Patents by Inventor Prasad S. Khadkikar
Prasad S. Khadkikar 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).
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Patent number: 9979118Abstract: A hermetic power terminal feed-through for use in high-pressure applications is disclosed as including a fused pin subassembly includes a tubular reinforcing member and a current-conducting pin. The pin passes through the tubular reinforcing member and is fixed thereto by a fusible sealing material to create a hermetic seal. The fused pin subassembly is then joined and hermetically sealed to a terminal body. A method for manufacturing the high-pressure hermetic power terminal feed-through is also disclosed.Type: GrantFiled: October 14, 2013Date of Patent: May 22, 2018Assignee: Emerson Electric Co.Inventors: Prasad S. Khadkikar, Gabriel Lakner
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Publication number: 20160020547Abstract: A hermetic power terminal feed-through for use in high-pressure applications is disclosed as including a fused pin subassembly comprising a tubular reinforcing member and a current-conducting pin. The pin passes through the tubular reinforcing member and is fixed thereto by a fusible sealing material to create a hermetic seal. The fused pin subassembly is then joined and hermetically sealed to a terminal body. A method for manufacturing the high-pressure hermetic power terminal feed-through is also disclosed.Type: ApplicationFiled: October 14, 2013Publication date: January 21, 2016Applicant: Emerson Electric Co.Inventors: Prasad S. KHADKIKAR, Gabriel LAKNER
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Patent number: 8921700Abstract: A hermetic feed-through includes a housing body defining a hollow space, a plurality of conductive pins and a seal structure. The plurality of conductive pins extend through the hollow space. The seal structure is provided in the hollow space and includes a single-piece glass component. The single-piece glass component hermetically seals at least two conductive pins to the housing body and electrically insulates the at least two conductive pins from the housing body.Type: GrantFiled: June 24, 2013Date of Patent: December 30, 2014Assignee: Emerson Electric Co.Inventors: Brian VandenEynden, Prasad S. Khadkikar, Scott Schuckmann, Jian Sun, Gabe Lakner
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Publication number: 20140166357Abstract: A current-conducting pin for a hermetic terminal is disclosed. A bimetallic pin includes an exterior jacket of a first metal material and an interior core of a second material. A recess is formed in at least one of the opposite ends of the pin and a sealing material is disposed in the recess and hermetically seals a annular interface between the exterior jacket and the interior core of the pin.Type: ApplicationFiled: March 7, 2013Publication date: June 19, 2014Applicant: EMERSON ELECTRIC CO.Inventors: Katsuhiko Kato, Hiroshi Yagami, Gerald Ng, Prasad S. Khadkikar, Zhang Zhengqi
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Publication number: 20130284496Abstract: A hermetic feed-through includes a housing body defining a hollow space, a plurality of conductive pins and a seal structure. The plurality of conductive pins extend through the hollow space. The seal structure is provided in the hollow space and includes a single-piece glass component. The single-piece glass component hermetically seals at least two conductive pins to the housing body and electrically insulates the at least two conductive pins from the housing body.Type: ApplicationFiled: June 24, 2013Publication date: October 31, 2013Inventors: Brian VandenEynden, Prasad S. Khadkikar, Scott Schuckmann, Jian Sun, Gabe Lakner
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Patent number: 8487187Abstract: A hermetic feed-through includes a housing body defining a hollow space, a plurality of conductive pins and a seal structure. The plurality of conductive pins extend through the hollow space. The seal structure is provided in the hollow space and includes a single-piece glass component. The single-piece glass component hermetically seals at least two conductive pins to the housing body and electrically insulates the at least two conductive pins from the housing body.Type: GrantFiled: September 9, 2009Date of Patent: July 16, 2013Assignee: Emerson Electric Co.Inventors: Brian VandenEynden, Prasad S. Khadkikar, Scott Schuckmann, Jian Sun, Gabe Lakner
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Patent number: 8378239Abstract: A power terminal feed-through includes a housing body, a plurality of conductive pins, and a seal structure that hermetically seals the conductive pins to the housing body and electrically insulates the conductive pins from the housing body. The seal structure includes a first material fused to one of the housing body and the conductive pin, and a second material fused to the other one of the housing body and the conductive pin. The first and second materials may be properly chosen to match thermal expansion of the housing body and the conductive pins, respectively.Type: GrantFiled: December 24, 2008Date of Patent: February 19, 2013Assignee: Emerson Electric Co.Inventors: Gabe Lakner, Jian Sun, Prasad S. Khadkikar
