Patents by Inventor Vladimir A. Korchagin
Vladimir A. Korchagin 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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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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Publication number: 20160273191Abstract: A center pintle hub coupled to a base of a machine is disclosed. The center pintle hub is casted as a single piece. The center pintle hub includes a disc, a hole, a plurality of protrusions, a hollow cylindrical member, and a plurality of stiffening members. The disc couples to the base and includes a first surface and a second surface. The hole extends from the first surface to the second surface, along a central axis of the disc. The plurality of protrusions, disposed on the second surface, is arranged in an array of square configuration. The plurality of protrusions extends from the second surface and attach to a plurality of stiffeners of the base. The hollow cylindrical member is coupled to the first surface and arranged coaxially with the hole of the disc. The plurality of stiffening members is circumferentially disposed and equally spaced around the hollow cylindrical member.Type: ApplicationFiled: May 31, 2016Publication date: September 22, 2016Applicant: Caterpillar Global Mining LLCInventors: Cheng-Kong C. Wu, Daniel T. Unger, Vladimir A. Korchagin, Jean M. Yaunke
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Publication number: 20120269616Abstract: A driveshaft for an aircraft ram air turbine includes a tubular body and a flange. The tubular body defines an axis of rotation and includes a forward portion and a frusto-conical portion located rearward of the forward portion. The flange adjoins the forward portion of the tubular body opposite the frusto-conical portion, and has a forward face and an opposite rear face. A ratio of an outer diameter of the forward portion of the tubular body to an inner diameter of the forward portion of the tubular body is in a range of approximately 1.423 to 1.425.Type: ApplicationFiled: April 19, 2011Publication date: October 25, 2012Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Stephen Michael Bortoli, Dustin L. Kaap, Paul Henry Verstrate, Vladimir Korchagin