Patents by Inventor Prabhu Shankar
Prabhu Shankar 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: 20240034607Abstract: A lift device includes a chassis, a platform configured to support an operator, the platform including an attachment point configured to engage a lanyard to secure the operator to the platform, a lift assembly coupling the platform to the chassis and configured to raise the platform relative to the chassis, a sensor configured to provide sensor data indicative of engagement between the attachment point and the lanyard, and a controller operatively coupled to the sensor. The controller is configured to determine, based on the sensor data, if the lanyard is engaged with the attachment point. In response to a determination that the lanyard is not engaged with the attachment point, the controller is configured to at least one of (a) activate an alarm to provide a notification to alert the operator that the lanyard is not engaged with the attachment point or (b) limit movement of the lift device.Type: ApplicationFiled: July 28, 2023Publication date: February 1, 2024Inventors: Prabhu Shankar, Matthew Seifarth, Michael Buhidar, Shashank Bhatia
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Publication number: 20230416062Abstract: A lift device includes a base, a retractable lift assembly, a coupler, an electro-mechanical device, and a battery pack. The base includes an electric drive and at least two rotatable wheels powered by the electric drive. The retractable lift assembly includes a first end coupled to the base and a second end that is movable relative to the base. The coupler is mounted to a first surface of the retractable lift assembly and includes at least one mounting stud, the at least one mounting stud extending outwardly away from the coupler. The electro-mechanical device is detachably coupled to the at least one mounting stud and is repositionable relative to the retractable lift assembly. The battery pack is electrically connected to the electric drive and the retractable lift assembly.Type: ApplicationFiled: September 12, 2023Publication date: December 28, 2023Applicant: Oshkosh CorporationInventors: Janine Borofka, Peter Tan, Gregory S. Brulo, Jihong Hao, Prabhu Shankar
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Publication number: 20230416061Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.Type: ApplicationFiled: September 12, 2023Publication date: December 28, 2023Applicant: Oshkosh CorporationInventors: Prabhu Shankar, Louis Bafile, Jihong Hao, Eko Prasetiawan, Scott Riley, David Lombardo
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Patent number: 11802031Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.Type: GrantFiled: August 4, 2022Date of Patent: October 31, 2023Assignee: Oshkosh CorporationInventors: Prabhu Shankar, Louis Bafile, Jihong Hao, Eko Prasetiawan, Scott Riley, David Lombardo
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Patent number: 11787674Abstract: A lift device includes a base including at least two rotatable wheels, a retractable lift assembly, and a coupler. The retractable lift assembly includes a first end coupled to the base and a second end that is movable relative to the base. The coupler is attached to the retractable lift assembly a distance from the first end and is configured to detachably couple the retractable lift assembly to an electro-mechanical device. The coupler includes a first flange, a second flange, a pair of diametrically opposed mounting studs, and a pin. Each one of the pair of mounting studs extends from a respective one of the first flange and the second flange. The pin extends through at least one of the first flange or the second flange below the pair of mounting studs.Type: GrantFiled: March 5, 2021Date of Patent: October 17, 2023Assignee: Oshkosh CorporationInventors: Janine Borofka, Peter Tan, Gregory S. Brulo, Jihong Hao, Prabhu Shankar
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Publication number: 20230286571Abstract: A lift device includes a base having two front wheels and two rear wheels, a retractable lift mechanism having a first end coupled to the base, a platform coupled to and supported by a second end of the retractable lift mechanism, and a steering system. The steering system includes a second linear actuator coupled to a first front wheel of the two front wheels and a third linear actuator coupled to a second front wheel of the two front wheels. The two front wheels are spaced from the two rear wheels in a longitudinal direction. The retractable lift mechanism includes a first linear actuator extending along the longitudinal direction and configured to transition the retractable lift mechanism between a stowed position and a deployed position. The second linear actuator and the third linear actuator extend generally along the longitudinal direction.Type: ApplicationFiled: May 19, 2023Publication date: September 14, 2023Applicant: Oshkosh CorporationInventors: Jihong HAO, Derek WILLIAMS, Prabhu SHANKAR, Devin ROSENCRANCE
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Publication number: 20230286570Abstract: A lift device includes a base, a retractable lift mechanism having a first end coupled to the base, a platform coupled to and supported by a second end of the retractable lift mechanism, and a steering system. The base includes a first wheel and a second wheel laterally spaced from the first wheel, and a third wheel and a fourth wheel laterally spaced from the third wheel. The third wheel and the fourth wheel are both pivotally fixed. The steering system includes a first electric actuator coupled to the first wheel and configured to independently control a steering direction of the first wheel, and a second electric actuator coupled to the second wheel and configured to independently control a steering direction of the second wheel.Type: ApplicationFiled: May 19, 2023Publication date: September 14, 2023Applicant: Oshkosh CorporationInventors: Jihong HAO, Derek WILLIAMS, Prabhu SHANKAR, Devin ROSENCRANCE
