Patents by Inventor Daniel J. Kaplan
Daniel J. Kaplan 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: 11970291Abstract: A toilet for a zero-gravity condition, having: a seat extending from a first end to a second end, and from a first side to a second side; a leg rest at the first end of the seat that is level with the seat; a backrest at the second end of the seat that extends away from the seat, toward an outer end of the toilet, a first sidewall at the first side of the seat and a second sidewall at the second side of the seat, the sidewalls extend away from the seat toward the outer end of the toilet; a basin extending away from the seat toward an inner end of the toilet; a first inflatable member extending about the leg rest, the sidewalls and the backrest, the first inflatable member is configured to inflate against a back, sides and under legs of a person seated against the seat.Type: GrantFiled: April 6, 2022Date of Patent: April 30, 2024Assignee: HAMILTON SUNDSTRAND SPACE SYSTEMS INTERNATIONAL, INC.Inventors: Ashley Himmelmann, Daniel J. Kaplan, Jake Rohrig, Rachel L LaDue
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Publication number: 20230322420Abstract: A toilet for a zero-gravity condition, having: a seat extending from a first end to a second end, and from a first side to a second side; a leg rest at the first end of the seat that is level with the seat; a backrest at the second end of the seat that extends away from the seat, toward an outer end of the toilet, a first sidewall at the first side of the seat and a second sidewall at the second side of the seat, the sidewalls extend away from the seat toward the outer end of the toilet; a basin extending away from the seat toward an inner end of the toilet; a first inflatable member extending about the leg rest, the sidewalls and the backrest, the first inflatable member is configured to inflate against a back, sides and under legs of a person seated against the seat.Type: ApplicationFiled: April 6, 2022Publication date: October 12, 2023Inventors: Ashley Himmelmann, Daniel J. Kaplan, Jake Rohrig, Rachel L. LaDue
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Patent number: 11465779Abstract: A predictive maintenance system is disclosed. The system includes a network of analog and digital sensors, each sensor configured for measuring telemetry data associated with temperature levels, voltage levels, current levels, and other analog or digital parameters. The system includes microprocessors for receiving the (digitized) analog and digital telemetry data, tabulating and timestamping the raw telemetry datasets. The microprocessors compress the raw data and reduce its dimensionality by generating principal component sets from the raw data based on scalar parameters corresponding to machine learning algorithms stored to memory, the principal component sets capturing a majority of variances within the raw data. The principal component sets are organized into data packets including identifiers for the relevant algorithms. The data packets are transmitted via real time networks for either onboard storage or ground-based analysis.Type: GrantFiled: August 14, 2019Date of Patent: October 11, 2022Assignee: Rockwell Collins, Inc.Inventors: Daniel J. Kaplan, Christopher A. Hohensee, Yeshani D. Wijesekara Gamachchige, Chadwick K. J. Harvey
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Patent number: 11284365Abstract: A system for time synchronization over redundant switch-based avionics networks is disclosed. The system includes a master or source clock for determining precise UTC timing information from received satellite signals and generating time marks based on the timing information. The source clock generates network-compatible timing messages and forwards the timing messages to network switches within the switch-based avionics networks. The network switches modify the timing information to account for switch-based delays and forward the modified timing messages to destination clocks in aircraft end systems. The end systems relay timing messages back to the source clock via the network switches, the timing information again modified by the network switches according to switch-based delays, and based on the precise timing information exchanged destination clocks in end systems throughout the switched network can precisely synchronize to the source clock.Type: GrantFiled: October 25, 2019Date of Patent: March 22, 2022Assignee: Rockwell Collins, Inc.Inventors: Daniel J. Kaplan, Yeshani D. WijesekaraGamachchige, Andrea P. Gonzalez, Christopher A. Hohensee, Angelo J. Joseph, Nels Waineo, Christopher Kistler, Jason R. Owen
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Publication number: 20210235405Abstract: A system for time synchronization over redundant switch-based avionics networks is disclosed. The system includes a master or source clock for determining precise UTC timing information from received satellite signals and generating time marks based on the timing information. The source clock generates network-compatible timing messages and forwards the timing messages to network switches within the switch-based avionics networks. The network switches modify the timing information to account for switch-based delays and forward the modified timing messages to destination clocks in aircraft end systems. The end systems relay timing messages back to the source clock via the network switches, the timing information again modified by the network switches according to switch-based delays, and based on the precise timing information exchanged destination clocks in end systems throughout the switched network can precisely synchronize to the source clock.Type: ApplicationFiled: October 25, 2019Publication date: July 29, 2021Inventors: Daniel J. Kaplan, Yeshani D. WijesekaraGamachchig, Andrea P. Gonzalez, Christopher A. Hohensee, Angelo J. Joseph, Nels Waineo, Christopher Kistler, Jason R. Owen
