Patents by Inventor Subramanian Esakki
Subramanian Esakki 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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Publication number: 20230326647Abstract: A rotary variable differential transformer for measuring angular displacement and method of manufacturing the same are provided herein. The rotary variable differential transformer includes a stator configured to house a primary coil configured to receive an alternating current, a first secondary coil electromagnetically coupled to the primary coil, and a second secondary coil electromagnetically coupled to the primary coil. The rotary variable differential transformer also includes a rotor positioned concentrically within the stator. The rotor is configured to receive a shaft and rotate with the shaft while the stator remains stationary. The primary coil is positioned at a first radial position within the stator spaced between about 90 to 150 degrees from each of the first secondary coil and the second secondary coil.Type: ApplicationFiled: June 13, 2023Publication date: October 12, 2023Inventors: Paresh SANCHIHAR, Subramanian ESAKKI, Vijayshekhar ARAGANJI
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Patent number: 11715587Abstract: A rotary variable differential transformer for measuring angular displacement and method of manufacturing the same are provided herein. The rotary variable differential transformer includes a stator configured to house a primary coil configured to receive an alternating current, a first secondary coil electromagnetically coupled to the primary coil, and a second secondary coil electromagnetically coupled to the primary coil. The rotary variable differential transformer also includes a rotor positioned concentrically within the stator. The rotor is configured to receive a shaft and rotate with the shaft while the stator remains stationary. The primary coil is positioned at a first radial position within the stator spaced between about 90 to 150 degrees from each of the first secondary coil and the second secondary coil.Type: GrantFiled: May 24, 2019Date of Patent: August 1, 2023Assignee: HONEYWELL INTERNATIONAL INC.Inventors: Paresh Sanchihar, Subramanian Esakki, Vijayshekhar Araganji
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Publication number: 20230147074Abstract: Apparatuses, systems, and methods for sensing rotary positions are provided. For example, an example rotary position sensor includes a rotor assembly having a rotor assembly opening for securing the rotor assembly to a shaft structure, a stator assembly having a stator assembly opening for receiving the shaft structure, and a base assembly secured to the stator assembly. In some examples, the base assembly (such as, but not limited to, a PCB assembly) comprises a plurality of primary coil elements printed on a first side of the base assembly and a plurality of secondary coil elements printed on a second side of the base assembly.Type: ApplicationFiled: October 20, 2022Publication date: May 11, 2023Inventors: Subramanian ESAKKI, John JERRED, Stephen TILLOTSON, Paresh SANCHIHAR, Vijayshekhar ARAGANJI
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Patent number: 10955263Abstract: Apparatuses, systems, and associated methods of assembly are described that provide for improved sensor devices. An example sensor device includes a bobbin tube that defines a hollow interior. The device includes a primary coil element wound around the bobbin tube configured to, in response to a current input, generate a primary magnetic flux and includes a secondary coil element wound around the primary coil element. In an instance in which the bobbin tube receives a probe assembly therein, magnetic interaction between the probe assembly and the primary coil element is configured to induce a signal in the secondary coil element. Furthermore, a pitch of the secondary coil element varies according to a non-linear, polynomial function along a second length of the bobbin tube so as to reduce linearity error of the sensor device.Type: GrantFiled: April 18, 2019Date of Patent: March 23, 2021Assignee: Honeywell International Inc.Inventors: Subramanian Esakki, Aaron Daniels, Vijayshekhar Araganji
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Publication number: 20200373056Abstract: A rotary variable differential transformer for measuring angular displacement and method of manufacturing the same are provided herein. The rotary variable differential transformer includes a stator configured to house a primary coil configured to receive an alternating current, a first secondary coil electromagnetically coupled to the primary coil, and a second secondary coil electromagnetically coupled to the primary coil. The rotary variable differential transformer also includes a rotor positioned concentrically within the stator. The rotor is configured to receive a shaft and rotate with the shaft while the stator remains stationary. The primary coil is positioned at a first radial position within the stator spaced between about 90 to 150 degrees from each of the first secondary coil and the second secondary coil.Type: ApplicationFiled: May 24, 2019Publication date: November 26, 2020Inventors: Paresh SANCHIHAR, Subramanian ESAKKI, Vijayshekhar ARAGANJI
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Publication number: 20200333168Abstract: Apparatuses, systems, and associated methods of assembly are described that provide for improved sensor devices. An example sensor device includes a bobbin tube that defines a hollow interior. The device includes a primary coil element wound around the bobbin tube configured to, in response to a current input, generate a primary magnetic flux and includes a secondary coil element wound around the primary coil element. In an instance in which the bobbin tube receives a probe assembly therein, magnetic interaction between the probe assembly and the primary coil element is configured to induce a signal in the secondary coil element. Furthermore, a pitch of the secondary coil element varies according to a non-linear, polynomial function along a second length of the bobbin tube so as to reduce linearity error of the sensor device.Type: ApplicationFiled: April 18, 2019Publication date: October 22, 2020Inventors: Subramanian ESAKKI, Aaron DANIELS, Vijayshekhar ARAGANJI