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Publication number: 20230264931Abstract: A lift vehicle includes a chassis, an implement, a lift arm coupling the implement to the chassis, a load sensor, a tilt sensor, and a controller. The lift arm includes an actuator configured to selectively extend the lift arm and a length sensor configured to provide data relating to a length of the lift arm. The load sensor can provide data relating to a load at the implement. The tilt sensor can provide data relating to an angular orientation of the chassis relative to a reference plane. The controller can receive data from the length sensor, the load sensor, and the tilt sensor. The controller can determine, based on the data from the load sensor and the tilt sensor, an operating envelope for the lift arm. The operating envelope can include a maximum extension of the lift arm. The controller can selectively limit an operation of the lift arm such that the lift arm operates within the operating envelope.Type: ApplicationFiled: February 20, 2023Publication date: August 24, 2023Applicant: Oshkosh CorporationInventors: Dale Tressler, Mark Neubauer, Prabhu Shankar, Michael Buhidar, Alex Dilello, Marcel Amsallen, Kurtis Thrush, Louis Bafile, Matthew Gilbride
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Patent number: 11691662Abstract: A steering system includes a first wheel and a second wheel spaced apart from the first wheel, a first tie rod, a second tie rod, and an electrical actuator. The first wheel is rotatably coupled to a first knuckle, and the first knuckle is pivotable about a first suspension post. The second wheel is rotatably coupled to a second knuckle, and the second knuckle is pivotable about a second suspension post spaced apart from the first suspension post. The first tie rod is coupled to the first knuckle and to a mechanical linkage. The second tie rod is coupled to the second knuckle and the mechanical linkage. The electrical actuator is coupled to the mechanical linkage so that movement of the electrical actuator translates the mechanical linkage axially, which adjusts the orientation of the wheels relative to the suspension posts.Type: GrantFiled: March 6, 2020Date of Patent: July 4, 2023Assignee: Oshkosh CorporationInventors: Jihong Hao, Derek Williams, Prabhu Shankar, Devin Rosencrance
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Publication number: 20230202552Abstract: A steering system includes a first wheel and a second wheel laterally spaced apart from the first wheel, and a third wheel and a fourth wheel laterally spaced apart from the third wheel. The first wheel is rotatably coupled to a first knuckle and the second wheel is rotatably coupled to a second knuckle. The third wheel and the fourth wheel are both pivotally fixed in a forward-aligned orientation. The steering system includes a first tie rod having a first end pivotally coupled to the first knuckle and a second end pivotally coupled to a mechanical linkage, a second tie rod having a first end pivotally coupled to the second knuckle and a second end pivotally coupled to the mechanical linkage, and an electrical actuator coupled to the mechanical linkage. The mechanical linkage is arranged in front of the electrical actuator relative to a travel direction.Type: ApplicationFiled: March 2, 2023Publication date: June 29, 2023Applicant: Oshkosh CorporationInventors: Derek WILLIAMS, Jihong HAO, Prabhu SHANKAR, Devin ROSENCRANCE
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Publication number: 20220371864Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.Type: ApplicationFiled: August 4, 2022Publication date: November 24, 2022Applicant: Oshkosh CorporationInventors: Prabhu Shankar, Louis Bafile, Jihong Hao, Eko Prasetiawan, Scott Riley, David Lombardo
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Patent number: 11492239Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.Type: GrantFiled: March 6, 2020Date of Patent: November 8, 2022Assignee: Oshkosh CorporationInventors: Prabhu Shankar, Louis Bafile, Jihong Hao, Eko Prasetiawan, Scott Riley, David Lombardo
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Publication number: 20210276841Abstract: A lift device includes a base including at least two rotatable wheels, a retractable lift assembly, and a coupler. The retractable lift assembly includes a first end coupled to the base and a second end that is movable relative to the base. The coupler is attached to the retractable lift assembly a distance from the first end and is configured to detachably couple the retractable lift assembly to an electro-mechanical device. The coupler includes a first flange, a second flange, a pair of diametrically opposed mounting studs, and a pin. Each one of the pair of mounting studs extends from a respective one of the first flange and the second flange. The pin extends through at least one of the first flange or the second flange below the pair of mounting studs.Type: ApplicationFiled: March 5, 2021Publication date: September 9, 2021Applicant: Oshkosh CorporationInventors: Janine Borofka, Peter Tan, Gregory S. Brulo, Jihong Hao, Prabhu Shankar
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Publication number: 20210279991Abstract: A method for providing access to an operator for a heavy equipment is shown. The method includes receiving equipment data and a first set of operator identification data from the operator, the operator identification data including an identify of the operator. The method includes verifying that the operator identification data can be registered with the equipment data. The method includes registering the identity of the operator with the equipment data such that the operator is registered to operate the heavy equipment. The method includes receiving a second set of operator identification data from the operator at a future time period. The method includes determining that the operator is permitted to operate the heavy equipment based on the second set of operator identification data comprising biometric data that is indicative of the identity of the operator.Type: ApplicationFiled: March 5, 2021Publication date: September 9, 2021Applicant: Oshkosh CorporationInventors: Prabhu Shankar, Shane Mastronardi, John Schrenk, David Lombardo, Matthew Gilbride
