Patents by Inventor Aruna Kinjarapu
Aruna Kinjarapu 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: 11773563Abstract: A dipper handle includes a dipper tube, a dipper engagement member, and an intermediate member between the dipper tube and the dipper engagement member. The dipper tube has a substantially cylindrical outer surface and a contoured inner surface. The contoured inner surface results in multiple wall thicknesses for the dipper tube, including a first thickness proximate a first end and a second, larger thickness, proximate a second end. The second end is configured for coupling to the intermediate member.Type: GrantFiled: August 19, 2021Date of Patent: October 3, 2023Assignee: Caterpillar Global Mining LLCInventors: Adam J. Thomas, Michael W. Haws, Aruna Kinjarapu, Cristian Zaharia, Vladimir A. Korchagin
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Patent number: 11753791Abstract: A dipper handle assembly includes a tube coupled to a yoke. The yoke has a collar extending along a collar axis, a transition portion, a first arm and a second arm. The transition portion includes a distal end having first and second lateral sections and first and second transverse sections. The first and second lateral sections and the first and second transverse sections all lie in a virtual transition portion distal end plane, and the virtual transition portion distal end plane intersects the collar axis at an oblique angle.Type: GrantFiled: December 22, 2021Date of Patent: September 12, 2023Assignee: Caterpillar Global Mining LLCInventors: Cristian Zaharia, Michael W. Haws, Aruna Kinjarapu, Vladimir A. Korchagin, James G. Jamilosa
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Publication number: 20230193583Abstract: A dipper handle assembly includes a tube coupled to a yoke. The yoke has a collar extending along a collar axis, a transition portion, a first arm and a second arm. The transition portion includes a distal end having first and second lateral sections and first and second transverse sections. The first and second lateral sections and the first and second transverse sections all lie in a virtual transition portion distal end plane, and the virtual transition portion distal end plane intersects the collar axis at an oblique angle.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Applicant: Caterpillar Global Mining LLCInventors: Cristian ZAHARIA, Michael W. HAWS, Aruna KINJARAPU, Vladimir A. KORCHAGIN, James G. JAMILOSA
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Publication number: 20230193584Abstract: A yoke of a dipper handle comprises a collar and a crowd pin aperture extending along a crowd pin aperture axis. First and second arms of the yoke include dipper pin lug apertures aligned along a dipper pin aperture axis parallel to the crowd pin aperture axis. The first and second arms of the yoke further include first and second pitch brace lug apertures aligned along a pitch brace aperture axis parallel to the crowd pin aperture axis. A first virtual reference line extends between the crowd pin aperture axis and the dipper pin aperture axis, while a second virtual reference line extends between the crowd pin aperture axis and the pitch brace aperture axis. An included angle ? between the first virtual reference line and the second virtual reference line is between approximately 25 to approximately 51 degrees.Type: ApplicationFiled: December 22, 2021Publication date: June 22, 2023Applicant: Caterpillar Global Mining LLCInventors: Cristian ZAHARIA, Michael W. HAWS, Aruna KINJARAPU, Vladimir A. KORCHAGIN, James G. JAMILOSA
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Publication number: 20230056316Abstract: A dipper handle includes a dipper tube, a dipper engagement member, and an intermediate member between the dipper tube and the dipper engagement member. The dipper tube has a substantially cylindrical outer surface and a contoured inner surface. The contoured inner surface results in multiple wall thicknesses for the dipper tube, including a first thickness proximate a first end and a second, larger thickness, proximate a second end. The second end is configured for coupling to the intermediate member.Type: ApplicationFiled: August 19, 2021Publication date: February 23, 2023Applicant: Caterpillar Global Mining LLCInventors: Adam J. Thomas, Michael W. Haws, Aruna Kinjarapu, Cristian Zaharia, Vladimir A. Korchagin
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Publication number: 20220348273Abstract: A transition track slider has a hollow body including a first side surface, a second side surface, a bottom surface at least partially interposed between the first side surface and the second side surface, and that also defines a cavity. A front surface with a bullet nose configuration connects the first side surface to the second side surface, and to the bottom surface, while a rear surface connects the first side surface to the second side surface, and to the bottom surface. A top surface extends from the rear surface toward the front surface.Type: ApplicationFiled: April 29, 2021Publication date: November 3, 2022Applicant: Caterpillar Global Mining Equipment LLCInventors: Cristian Zaharia, Elizabeth J. Barnes, Michael W. Haws, Mircea Dumitru, Aruna Kinjarapu