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Patent number: 10446310Abstract: A linear variable displacement transformer (LVDT) position sensor. The position sensor comprises a bobbin, a primary coil of wire wound on the bobbin, a first secondary coil wound in stepped layers on the bobbin, and a second secondary coil wound in stepped layers on the bobbin. The first secondary coil comprises a plurality of booster windings at an end of the first secondary coil. The second secondary coil comprises a plurality of booster windings at an end of the second secondary coil opposite the end of the first secondary coil booster windings. The stepped windings of the second secondary coil are complementary to the stepped windings of the first secondary coil.Type: GrantFiled: June 1, 2016Date of Patent: October 15, 2019Assignee: Honeywell International Inc.Inventors: Paresh Sanchihar, Murgesh R. Sajjan, Subramanian Esakki, Aaron Daniels, John Jerred
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Patent number: 10332675Abstract: Embodiments generally relate to linear variable displacement transformer (LVDT) position sensors. The position sensor comprises a bobbin, a moveable core, a primary coil of wire wound around the bobbin, and two secondary coils of wire wound around the bobbin about the primary coil using a fractional winding technique. For example, the winding length of the bobbin may be separated into three consecutive parts. Generally, the primary coil may be wound around the entire winding length of the bobbin. The first secondary coil may be wound around the first and second parts of the winding length. The second secondary coil may be wound around the second and third parts of the winding length. Additionally, the first secondary coil and the second secondary coil may overlap over the second part of the winding length.Type: GrantFiled: January 9, 2017Date of Patent: June 25, 2019Assignee: Honeywell International Inc.Inventors: Subramanian Esakki, Keshava Prasad, Vijayshekhar Araganji, Aaron Daniels, John Jerred
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Patent number: 10024692Abstract: A transformer includes a bobbin, a primary coil, and a pair of secondary coils. The bobbin has an axial bore formed therein. The primary coil is wound on the bobbin and is adapted to be electrically excited with an excitation signal. The secondary coils are disposed adjacent to the primary coil, and are inductively coupled to the primary coil upon electrical excitation of the primary coil. The primary coil is wound on the bobbin such that at least a portion of the primary coil has a cross section shape that is a trapezoid.Type: GrantFiled: July 22, 2015Date of Patent: July 17, 2018Assignee: Honeywell International Inc.Inventors: Subramanian Esakki, Paresh Sanchihar, Vijayshekhar Araganji, Kumaran Sena Narasimhan
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Publication number: 20180197677Abstract: Embodiments generally relate to linear variable displacement transformer (LVDT) position sensors. The position sensor comprises a bobbin, a moveable core, a primary coil of wire wound around the bobbin, and two secondary coils of wire wound around the bobbin about the primary coil using a fractional winding technique. For example, the winding length of the bobbin may be separated into three consecutive parts. Generally, the primary coil may be wound around the entire winding length of the bobbin. The first secondary coil may be wound around the first and second parts of the winding length. The second secondary coil may be wound around the second and third parts of the winding length. Additionally, the first secondary coil and the second secondary coil may overlap over the second part of the winding length.Type: ApplicationFiled: January 9, 2017Publication date: July 12, 2018Inventors: Subramanian Esakki, Keshava Prasad, Vijayshekhar Araganji, Aaron Daniels, John Jerred
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Publication number: 20170352464Abstract: A linear variable displacement transformer (LVDT) position sensor. The position sensor comprises a bobbin, a primary coil of wire wound on the bobbin, a first secondary coil wound in stepped layers on the bobbin, and a second secondary coil wound in stepped layers on the bobbin. The first secondary coil comprises a plurality of booster windings at an end of the first secondary coil. The second secondary coil comprises a plurality of booster windings at an end of the second secondary coil opposite the end of the first secondary coil booster windings. The stepped windings of the second secondary coil are complementary to the stepped windings of the first secondary coil.Type: ApplicationFiled: June 1, 2016Publication date: December 7, 2017Inventors: Paresh Sanchihar, Murgesh R. Sajjan, Subramanian Esakki, Aaron Daniels, John Jerred
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Publication number: 20160334245Abstract: A transformer includes a bobbin, a primary coil, and a pair of secondary coils. The bobbin has an axial bore formed therein. The primary coil is wound on the bobbin and is adapted to be electrically excited with an excitation signal. The secondary coils are disposed adjacent to the primary coil, and are inductively coupled to the primary coil upon electrical excitation of the primary coil. The primary coil is wound on the bobbin such that at least a portion of the primary coil has a cross section shape that is a trapezoid.Type: ApplicationFiled: July 22, 2015Publication date: November 17, 2016Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Subramanian Esakki, Paresh Sanchihar, Vijayshekhar Araganji, Kumaran Sena Narasimhan