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Publication number: 20110108320Abstract: A power terminal feed-through includes a housing body, a plurality of conductive pins, and a seal structure that hermetically seals the conductive pins to the housing body and electrically insulates the conductive pins from the housing body. The seal structure includes a first material fused to one of the housing body and the conductive pin, and a second material fused to the other one of the housing body and the conductive pin. The first and second materials may be properly chosen to match thermal expansion of the housing body and the conductive pins, respectively.Type: ApplicationFiled: December 24, 2008Publication date: May 12, 2011Applicant: EMERSON ELECTRIC CO.Inventors: Gabe Lakner, Jian Sun, Prasad S. Khadkikar
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Publication number: 20110056731Abstract: A hermetic feed-through includes a housing body defining a hollow space, a plurality of conductive pins and a seal structure. The plurality of conductive pins extend through the hollow space. The seal structure is provided in the hollow space and includes a single-piece glass component. The single-piece glass component hermetically seals at least two conductive pins to the housing body and electrically insulates the at least two conductive pins from the housing body.Type: ApplicationFiled: September 9, 2009Publication date: March 10, 2011Applicant: EMERSON ELECTRIC CO.Inventors: Brian VandenEynden, Prasad S. Khadkikar, Scott Schuckmann, Jian Sun, Gabe Lakner
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Patent number: 7900588Abstract: A fuel fired appliance exhaust gas parameter sensor for continually detecting gas parameter emissions, such as CO, NOx and O2, may be located above the appliance near the appliance exhaust outlet. The sensor may be located near or under a draft hood located near the exhaust outlet. The sensor remains relatively cool by draft air moving from outside the draft hood and into a chimney, the draft being hastened by the heated, rising chimney gases. A sensor bracket may be attached to the appliance and the sensor to appropriately position the sensor under the draft hood. Alternatively, the sensor may be located on a tube that continually samples combustion exhaust. The tube may be located outside of the draft hood perimeter to maintain a low sensor temperature, while multiple tube coils around the exhaust outlet may be used to further cool the sampled gas.Type: GrantFiled: February 10, 2006Date of Patent: March 8, 2011Assignee: Therm-O-Disc, IncorporatedInventors: Bernd D. Zimmermann, David Reynolds, Prasad S. Khadkikar
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Patent number: 7421883Abstract: A sensor system for detecting the presence of a target analyte. The system comprises a first conductor, a second conductor, and a sensor film. The sensor film is positioned between the first conductor and the second conductor. The sensor film includes a crosslinked siloxane polymer comprising a monomer having a hydrocarbon side group. The sensor film has an absorptive affinity for the target analyte. The electrical capacitance of the sensor system changes upon absorption of the target analyte by the sensor film.Type: GrantFiled: December 8, 2005Date of Patent: September 9, 2008Assignee: Therm-O-Disc, IncorporatedInventors: Prasad S. Khadkikar, Praveen Ramamurthy, Bernd D. Zimmermann
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Patent number: 7112304Abstract: A chemiresistor sensor probe for detecting target analytes. The probe includes a body having a first control surface and a second control surface recessed within the first. A sensor film comprises numerous conductive particles disposed upon the second surface. The film swells upon absorbing one or more analytes for which it has an affinity, thus causing the conductive particles to become more dispersed and increasing the resistance between the particles. The thickness of the film is equal to the distance between the first surface and the second surface, thus permitting the thickness to be controlled by varying the distance between the control surfaces. The robustness of the sensor probe is enhanced by placing a porous or mesh electrode along with, or in place of, a chemical binding agent between the film and the terminals. The robustness is also improved by placing a diode in series with the sensor circuit.Type: GrantFiled: April 11, 2003Date of Patent: September 26, 2006Assignee: Therm-O-Disc, IncorporatedInventors: Jared Starling, Prasad S. Khadkikar, Robert Sterken, Charles L. Volz, Edward J. Blok, Donald E. Donnelly