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Publication number: 20220348274Abstract: A track slider mounting plate kit includes a first shark fin configured mounting plate including a first bottom mounting surface, a first beveled surface extending from the first bottom mounting surface, and a second beveled surface that extends from the first beveled surface, forming a first oblique angle with the second beveled surface. A track slider is attached to the first shark fin configured mounting plate that has a top surface extending from the rear surface toward the front surface defining a top surface radius of curvature ranging from 2200 mm to 2600 mm.Type: ApplicationFiled: April 29, 2021Publication date: November 3, 2022Applicant: Caterpillar Global Mining Equipment LLCInventors: Cristian Zaharia, Elizabeth J. Barnes, Michael W. Haws, Mircea Dumitru, Aruna Kinjarapu
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Patent number: 11220801Abstract: A center pintle hub to be affixed to a base of a machine. The center pintle hub includes a base portion and a support portion. The base portion is formed to be affixed to the base. The support portion extends from the base portion and has a frusto-conical shape that can receive a center pintle shaft. The center pintle shaft can support a frame of the machine and provide rotation of the frame with respect to the base.Type: GrantFiled: July 17, 2019Date of Patent: January 11, 2022Assignee: Caterpillar Global Mining LLCInventors: Joe A. Rapp, Cheng-Kong C. Wu, Vladimir A. Korchagin, Aruna Kinjarapu, Robin Varghese
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Publication number: 20210017735Abstract: A center pintle hub to be affixed to a base of a machine. The center pintle hub includes a base portion and a support portion. The base portion is formed to be affixed to the base. The support portion extends from the base portion and has a frusto-conical shape that can receive a center pintle shaft. The center pintle shaft can support a frame of the machine and provide rotation of the frame with respect to the base.Type: ApplicationFiled: July 17, 2019Publication date: January 21, 2021Applicant: Caterpillar Inc.Inventors: Joe A. Rapp, Cheng-Kong C. Wu, Vladimir A. Korchagin, Aruna Kinjarapu, Robin Varghese
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Patent number: 10144622Abstract: A modular hoist drum is disclosed for use with a power shovel. The modular hoist drum may have a first outer body, a second outer body, and an anchor body that are hollow and generally cylindrical. The anchor body is connected between the first outer body and the second outer body. The anchor body may include an internal anchor configured to receive a ferrule.Type: GrantFiled: June 6, 2016Date of Patent: December 4, 2018Assignee: Caterpillar Global Mining LLCInventors: Aruna Kinjarapu, Robin Varghese, Sivakumar Subramaniam, Tridib K. Das, Joseph A. Rapp, Narendra Thippappa, Gurbachan S. Bumraw
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Publication number: 20170349415Abstract: A modular hoist drum is disclosed for use with a power shovel. The modular hoist drum may have a first outer body, a second outer body, and an anchor body that are hollow and generally cylindrical. The anchor body is connected between the first outer body and the second outer body. The anchor body may include an internal anchor configured to receive a ferrule.Type: ApplicationFiled: June 6, 2016Publication date: December 7, 2017Applicant: Caterpillar Global Mining LLCInventors: Aruna Kinjarapu, Robin Varghese, Sivakumar Subramaniam, Tridib K. Das, Joseph A. Rapp, Narendra Thippappa, Gurbachan S. Bumraw
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Publication number: 20160222625Abstract: A boom uses formed plates instead of a round pipes for the chords of the boom. Each formed plate provides a flat surface for attaching lacings so that complex coping cuts required for round pipe chords can be eliminated. The boom also displaces lacing attachment points so that overlapping welds in previous boom assemblies are also eliminated. The open back of the formed plate and non-overlapping lacing attachment points eliminate hidden welds and obscured mounting surfaces that make inspections and repairs of current boom assemblies difficult or impossible.Type: ApplicationFiled: January 30, 2015Publication date: August 4, 2016Inventors: Jason Trotnow, Brian Niggemann, Aruna Kinjarapu