Patents by Inventor Rajiv Ranjan

Rajiv Ranjan 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).

  • Publication number: 20210246063
    Abstract: A method of fabricating a glass matrix composite includes providing a fiber preform in a cavity of a die tooling, the fiber preform circumscribing an interior region; providing a parison of glass matrix material in the interior region, the glass matrix material having a first viscosity; introducing pressurized inert gas into the parison to outwardly inflate the parison against the fiber preform; and while under pressure from the pressurized inert gas, decreasing the first viscosity of the glass matrix material to a second viscosity. The pressure and the second viscosity cause the glass matrix material to flow and infiltrate into the fiber preform to thereby form a consolidated workpiece. The consolidated workpiece is then cooled to form a glass matrix composite.
    Type: Application
    Filed: February 7, 2020
    Publication date: August 12, 2021
    Inventors: John J. Gangloff, JR., Paul Sheedy, Rajiv Ranjan
  • Publication number: 20210239613
    Abstract: A scanner of an optical detection system includes a housing, a light source associated with the housing operable to emit a light pulse into an area being scanned, a light sensitive device associated with the housing operable to detect a reflected light pulse from the area being scanned and an actuator for moving the light pulse through the area being scanned. The actuator comprises a solid state flexible polymer deformable in response to application of a voltage to the solid state flexible polymer.
    Type: Application
    Filed: May 6, 2019
    Publication date: August 5, 2021
    Inventors: Rajiv Ranjan, Suman Dwari, Peter R. Harris
  • Publication number: 20210231354
    Abstract: A separator for removing contamination from a fluid of a heat pump includes a housing having a hollow interior, a separation component mounted within the hollow interior, and at least one turbulence-generating element positioned within the hollow interior adjacent the separation component.
    Type: Application
    Filed: November 27, 2019
    Publication date: July 29, 2021
    Inventors: Rajiv Ranjan, Yinshan Feng, Parmesh Verma, Michael A. Stark
  • Publication number: 20210229024
    Abstract: A heat pump includes a vapor compression system and a cooling unit thermally coupled to the vapor compression system. A purge system is arranged in fluid communication with the vapor compression system. The purge system includes at least one separator operable to separate contaminants from a refrigerant purge gas provided to the purge system from the vapor compression system.
    Type: Application
    Filed: December 3, 2019
    Publication date: July 29, 2021
    Inventors: Rajiv Ranjan, Yinshan Feng, Parmesh Verma
  • Publication number: 20210206504
    Abstract: A system is disclosed for inerting a fuel tank. The system includes a fuel tank and an air separator including an air inlet, a membrane with a permeability differential between oxygen and nitrogen, an oxygen-depleted air outlet, and an oxygen-enriched air outlet. A catalytic reactor is arranged to receive oxygen-depleted air from the oxygen-depleted air outlet and fuel, to react the fuel with oxygen in the oxygen-depleted air, and to discharge an inert gas from a reactor outlet. An inert gas flow path is arranged to receive inert gas from the reactor outlet, or from the air separation module oxygen-depleted air outlet, or from the reactor outlet and from the air separation module oxygen-depleted air outlet, and to direct inert gas to the fuel tank.
    Type: Application
    Filed: January 3, 2020
    Publication date: July 8, 2021
    Inventors: Sean C. Emerson, Zissis A. Dardas, Rajiv Ranjan, Ying She, Haralambos Cordatos, Matthew Robert Pearson, Eric Surawski
  • Publication number: 20210206503
    Abstract: A system is disclosed for inerting a fuel tank. The system includes a fuel tank and an air separator including a membrane with a permeability differential between oxygen and nitrogen, an air inlet and an inert gas outlet in fluid communication with a first side of the membrane, and a sweep gas inlet and an oxygen-enriched gas outlet in fluid communication with a second side of the membrane. An inert gas flow path is arranged to receive inert gas from the air separation module oxygen-depleted air outlet, and to direct inert gas to the fuel tank. A catalytic reactor is arranged to receive a fuel and air, and configured to catalytically react the fuel and oxygen in the air to form an oxygen-depleted gas, and to discharge the oxygen-depleted gas from a reactor outlet. A sweep gas flow path from the reactor outlet to the air separator sweep gas inlet.
    Type: Application
    Filed: January 3, 2020
    Publication date: July 8, 2021
    Inventors: Zissis A. Dardas, Sean C. Emerson, Ying She, Rajiv Ranjan, Haralambos Cordatos, Matthew Robert Pearson, Eric Surawski
  • Publication number: 20210080552
    Abstract: A scanner of an optical detection system includes a housing, an optical surface coupled to the housing, and an actuator coupled to the optical surface. The optical surface is movable to direct light into an area being scanned and to receive a reflected light pulse from the area being scanned. The actuator is operable to agitate the optical surface to remove debris from the optical surface.