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Patent number: 6868350Abstract: A method for operating a sensing device. The method comprising: a sensor film having an electrical resistance that is adapted to change in response to the presence of a predetermined condition; detecting the presence of the predetermined condition; measuring the electrical resistance of the sensor film at a first time; measuring the electrical resistance of the sensor film at a second time; determining a rate of change of the electrical resistance between the first time and the second time; and comparing the rate of change of the electrical resistance against a threshold value.Type: GrantFiled: April 11, 2003Date of Patent: March 15, 2005Assignee: Therm-O-Disc, IncorporatedInventors: Bernd D. Zimmermann, Prasad S. Khadkikar, Lance A. Bostic
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Publication number: 20040204920Abstract: A method for operating a sensing device. The method comprising: a sensor film having an electrical resistance that is adapted to change in response to the presence of a predetermined condition; detecting the presence of the predetermined condition; measuring the electrical resistance of the sensor film at a first time; measuring the electrical resistance of the sensor film at a second time; determining a rate of change of the electrical resistance between the first time and the second time; and comparing the rate of change of the electrical resistance against a threshold value.Type: ApplicationFiled: April 11, 2003Publication date: October 14, 2004Inventors: Bernd D. Zimmermann, Prasad S. Khadkikar, Lance A. Bostic
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Publication number: 20040200722Abstract: A chemiresistor sensor probe for detecting target analytes. The probe includes a body having a first control surface and a second control surface recessed within the first. A sensor film comprises numerous conductive particles disposed upon the second surface. The film swells upon absorbing one or more analytes for which it has an affinity, thus causing the conductive particles to become more dispersed and increasing the resistance between the particles. The thickness of the film is equal to the distance between the first surface and the second surface, thus permitting the thickness to be controlled by varying the distance between the control surfaces. The robustness of the sensor probe is enhanced by placing a porous or mesh electrode along with, or in place of, a chemical binding agent between the film and the terminals. The robustness is also improved by placing a diode in series with the sensor circuit.Type: ApplicationFiled: April 11, 2003Publication date: October 14, 2004Inventors: Jared Starling, Prasad S. Khadkikar, Robert Sterken, Charles L. Volz, Edward J. Blok, Donald E. Donnelly
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Publication number: 20030127061Abstract: An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue pipe construction comprises inner and outer concentric flue pipes which define an air space therebetween and one or more valve arrangements associated therewith to selectively restrict air flow through such air space. The valve arrangements include a thermally responsive actuator operative to open and close the valve member in response to heat generated by firing of the burner assembly without the need for any external power supply or interlocks.Type: ApplicationFiled: January 9, 2002Publication date: July 10, 2003Inventors: Prasad S. Khadkikar, Richard L. Gerich, Christine M. Hudson, Jeffrey A. West, Derek J. Rose, Douglas J. Kempf, Douglas E. Prather, Richard E. Welch
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Patent number: 6584940Abstract: An improved flue pipe construction particularly adapted for a fuel fired water heater is disclosed which serves to reduce or minimize heat loss when the water heater is in a standby mode. The flue pipe construction comprises inner and outer concentric flue pipes which define an air space therebetween and one or more valve arrangements associated therewith to selectively restrict air flow through such air space. The valve arrangements include a thermally responsive actuator operative to open and close the valve member in response to heat generated by firing of the burner assembly without the need for any external power supply or interlocks.Type: GrantFiled: January 9, 2002Date of Patent: July 1, 2003Assignee: Therm-O-Disc, IncorporatedInventors: Prasad S. Khadkikar, Richard L. Gerich, Christine M. Hudson, Jeffrey A. West, Derek J. Rose, Douglas J. Kempf, Douglas E. Prather, Richard E. Welch
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Patent number: D749515Type: GrantFiled: November 17, 2014Date of Patent: February 16, 2016Assignee: Emerson Electric Co.Inventors: Scott Schuckmann, Prasad S. Khadkikar
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Patent number: D749516Type: GrantFiled: November 17, 2014Date of Patent: February 16, 2016Assignee: Emerson Electric Co.Inventors: Scott Schuckmann, Prasad S. Khadkikar
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Patent number: D749517Type: GrantFiled: November 17, 2014Date of Patent: February 16, 2016Assignee: Emerson Electric Co.Inventors: Scott Schuckmann, Prasad S. Khadkikar