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Publication number: 20200317480Abstract: A fully electric lift device includes a base assembly, a lift assembly, a platform assembly, tractive elements, an energy storage device, and a control system. The lift assembly is coupled with the base assembly and is driven by an electric linear actuator for a lifting function. The platform assembly is positioned at a top of the lift assembly and can be raised or lowered as the lift assembly performs the lifting function. The tractive elements are rotatably coupled with the base assembly and can be driven by an electric wheel motor to perform a driving function. The control system includes a controller that operates the electric wheel motor and the electric linear actuator to perform the driving function and the lifting function using power drawn from the energy storage device. The lift assembly and the tractive elements use only electrical energy to perform the lifting and driving functions.Type: ApplicationFiled: March 6, 2020Publication date: October 8, 2020Applicant: Oshkosh CorporationInventors: Prabhu Shankar, Louis Bafile, Jihong Hao, Eko Prasetiawan, Scott Riley, David Lombardo
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Publication number: 20200317256Abstract: A steering system includes a first wheel and a second wheel spaced apart from the first wheel, a first tie rod, a second tie rod, and an electrical actuator. The first wheel is rotatably coupled to a first knuckle, and the first knuckle is pivotable about a first suspension post. The second wheel is rotatably coupled to a second knuckle, and the second knuckle is pivotable about a second suspension post spaced apart from the first suspension post. The first tie rod is coupled to the first knuckle and to a mechanical linkage. The second tie rod is coupled to the second knuckle and the mechanical linkage. The electrical actuator is coupled to the mechanical linkage so that movement of the electrical actuator translates the mechanical linkage axially, which adjusts the orientation of the wheels relative to the suspension posts.Type: ApplicationFiled: March 6, 2020Publication date: October 8, 2020Applicant: Oshkosh CorporationInventors: Jihong HAO, Derek WILLIAMS, Prabhu SHANKAR, Devin ROSENCRANCE
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Publication number: 20200317488Abstract: A fully-electric scissor lift comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a battery. The base has a plurality of wheels. The retractable lift mechanism has a first end coupled to the base and is moveable between an extended position and a retracted position. The work platform is configured to support a load. The work platform is coupled to and supported by a second end of the retractable lift mechanism. The linear actuator is configured to selectively move the retractable lift mechanism between the extended position and the retracted position. The linear actuator has an electric lift motor. The battery is configured to apply power to the electric lift motor. The fully-electric scissor lift is completely devoid of moving fluids.Type: ApplicationFiled: March 6, 2020Publication date: October 8, 2020Applicant: OSHKOSH CORPORATIONInventors: Louis BAFILE, Prabhu SHANKAR, Eko PRASETIAWAN, Jihong HAO, David LOMBARDO, Derek WILLIAMS, Brendan KOETLINGER, Paul ACURI
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Patent number: 8651156Abstract: The present invention provides an improved shear band for use in non-pneumatic tires, pneumatic tires, and other technologies. The improved shear band is uniquely constructed of honeycomb shaped units that can replace the elastomeric continuum materials such as natural or synthetic rubber or polyurethane that are typically used. In particular, honeycomb structures made of high modulus materials such as metals or polycarbonates are used that provide the desired shear strains and shear modulus when subjected to stress. When used in tire construction, improvements in rolling resistance can be obtained because of less mass being deformed and reduced hysteresis provided by these materials. The resulting mass of the shear band is greatly reduced if using low density materials. Higher density materials can be used (such as metals) without increasing mass while utilizing their characteristic low energy loss.Type: GrantFiled: June 18, 2010Date of Patent: February 18, 2014Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Georges M. Fadel, Jaehyung Ju, Ashwin Michaelraj, Prabhu Shankar, Joshua D. Summers, John C. Ziegert
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Publication number: 20110030866Abstract: The present invention provides an improved shear band for use in non-pneumatic tires, pneumatic tires, and other technologies. The improved shear band is uniquely constructed of honeycomb shaped units that can replace the elastomeric continuum materials such as natural or synthetic rubber or polyurethane that are typically used. In particular, honeycomb structures made of high modulus materials such as metals or polycarbonates are used that provide the desired shear strains and shear modulus when subjected to stress. When used in tire construction, improvements in rolling resistance can be obtained because of less mass being deformed and reduced hysteresis provided by these materials. The resulting mass of the shear band is greatly reduced if using low density materials. Higher density materials can be used (such as metals) without increasing mass while utilizing their characteristic low energy loss.Type: ApplicationFiled: June 18, 2010Publication date: February 10, 2011Inventors: Georges M. FADEL, Jaehyung Ju, Ashwin Michaelraj, Prabhu Shankar, Joshua D. Summers, John C. Ziegert
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Publication number: 20020077934Abstract: A network-based method for configuring terminal blocks includes receiving terminal block information from a user and using a server to compare the received specification information with pre-stored information. The method also includes selecting at least one terminal block that matches the received specification information and displaying to the user information related to the terminal block. A network-based method also provides for selection of various accessories for the selected terminal block.Type: ApplicationFiled: December 15, 2000Publication date: June 20, 2002Inventors: Prabhu Shankar Pichai, Loknath Esety Patro, Kirk Schirra, Michael A. Motley