Patents Assigned to AT&T Technologies
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Patent number: 11118604Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism. The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to stopping of the rotary mechanism. A control system coupled to the primary accumulator through a hydraulic supply circuit is configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.Type: GrantFiled: November 9, 2018Date of Patent: September 14, 2021Assignee: L&T TECHNOLOGY SERVICES LIMITEDInventors: Atul Chandra Tripathi, Shailendra J Shrivastava
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Publication number: 20210124342Abstract: This disclosure relates to a method and system for monitoring health and predicting failure of an electro-mechanical machine. In an embodiment, the method may include receiving a plurality of operational parameters with respect to the electro-mechanical machine and determining a set of features and a set of events, based on the plurality of operational parameters. The method may further include detecting one or more fault signatures associated the electro-mechanical machine based on at least one of the plurality of operational parameters, the set of features, or the set of events. The method may further include determining at least one of a time to the possible failure and a remaining useful life of the electro-mechanical machine based on at least one of the plurality of operational parameters, the set of features, the set of events, or the one or more fault signature, by using a hybrid machine learning model.Type: ApplicationFiled: March 28, 2019Publication date: April 29, 2021Applicant: L&T TECHNOLOGY SERVICES LIMITEDInventors: Shailendra SHUKLA, Mayur J DHAMELIYA, Ratheen CHATURVEDI, Santosh JADHAV, Uddipan PAUL, Siddhant MALHOTRA
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Publication number: 20210084089Abstract: This disclosure relates to methods and systems for providing contemporaneous audio streaming from a host Bluetooth device (201) to a plurality of receiving Bluetooth devices (202). In an embodiment, a method (400) may include disabling a stream end point (SEP) restriction in an audio streaming profile of a Bluetooth protocol stack of the host Bluetooth device (201) to allow contemporaneous connection between the host Bluetooth device (201) and each of the plurality of receiving Bluetooth devices (202). The method may further include creating one or more streaming sessions in the Bluetooth protocol stack in response to one or more connection requests from one or more receiving Bluetooth devices, wherein the one or more streaming sessions are mutually independent of each other, and wherein each streaming session correspond to one receiving Bluetooth device and comprise an instance of an audio streaming protocol and an instance of a streaming channel.Type: ApplicationFiled: March 28, 2019Publication date: March 18, 2021Applicant: L&T TECHNOLOGY SERVICES LIMITEDInventors: Abhirup Anjan Mitra, Sanjay Shivkumar Mishra, Avinash Ramesh Barai
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Publication number: 20210018019Abstract: This disclosure relates to a hydraulic system for a hydro-mechanical machine comprising a rotary mechanism. The hydraulic system includes a primary accumulator configured to receive and store high-pressure fluid in response to stopping of the rotary mechanism. A control system coupled to the primary accumulator through a hydraulic supply circuit is configured to enable passage of the high-pressure fluid stored in the primary accumulator to a rotary control valve configured to control the rotary mechanism, through the hydraulic supply circuit, based on a predefined pressure threshold associated with the primary accumulator. A secondary accumulator coupled to the primary accumulator and the control system via the hydraulic supply circuit is configured to store surplus high-pressure fluid provided by the primary accumulator through the hydraulic supply circuit.Type: ApplicationFiled: November 9, 2018Publication date: January 21, 2021Applicant: L&T TECHNOLOGY SERVICES LIMITEDInventors: Atul CHANDRA TRIPATHI, Shailendra J SHRIVASTAVA
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Patent number: 10801097Abstract: This invention relates to thermal spray coatings and processes onto non-smooth surfaces. The coating and processes can coat non-smooth surfaces without substantial degradation of the underlying surface texture or profile of the non-smooth surfaces so as to sufficiently preserve the underlying surface texture or profile. The ability for coating fractional coverage to maintain the surface profile while maintaining wear resistance is unprecedented by conventional thermal spray processes.Type: GrantFiled: December 15, 2016Date of Patent: October 13, 2020Assignee: Praxair S.T. Technology, Inc.Inventors: Michael S Brennan, Daming Wang, Ardy Kleyman
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Publication number: 20200294254Abstract: A method of generating a composite image from multiple images captured for a subject is disclosed. In some embodiments, the method may include receiving, via an image capturing device, a plurality of sets of images of at least a portion of a subject. The images within a set of images may be captured at a plurality of vertical positions with respect to an associated fixed section of a horizontal plane. The method may further include generating a plurality of focus-stacked images corresponding to the plurality of sets of images, for example, by combining the images in the associated set of images. The method may further include aligning the plurality of focus-stacked images in the horizontal plane based on a horizontal coordinate transformation model to generate a composite image representing the subject.Type: ApplicationFiled: March 12, 2020Publication date: September 17, 2020Applicant: L&T TECHNOLOGY SERVICES LIMITEDInventors: SUNIL KV, KASTHURI THIYAGARAJAN, ARANGARAJAN P, GINEESH SUKUMARAN, KARTHIGEYAN S
