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Breakaway Fishing Weight for Flyback Mitigation

Shell encasing sinker breaks apart when triggered upon flyback Background Under tension, fishing lines can break or recoil, and weights and swivels can then fly back at fishermen creating serious safety risks. A research team at the University of Hawaii’s Department of Mechanical Engineering designed a breakaway sinker for the long line fishing...

Published: 10/24/2024 | Inventor(s): Matthew Nakamura, Joseph Brown, Jacob Grogget, Kailer Okura, Kaitlyn Matsunaga, Corrisa Heyes

Keywords(s):

Category(s): Agriculture/Aquaculture, Engineering

A cascading, dual-frame, motion-tracking estimator for velocity-denied mobile robots

Cascading, Dual-Frame, Motion-Tracking Estimator for Velocity-Denied Mobile RobotsA novel state estimation algorithm to estimate position and velocity of any dynamic in motion using only a low-cost GNSS and IMU sensor.Case ID20/0031BackgroundTo traverse an environment, autonomous mobile robots require a robust navigation system that computes the position...

Published: 6/28/2022 | Inventor(s): Brennan Yamamoto, A. Zachary Trimble

Keywords(s):

Category(s): Engineering, Environmental Sciences, Energy, Ocean Sciences, Transportation

Membraneless Method for Electricity Generation from Salinity Gradients

Membraneless Method for Generating Electricity from Salinity GradientsCase ID19/0041BackgroundThe blue energy, i.e. the Gibbs energy from mixing seawater and river water, is a promising source of clean energy. Pressure-retarded osmosis (PRO) and reverse electrodialysis (RED) are by far the most successful methods for extracting such energy, although...

Published: 10/6/2023 | Inventor(s): Tianwei (david) Ma, Jian (Jimmy) Yu

Keywords(s): Energy

Category(s): Energy, Engineering, Environmental Sciences

Low-Cost Method for Determining the Surface Free Energy of Micro-particles and Nanoparticles

Low-Cost Method for Determining the Surface Free Energy of Micro-particles and NanoparticlesCase ID:19/0027BackgroundSurface free energy (SFE) of micro- and nanoparticles plays a crucial role in determining the hydrophobicity and wettability of the particles. To date, however, there are no easy-to-use methods for determining the SFE of particles.Technology...

Published: 6/9/2020 | Inventor(s): Yi Zuo

Keywords(s):

Category(s): Materials Science, Engineering, Physics

Ambient Energy Harvesting Device with Charge-Carrying Movable Electrode

Ambient Energy Harvesting Device with Charge-Carrying Movable ElectrodeCase ID:01120Background Advances in low-power electronics and distributed systems have generated interest in small-scale power supply systems that harness energy from ambient sources. Low-power and distributed systems have also added to the portability of electronic devices, lessened...

Published: 10/6/2023 | Inventor(s): Tianwei (david) Ma, Enze Ma, Jian (Jimmy) Yu

Keywords(s):

Category(s): Energy, Engineering, Environmental Sciences

Dynamic Reactive Compensation

Dynamic Reactive Compensation The voltage profile of distribution feeders in the traditional power system is illustrated in Figure 1 where the red series represents the primary feeder voltage and the red points as the customer service voltage. The voltage starts out high at the beginning of the feeder (substation transformer) and drops as power flows...

Published: 5/8/2024 | Inventor(s): Leon Roose, Staci Sadoyama, Hsun Jou, Marc Matsuura

Keywords(s): Energy, Energy:Conservation Voltage Reduction, Energy:Voltage Optimization, Engineering, Engineering:Voltage Regulation

Category(s): Engineering, Energy

The ZOG Method: True Printed Circuit Boards

A novel way to fabricate printed circuit boards without the need of expensive equipment or toxic chemicals. The circuit board is printed using a 3D printer and liquid metal is used for the circuit traces. Circuits are packaged with plastic and sealed by default. Multilayer PCBs can also be fabricated without the need of a multi-ton press. This method...

Published: 7/20/2022 | Inventor(s): David Garmire, Jie Zhou, Tamra Oyama

Keywords(s):

Category(s): Engineering

Distribution Grid Power Monitor

DescriptionA powerful platform for high-resolution data acquisition from distribution service transformers, with the potential to control DERS (distributed energy resources)BackgroundIn order to improve the resiliency of the electric grid and support increasing demand for distributed photovoltaics (PV), utilities are seeking to establish greater real‑time...

Published: 2/10/2022 | Inventor(s): Kevin Davies, Thai Tran, Saeed Sepasi, Leon Roose

Keywords(s): Energy:Grid, Energy:Solar, Energy:Volt/Var Optimization, Energy:Voltage Optimization, Engineering:Electrical, Engineering:Voltage Regulation, Real-time analysis, Utility

Category(s): Engineering, Energy

Environmental Sensor Array

Environmental Sensor ArrayDesigned to expand the capabilities of fuel cellsRef. UH-1045 BackgroundIntegrating fuel cell technology into transportation has the potential to reduce dependency on fossil fuels, reduce global warming emissions and improve air quality for the majority of urban citizens. However, air quality presents a challenge to reliable...

Published: 11/22/2021 | Inventor(s): Scott Higgins, James (Mitch) Ewan

Keywords(s):

Category(s): Engineering, Energy

Polymer Matrix Composites with Nano-Scale Reinforcements

BackgroundEver since the commercial introduction of thermoset polymers, such as epoxy resins, as matrix materials for advanced composites, signiﬁcant efforts have been undertaken to improve their ductility to delay crack initiations and their growths, and, in turn, to delay delamination and fracture. Efforts include the dispersion of rubber particles...

Published: 11/19/2021 | Inventor(s): Mehrdad Nejhad, Vinod Veedu

Keywords(s):

Category(s): Engineering, Nanotechnology

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