at least one electronic component.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: July 9, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Robert C. Cooney, John Huss, Kandy Elaine Spahr, Deron J. Staas, Mark W. Metzler, Debabrata Pal
  • Patent number: 10333364
    Abstract: An electrical machine includes a winding core with a plurality of end slots. A winding is seated in the end slots with end windings where the winding crosses from end slot to end slot. A slot insulator is seated in two of the end slots. The slot insulator includes a first slot liner seated in a first one of the two end slots with a winding slot defined therethrough in an axial direction. A second slot liner is seated in a second one of the two end slots with a winding slot defined therethrough in the axial direction, wherein the second slot liner is spaced apart in a lateral direction relative to the axial direction from the first slot liner by a gap. The slot insulator includes a span portion bridging across the gap to connect the first and second slot liners.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: June 25, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, Craig R. Legros
  • Publication number: 20190180908
    Abstract: An inductor housing for housing an inductor having a core and a winding includes an outer annular wall and a third wall extending inward from the outer annular wall such that the outer annular wall and the third wall at least partially define an annular cavity configured to receive the inductor. The inductor housing further includes an attachment feature configured to couple the inductor housing to a secondary housing. The inductor is configured to be enclosed within the annular cavity and the secondary housing, and coolant from a coolant supply is configured to flow past the annular cavity and contact the winding of the inductor.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 13, 2019
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Mark W. Metzler, Debabrata Pal, Mustansir Kheraluwala, Charles Patrick Shepard
  • Patent number: 10321604
    Abstract: A power electronics cooling system includes a ram air fan with one or more blades and a ram air fan motor connected via an output shaft. The ram air fan draws in air and passes it across a heat exchanger to cool one or more cooling liquids. One or more pumps pressurize and pump the cooling liquids to various electronic components, including one or more motor controllers. The pumps may be mechanically or electrically coupled to the output shaft of the ram air fan, such that the motor of the ram air fan provides energy to the pumps.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 11, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 10305261
    Abstract: A power distribution system includes an electrical contactor arrangement. The electrical contactor arrangement includes a first contactor post, a first contactor lead, and a second contactor lead. The first contactor post extends from a first bus bar. The first contactor lead extends from the first contactor post. The first contactor lead is at least partially received within a contactor housing. The second contactor lead is spaced apart from the first contactor lead and extends from the first contactor post. The second contactor lead is at least partially received within the contactor housing.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: May 28, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 10295229
    Abstract: A method and system to transfer heat using a cooling medium includes a first cold plate, including a first fluid flow path in thermal communication with a first thermal region of the first cold plate, and a second fluid flow path in fluid communication with the first fluid flow path and in thermal communication with a second thermal region of the first cold plate, and a thermoelectric heat exchanger in thermal communication with the first thermal region of the first cold plate.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: May 21, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 10292316
    Abstract: A module has a first layer with a plurality of transistors mounted thereon. Circuit traces are configured to communicate current between the transistors outwardly of the module. A second layer is in operable communication with the first layer. A third layer is in operable communication with the second layer. A baseplate is in grounded communication with the third layer. A plurality of ribs are positioned between the third layer and the baseplate. The module is configured to allow fluid to flow between the third layer and the baseplate and around the plurality of ribs. A motor drive and a method are also disclosed.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: May 14, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Debabrata Pal
  • Patent number: 10270231
    Abstract: A contactor assembly post is provided. The contactor assembly post includes a first portion electrically connected to an external bus bar at an exterior of an electrical contactor housing, a second portion electrically connected to an internal bus bar at the exterior of the electrical contactor housing, a third portion and fins. The internal bus bar is configured to extend into an interior of the electrical contactor housing to be electrically coupled to another internal bus bar. The third portion extends transversely between the first and second portions. The fins extend transversely from multiple points defined along a longitudinal axis of the third portion.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 23, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Debabrata Pal, Mark Hamilton Severson
  • Patent number: 10270230
    Abstract: A power distribution system includes an electrical contactor arrangement. The electrical contactor arrangement includes a first contactor post, a first contactor lead, and a second contactor lead. The first contactor post extends from a first bus bar. The first contactor lead extends from the first contactor post. The first contactor lead is at least partially received within a contactor housing. The second contactor lead is spaced apart from the first contactor lead and extends from the first contactor post. The second contactor lead is at least partially received within the contactor housing.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: April 23, 2019
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Publication number: 20190103777
    Abstract: A wedge for a wound rotor includes a wedge body. The wedge body has a first layer and one or more second layers interfused with one another to provide structural support and limit resistive heating of the wedge from current flow within the wedge body by windings spaced apart by the rotor wedge. Generator rotors and methods of making generator rotors are also described.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Debabrata Pal, Ashutosh Joshi
  • Patent number: 10242793
    Abstract: An apparatus includes a substrate layer formed from a pottant material that extends longitudinally in an unwound state. Cores are spaced longitudinally along the substrate layer and joined to the substrate at a first surface. The apparatus further includes pottant segments joined to the cores at a second surface opposite the first surface.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: March 26, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Debabrata Pal, John Horowy