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Patent number: 11061066Abstract: A predictive maintenance system for an aircraft-based power converter subsystem (PCS) continuously measures primary system parameters such as input and output currents and voltages, ambient and PCS component temperatures, and hold-up capacitance voltage. The predictive maintenance system updates the likely failure rate of the PCS based on the primary parameters and secondary parameters (e.g., power consumption, power efficiency, thermal resistance, hold-up storage capacitance) derived therefrom. Sensed primary parameters and derived secondary parameters, as well as the updated failure rate, are stored to memory in order to monitor their time derivatives and regression over the PCS lifespan. Should the updated failure rate ever reach or exceed an acceptable failure rate threshold, the predictive maintenance system alerts the aircraft control system, end user, or provider to service the PCS in advance of an unanticipated field failure.Type: GrantFiled: July 31, 2018Date of Patent: July 13, 2021Assignee: Rockwell Collins, Inc.Inventors: Daniel J. Kaplan, Christopher A. Hohensee
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Publication number: 20210047056Abstract: A predictive maintenance system is disclosed. The system includes a network of analog and digital sensors, each sensor configured for measuring telemetry data associated with temperature levels, voltage levels, current levels, and other analog or digital parameters. The system includes microprocessors for receiving the (digitized) analog and digital telemetry data, tabulating and timestamping the raw telemetry datasets. The microprocessors compress the raw data and reduce its dimensionality by generating principal component sets from the raw data based on scalar parameters corresponding to machine learning algorithms stored to memory, the principal component sets capturing a majority of variances within the raw data. The principal component sets are organized into data packets including identifiers for the relevant algorithms. The data packets are transmitted via real time networks for either onboard storage or ground-based analysis.Type: ApplicationFiled: August 14, 2019Publication date: February 18, 2021Inventors: Daniel J. Kaplan, Christopher A. Hohensee, Yeshani D. Wijesekara Gamachchige, Chadwick K.J. Harvey
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Patent number: 10491100Abstract: A combined alternating current (AC) and direct current (DC) power converter is disclosed. In embodiments, the power converter includes an electromagnetic interference (EMI) filter, a bridge rectifier, and a boost converter. The EMI filter is configured to receive an electrical signal from a power source. The bridge rectifier is coupled to the EMI filter and includes at least four diodes arranged in a diode bridge configuration. The boost converter is coupled to the bridge rectifier and includes a switched DC path and a switched AC path. The switched DC path includes a DC transistor and the switched AC path includes an AC transistor. The switched AC path can also include one or more diodes and/or switching elements.Type: GrantFiled: July 31, 2018Date of Patent: November 26, 2019Assignee: Rockwell Collins, Inc.Inventors: James B. Mayfield, Daniel J. Kaplan, Jeffrey J. Deloy, Tristan J. Kendall
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Patent number: 8039993Abstract: Systems and methods for discharging a high-voltage bus coupled to a discharge circuit are provided. A method comprises obtaining a first voltage level of the high-voltage bus. The method further comprises determining a first discharge time based on the first voltage level and activating the discharge circuit. The method further comprises obtaining a second voltage level of the high-voltage bus after the first discharge time, comparing the first voltage level and the second voltage level, and deactivating the discharge circuit if a difference between the first voltage level and the second voltage level is less than a threshold value.Type: GrantFiled: April 24, 2008Date of Patent: October 18, 2011Assignee: GM Global Technology Operations LLCInventor: Daniel J. Kaplan
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Patent number: 7847256Abstract: A system is provided for detecting when an enclosure having a body and a removable cover is opened. The system comprises a light source for generating a light beam, a light detector for detecting the light beam, and at least one reflector all mounted inside the enclosure. The reflector reflects the light beam along a predetermined pathway toward the light detector when the removable cover is closed over the body.Type: GrantFiled: May 30, 2008Date of Patent: December 7, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Seok-Joo Jang, Terrence G. Ward, Daniel J. Kaplan, Brooks S. Mann, Louis Thompson
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Publication number: 20090294675Abstract: A system is provided for detecting when an enclosure having a body and a removable cover is opened. The system comprises a light source for generating a light beam, a light detector for detecting the light beam, and at least one reflector all mounted inside the enclosure. The reflector reflects the light beam along a predetermined pathway toward the light detector when the removable cover is closed over the body.Type: ApplicationFiled: May 30, 2008Publication date: December 3, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: SEOK-JOO JANG, TERENCE G. WARD, DANIEL J. KAPLAN, BROOKS S. MANN, LOUIS THOMPSON
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Publication number: 20090268354Abstract: Systems and methods for discharging a high-voltage bus coupled to a discharge circuit are provided. A method comprises obtaining a first voltage level of the high-voltage bus. The method further comprises determining a first discharge time based on the first voltage level and activating the discharge circuit. The method further comprises obtaining a second voltage level of the high-voltage bus after the first discharge time, comparing the first voltage level and the second voltage level, and deactivating the discharge circuit if a difference between the first voltage level and the second voltage level is less than a threshold value.Type: ApplicationFiled: April 24, 2008Publication date: October 29, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Daniel J. KAPLAN