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Patent number: 10533255Abstract: Novel slurry formulations and processes for forming improved protective coatings used in the hot section components of gas turbine engines are provided. The process includes a unique two-step deposition methodology whereby the required concentration of reactive element within an improved reactive element doped aluminide coating can be consistently produced in a reproducible manner.Type: GrantFiled: August 22, 2016Date of Patent: January 14, 2020Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Zhihong Tang, Kevin E Garing, James K Knapp, Albert Feuerstein, Thomas F Lewis, III
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Patent number: 10407762Abstract: A novel dual layer mask formulation is provided. In particular, the mask has a unique composition that protects the integrity of an underlying chromide coating, prevents chromium depletion from the chromide coating and prevents a subsequent aluminide coating from being deposited thereon.Type: GrantFiled: August 22, 2016Date of Patent: September 10, 2019Assignee: PRAXAIR S. T. TECHNOLOGY, INC.Inventors: Zhihong Tang, Kevin E Garing
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Patent number: 10234160Abstract: According to embodiments of the invention, a system 200 and method 100 for identifying CO2 concentration in a building area using an imaging device 10 is disclosed. The disclosed method and system includes capturing the number of living beings present in a particular area of the building by the imaging device 10, identifying the active state of the living beings and categorizing the active state as per predefined criteria and identifying the CO2 concentration based on the size of the building area, total number of living beings present in the building area and the active state of the living beings at a given point of time.Type: GrantFiled: August 13, 2015Date of Patent: March 19, 2019Assignee: L&T TECHNOLOGY SERVICES LIMITEDInventors: Krishnamoorthy Raman, Gineesh Sukumaran
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Patent number: 10156007Abstract: Unique and improved chromizing processes are disclosed. The processes involve forming localized chromizing coatings onto selected regions of a substrate. The chromium diffusion coatings are locally applied to selected regions of substrates in a controlled manner, in comparison to conventional chromizing processes, and further in a manner that produces less material waste and does not require diffusion-stop-off masking. Prior to or after a localized slurry chromizing process of the present invention, a layer of a platinum-group-metal (PGM) is applied to produce a PGM-modified chromium diffusion coating onto selected regions of a substrate. A second coating can be selectively applied onto other regions of the substrate.Type: GrantFiled: January 25, 2017Date of Patent: December 18, 2018Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Zhihong Tang, Kevin E Garing, Thomas D Findlay, Thomas F Lewis, III, James K Knapp, Jeffrey J McConnell
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Patent number: 10023939Abstract: A unique sequence of steps is provided to reduce contaminants along one or more surfaces and faces of gold evaporative sources without deleteriously impacting the structure of the gold evaporative sources. Edges are deburred; contaminants are successfully removed therealong; and surface smoothness is substantially retained. The resultant gold evaporative source is suitable for use in evaporative processes as a precursor to gold film deposition without the occurrence or a substantial reduction in the likelihood of spitting by virtue of significantly reduced levels of contaminants, in comparison to gold evaporative sources subject to a standard cleaning protocol.Type: GrantFiled: September 26, 2017Date of Patent: July 17, 2018Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Wendell R. Stuber, Ernesto Aviles, Jaydeep Sarkar, Paul S. Gilman
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Patent number: 9970094Abstract: Unique and improved chromium coatings derived from modified chromium-containing slurry formulations are disclosed. The slurry formulation includes a combination of a selected halide activator and buffer material that synergistically interact with each other to form chromium diffusion coatings with improved microstructure in comparison to chromium diffusion coatings produced from conventional chromizing processes. The coatings may be locally applied in a controlled manner with accuracy onto various parts, including those having internal sections with complex geometries, without masking any portion thereof.Type: GrantFiled: January 8, 2015Date of Patent: May 15, 2018Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Zhihong Tang, Kevin E. Garing, Thomas D. Findlay, Thomas F. Lewis, III, James K. Knapp
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Patent number: 9957629Abstract: A modified electroplated nickel-based metallic alloy coating and method of forming the same is provided. The electroplated coatings exhibit unique microstructure and composition which improves performance over conventional metallic materials. The coatings have significantly higher strength at elevated service temperatures.Type: GrantFiled: August 26, 2015Date of Patent: May 1, 2018Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: John Foster, Zhihong Tang, Kevin Garing, Bradley J. Burton, Thomas F. Lewis, III