    Type: Application
    Filed: May 6, 2019
    Publication date: March 18, 2021
    Inventors: Suman Dwari, Rajiv Ranjan, Peter R. Harris
  • Publication number: 20210063287
    Abstract: A detection system includes a central manifold including a detection chamber, a pipe network including at least one pipe fluidly coupled to the central manifold, a plurality of inlets formed over a length of the at least one pipe and an aspirating mechanism operable to draw a fluid flow at each of the plurality of inlets through the pipe network to the central manifold. A plurality of independently operable flow control devices is associated with the plurality of inlets. At least one of the plurality of flow control devices includes a solid state flexible polymer deformable in response to application of a voltage.
    Type: Application
    Filed: May 15, 2019
    Publication date: March 4, 2021
    Inventors: Rajiv Ranjan, Suman Dwari, Peter R. Harris
  • Publication number: 20210002766
    Abstract: A method for fabricating a component according to an example of the present disclosure includes the steps of depositing a stoichiometric precursor layer onto a preform, and densifying the preform by depositing a matrix material onto the stoichiometric precursor layer. An alternate method and a component are also disclosed.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 7, 2021
    Inventors: Ying She, Rajiv Ranjan, Zissis A. Dardas, Gajawalli V. Srinivasan, Lesia V. Protsailo
  • Patent number: 10801108
    Abstract: A method for fabricating a component according to an example of the present disclosure includes the steps of depositing a stoichiometric precursor layer onto a preform, and densifying the preform by depositing a matrix material onto the stoichiometric precursor layer. An alternate method and a component are also disclosed.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: October 13, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Ying She, Rajiv Ranjan, Zissis A. Dardas, Gajawalli V. Srinivasan, Lesia V. Protsailo
  • Publication number: 20200318866
    Abstract: A cooling system is provided and includes a compressor, an expansion valve, a gas cooler through which a refrigerant received from the compressor passes toward the expansion valve in a supercritical state, an evaporator interposed between the expansion valve and the compressor and a vapor sorption subcooling system. The vapor sorption subcooling system includes a desorber disposed to remove heat from refrigerant flowing from the gas cooler toward the expansion valve.
    Type: Application
    Filed: March 24, 2020
    Publication date: October 8, 2020
    Inventors: Dhruv Chanakya Hoysall, Yinshan Feng, Parmesh Verma, Bart Antonie van Hassel, Rajiv Ranjan
  • Publication number: 20200171428
    Abstract: A nitrogen generation system includes a heat exchanger for receiving supply air and cooling air and providing temperature conditioned supply air, a flow control valve for controlling a flow of the cooling air through the heat exchanger, and an air separation module for receiving the temperature conditioned supply air and generating nitrogen-enriched air. The nitrogen generation system also includes a sensor for measuring a parameter of the nitrogen-enriched air selected from the group consisting of a temperature, a flow rate, an oxygen concentration, and combinations thereof, and a controller connected to the sensor and the flow control valve for controlling the flow of the cooling air through the heat exchanger based on the parameter of the nitrogen-enriched air measured by the sensor.
    Type: Application
    Filed: January 13, 2020
    Publication date: June 4, 2020
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Publication number: 20200149791
    Abstract: Disclosed is a refrigeration system including a heat transfer fluid circulation loop configured to allow a refrigerant to circulate through the circulation loop. A purge gas outlet is in operable communication with the heat transfer fluid circulation loop. The system also includes at least one gas permeable membrane having a first side in operable communication with the purge gas outlet and a second side. The membrane includes a separation layer including a porous inorganic material with pores of a size to allow passage of contaminants through the membrane and restrict passage of the through the membrane, and a polymer coating over the separation layer. A permeate outlet is in operable communication with the second side of the membrane.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 14, 2020
    Inventors: Rajiv Ranjan, Yinshan Feng, Haralambos Cordatos, Parmesh Verma, Zissis A. Dardas
  • Patent number: 10584906
    Abstract: Disclosed is a refrigeration system including a heat transfer fluid circulation loop configured to allow a refrigerant to circulate therethrough. A purge gas outlet is in operable communication with the heat transfer fluid circulation loop. The system also includes at least one gas permeable membrane having a first side in operable communication with the purge gas outlet and a second side. The membrane includes a porous inorganic material with pores of a size to allow passage of contaminants through the membrane and restrict passage of the refrigerant through the membrane. The system also includes a permeate outlet in operable communication with a second side of the membrane.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: March 10, 2020
    Assignee: CARRIER CORPORATION
    Inventors: Rajiv Ranjan, Haralambos Cordatos, Zissis A. Dardas, Georgios S. Zafiris, Yinshan Feng, Parmesh Verma, Michael A. Stark
  • Publication number: 20200025429
    Abstract: Disclosed is a refrigeration system including a heat transfer fluid circulation loop configured to allow a refrigerant to circulate therethrough, a purge outlet from the heat transfer fluid circulation loop, and at least one gas permeable membrane having a first side in communication with the purge outlet. The membrane includes a porous inorganic material with pores of a size to allow passage of contaminants through the membrane and restrict passage of the refrigerant through the membrane. A retentate return flow path connects the first side of the membrane to the heat transfer fluid circulation loop.
