Patents by Inventor Eko A. Prasetiawan
Eko A. Prasetiawan 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: 20210276848Abstract: A lift device includes a lift apparatus and a base assembly. The lift apparatus is configured to raise and lower an implement assembly. The base assembly is configured to support the lift apparatus. The base assembly includes a deployable operator station transitionable between a deployed position and a stowed position. In the deployed position, the deployable operator station is configured to provide a seating and control arrangement for an operator. In the stowed position, the deployable operator station is substantially sealed from an external environment to limit access to the deployable operator station.Type: ApplicationFiled: March 5, 2021Publication date: September 9, 2021Applicant: Oshkosh CorporationInventors: Wenton S. Miller, Matthew Gilbride, Shane Mastronardi, Eko Prasetiawan, Ignacy Puszkiewicz
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Publication number: 20210276850Abstract: A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a lift controller. 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 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 comprises a central screw rod, an electric motor configured to provide rotational actuation to the central screw rod, and a nut assembly configured to translate the rotational actuation of the central screw rod into linear motion. The lift controller is configured to receive a lift command from an operator, monitor at least one lift characteristic associated with the linear actuator, and selectively inhibit the lift command.Type: ApplicationFiled: May 24, 2021Publication date: September 9, 2021Applicant: Oshkosh CorporationInventors: David Lombardo, Eko Prasetiawan, Louis Bafile
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Publication number: 20200317493Abstract: A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a lift controller. 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 lift controller is configured to monitor at least one lift characteristic associated with the linear actuator and to determine whether an actuator failure has been detected based on the at least one lift characteristic associated with the linear actuator.Type: ApplicationFiled: March 6, 2020Publication date: October 8, 2020Applicant: Oshkosh CorporationInventors: David Lombardo, Eko Prasetiawan, Louis Bafile
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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: 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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Publication number: 20200317494Abstract: A lift device comprises a base, a retractable lift mechanism, a work platform, a linear actuator, and a descent control mechanism. 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 motor. The descent control mechanism is configured to reduce a speed at which the retractable lift mechanism is moved from the extended position to the retracted position.Type: ApplicationFiled: March 6, 2020Publication date: October 8, 2020Applicant: Oshkosh CorporationInventors: Louis BAFILE, Eko PRASETIAWAN
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Patent number: 8041485Abstract: A machine is provided. The machine includes a body, an engine, a transmission, a seat assembly, an electronic control module, a first transmission controller, and a second transmission controller. The engine is mounted within the body and powers the machine. The transmission is coupled to the engine. The seat assembly is rotatably mounted to the body and moveable between a first position and a second position. The electronic control module is in electrical communication with the engine and the seat assembly. The first transmission controller is in electrical communication with the electronic control module and operable to control the transmission with a first transmission command. The second transmission controller is in electrical communication with the electronic control module and operable to control the transmission a second transmission command when the seat assembly is in the first position and the first transmission command is neutral.Type: GrantFiled: December 31, 2007Date of Patent: October 18, 2011Assignee: Caterpillar Inc.Inventors: Eko A. Prasetiawan, Satyaki Guha
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Publication number: 20100043418Abstract: A hydraulic system is disclosed having at least two hydraulic circuits. The disclosed system compares pressures between the hydraulic circuits and alters valve commands of the circuit associated with higher pressures in order to reduce overall system pressure.Type: ApplicationFiled: October 8, 2009Publication date: February 25, 2010Applicant: Caterpillar Inc.Inventors: Michael T. Verkuilen, Eko A. Prasetiawan, Jeffrey L. Kuehn, Shoji Tozawa, Srinivas Kowta
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Patent number: 7614336Abstract: A hydraulic system is disclosed having a source of pressurized fluid, at least a one hydraulic actuator, and a first valve. The first valve has a first valve element movable relative to a first valve bore between a plurality of positions from a first position in which pressurized fluid is substantially blocked from flowing toward the at least one hydraulic actuator to a second position in which pressurized fluid is allowed to flow toward the at least one hydraulic actuator. The first valve element is configured to be selectively moved from a third position located between the first and second positions to a fourth position located between the third and second positions at least partially based on a pressure signal of pressurized fluid downstream of the first valve.Type: GrantFiled: September 30, 2005Date of Patent: November 10, 2009Assignees: Caterpillar Inc., Shin Caterpillar Mitsubishi LtdInventors: Michael Todd VerKuilen, Jeffrey Lee Kuehn, Srinivas Kowta, Eko A. Prasetiawan, Shoji Tozawa
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Publication number: 20090018745Abstract: A machine is provided. The machine includes a body, an engine, a seat assembly, an electronic control module, a first throttle, and a second throttle. The engine is mounted within the body and powers the machine. The seat assembly is rotatably mounted to the body and moveable between a first position and a second position. The electronic control module is in electrical communication with the engine and the seat assembly. The first throttle is in electrical communication with the electronic control module and operable to control engine speed with a first throttle command when the seat assembly is in the first position. The second throttle is in electrical communication with the electronic control module and operable to control engine speed with a second throttle command when the seat assembly is in the second position and the second throttle command is greater than the first throttle command.Type: ApplicationFiled: December 31, 2007Publication date: January 15, 2009Applicant: CATERPILLAR INCInventors: Eko A. Prasetiawan, Satyaki Guha
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Publication number: 20090012679Abstract: A machine is provided. The machine includes a body, an engine, a transmission, a seat assembly, an electronic control module, a first transmission controller, and a second transmission controller. The engine is mounted within the body and powers the machine. The transmission is coupled to the engine. The seat assembly is rotatably mounted to the body and moveable between a first position and a second position. The electronic control module is in electrical communication with the engine and the seat assembly. The first transmission controller is in electrical communication with the electronic control module and operable to control the transmission with a first transmission command. The second transmission controller is in electrical communication with the electronic control module and operable to control the transmission a second transmission command when the seat assembly is in the first position and the first transmission command is neutral.Type: ApplicationFiled: December 31, 2007Publication date: January 8, 2009Applicant: CATERPILLAR INCInventors: Eko A. Prasetiawan, Satyaki Guha
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Publication number: 20070074510Abstract: A hydraulic system is disclosed having a source of pressurized fluid, at least a one hydraulic actuator, and a first valve. The first valve has a first valve element movable relative to a first valve bore between a plurality of positions from a first position in which pressurized fluid is substantially blocked from flowing toward the at least one hydraulic actuator to a second position in which pressurized fluid is allowed to flow toward the at least one hydraulic actuator. The first valve element is configured to be selectively moved from a third position located between the first and second positions to a fourth position located between the third and second positions at least partially based on a pressure signal of pressurized fluid downstream of the first valve.Type: ApplicationFiled: September 30, 2005Publication date: April 5, 2007Inventors: Michael VerKuilen, Jeffrey Kuehn, Srinivas Kowta, Eko Prasetiawan, Shoji Tozawa