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Patent number: 9897792Abstract: The invention relates to an image processing method and system for constructing composite image with extended depth of field. The composite image may be constructed from a plurality of source images of a scene stored in an image stack. The method includes aligning the images in the image stack such that every image in the image stack is aligned with other images in the stack, performing illumination and color correction on the aligned images in the image stack, generating an energy matrix for each pixel of each illumination and color corrected image in the image stack by computing energy content for each pixel, generating a raw index map that contains the location of every pixels having maximum energy level among all the images in the image stack, generating degree of defocus ma and constructing the composite image.Type: GrantFiled: November 4, 2013Date of Patent: February 20, 2018Assignee: L&T TECHNOLOGY SERVICES LIMITEDInventors: Rabi Rout, Vajendra Desai, Harikrishnan Ramaraju, Gineesh Sukumaran, Sistu Ganesh, Devvrata Priyadarshi, Eldho Abraham, Saurabh Mishra, Sudipta Kumar Sahoo, Nivedita Tripathi, Siddhartha Goutham, Kunal Gauraw
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Patent number: 9866623Abstract: The invention relates to communication between computers such as servers within a content distribution network, where the communication is carried over the Internet in which bandwidth usage and cost are of concern, and particularly to a system and method for optimizing inter-node communication in a content distribution network. The method includes: generating a mutable warm dictionary for a specific domain according to a current inter-node communication; generating a fixed warm dictionary for the specific domain from the mutable warm dictionary; and performing the next inter-node communication for the specific domain according to the fixed warm dictionary.Type: GrantFiled: October 8, 2012Date of Patent: January 9, 2018Assignee: BEIJING BLUE I.T. TECHNOLOGIES CO., LTD.Inventors: Michael Talyansky, Alexei Tumarkin
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Publication number: 20170370603Abstract: According to embodiments of the invention, a system 200 and method 100 for identifying CO2 concentration in a building area using an imaging device 10 is disclosed. The disclosed method and system includes capturing the number of living beings present in a particular area of the building by the imaging device 10, identifying the active state of the living beings and categorizing the active state as per predefined criteria and identifying the CO2 concentration based on the size of the building area, total number of living beings present in the building area and the active state of the living beings at a given point of time.Type: ApplicationFiled: August 13, 2015Publication date: December 28, 2017Applicant: L&T TECHNOLOGY SERVICES LIMITEDInventors: Krishnamoorthy RAMAN, Gineesh SUKUMARAN
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Patent number: 9802233Abstract: A unique sequence of steps is provided to reduce contaminants along one or more surfaces and faces of gold evaporative sources without deleteriously impacting the structure of the gold evaporative sources. Edges are deburred; contaminants are successfully removed therealong; and surface smoothness is substantially retained. The resultant gold evaporative source is suitable for use in evaporative processes as a precursor to gold film deposition without the occurrence or a substantial reduction in the likelihood of spitting by virtue of significantly reduced levels of contaminants, in comparison to gold evaporative sources subject to a standard cleaning protocol.Type: GrantFiled: May 1, 2014Date of Patent: October 31, 2017Assignee: Praxair S. T. Technology, Inc.Inventors: Wendell R. Stuber, Ernesto Aviles, Jaydeep Sarkar, Paul S. Gilman
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Patent number: 9789513Abstract: A modular, rotisserie type tooling fixture assembly for use in a coating operation and method of its use are disclosed. The tooling fixture assembly includes an arbor or shaft and a retaining base with a plurality of anchor members disposed in a prescribed radial orientation from the center of the retaining base, the anchor members are uniquely configured or adapted to retain a plurality of workpieces to be coated. The tooling fixture assembly further comprises a unique workpiece masking arrangement that employs a unitary masking cap having a plurality of solid walls or surfaces adapted to cover portions of the plurality of workpieces in a masking relationship.Type: GrantFiled: December 7, 2012Date of Patent: October 17, 2017Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Albert Feuerstein, Andrew Thomas Westfall, Thomas F. Lewis, III, David A. McPherson, Ardy Kleyman, Don Lemen
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Patent number: 9771644Abstract: A method for applying an aluminide coating includes applying an aluminum-based slurry onto an elongated member. The elongate member is introduced through an opening of a component and positioned within a cavity of the component at a location that is spaced apart from the internal surfaces of the component. Heat is applied to generate vaporized aluminum which diffuses into the internal surfaces of the component. Aluminum reacts with the internal surfaces to form an aluminide coating.Type: GrantFiled: November 6, 2014Date of Patent: September 26, 2017Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Kevin E. Garing, Jeffrey J. McConnell, Carl Hugo Hutzler, III
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Patent number: 9761420Abstract: The present invention relates to novel and improved high purity diffusion bonded copper (Cu) sputtering targets having a Cu purity level of 99.9999% (6N) or greater. The target assemblies of the present invention exhibit sufficient bond strength and microstructural homogeneity, both of which are properties previously considered mutually exclusive for conventional 6N Cu target assemblies. The grain structure is characterized by an absence of alloying elements and the bonded interface is generally flat without any type of interlayer or interlocking arrangement.Type: GrantFiled: December 13, 2013Date of Patent: September 12, 2017Assignee: PRAXAIR S.T. TECHNOLOGY, INC.Inventors: Jaydeep Sarkar, Paul Gilman