    Type: Application
    Filed: November 9, 2018
    Publication date: January 23, 2020
    Inventors: Rajiv Ranjan, Yinshan Feng, Parmesh Verma, Zissis A. Dardas
  • Patent number: 10493401
    Abstract: A nitrogen generation system includes a heat exchanger for receiving supply air and cooling air and providing temperature conditioned supply air, a flow control valve for controlling a flow of the cooling air through the heat exchanger, and an air separation module for receiving the temperature conditioned supply air and generating nitrogen-enriched air. The nitrogen generation system also includes a sensor for measuring a parameter of the nitrogen-enriched air selected from the group consisting of a temperature, a flow rate, an oxygen concentration, and combinations thereof, and a controller connected to the sensor and the flow control valve for controlling the flow of the cooling air through the heat exchanger based on the parameter of the nitrogen-enriched air measured by the sensor.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: December 3, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Publication number: 20190329177
    Abstract: A nitrogen generation system includes a heat exchanger for receiving supply air and cooling air and providing temperature conditioned supply air, a flow control valve for controlling a flow of the cooling air through the heat exchanger, and an air separation module for receiving the temperature conditioned supply air and generating nitrogen-enriched air. The nitrogen generation system also includes a sensor for measuring a parameter of the nitrogen-enriched air selected from the group consisting of a temperature, a flow rate, an oxygen concentration, and combinations thereof, and a controller connected to the sensor and the flow control valve for controlling the flow of the cooling air through the heat exchanger based on the parameter of the nitrogen-enriched air measured by the sensor.
    Type: Application
    Filed: July 5, 2019
    Publication date: October 31, 2019
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Patent number: 10434465
    Abstract: A nitrogen generation system includes a heat exchanger for receiving supply air and cooling air and providing temperature conditioned supply air, a flow control valve for controlling a flow of the cooling air through the heat exchanger, and an air separation module for receiving the temperature conditioned supply air and generating nitrogen-enriched air. The nitrogen generation system also includes a sensor for measuring a parameter of the nitrogen-enriched air selected from the group consisting of a temperature, a flow rate, an oxygen concentration, and combinations thereof, and a controller connected to the sensor and the flow control valve for controlling the flow of the cooling air through the heat exchanger based on the parameter of the nitrogen-enriched air measured by the sensor.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: October 8, 2019
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Publication number: 20190060828
    Abstract: A nitrogen generation system includes a heat exchanger for receiving supply air and cooling air and providing temperature conditioned supply air, a flow control valve for controlling a flow of the cooling air through the heat exchanger, and an air separation module for receiving the temperature conditioned supply air and generating nitrogen-enriched air. The nitrogen generation system also includes a sensor for measuring a parameter of the nitrogen-enriched air selected from the group consisting of a temperature, a flow rate, an oxygen concentration, and combinations thereof, and a controller connected to the sensor and the flow control valve for controlling the flow of the cooling air through the heat exchanger based on the parameter of the nitrogen-enriched air measured by the sensor.
    Type: Application
    Filed: October 30, 2018
    Publication date: February 28, 2019
    Inventors: Rajiv Ranjan, Zissis A. Dardas
  • Publication number: 20190062913
    Abstract: A method for fabricating a component according to an example of the present disclosure includes the steps of depositing a stoichiometric precursor layer onto a preform, and densifying the preform by depositing a matrix material onto the stoichiometric precursor layer. An alternate method and a component are also disclosed.
    Type: Application
    Filed: August 28, 2017
    Publication date: February 28, 2019
    Inventors: Ying She, Rajiv Ranjan, Zissis A. Dardas, Gajawalli V. Srinivasan, Lesia V. Protsailo