Rotary Propellers TRIZ Cases
- Trolling Motor Propeller Shield with Vertical Fin and Arcuate Guard
An arcuate shield blocks air ingestion while a vertical fin resists water currents, enabling stable operation in shallow depths.
- Rim-Driven Rotor Segmentation for Marine Propulsion
Segmented conductive layers in a rim-driven rotor optimize starting torque while minimizing radial depth to prevent overheating.
- Quarter-twist Pedal Propeller Transmission Design
A quarter-twist pedal propeller uses synchronous wheels and a twisted belt to transmit power efficiently.
- Marine Drive Sound Blocking Member for Noise Reduction
A sound blocking member extends across internal and external gaps in a marine drive propulsion unit to block noise transmission.
- Modular Underwater Propeller with Detachable Adapter
A multifunctional underwater propeller features a detachable handle and adapter structure for connecting external equipment.
- Coaxial Marine Propeller Torque Boosting
A coaxial marine propeller device transfers rear rotor torque to the front shaft via a one-way support.
- Passive Hydrofoil Board via Weight Shift Control
A hydrofoil surfboard achieves passive stability and directional control through rider weight shift, eliminating movable surfaces.
- Cavitation Resistance via Liquid Pressurization
Pressurizing liquids near surfaces develops cavitation resistance through mechanical interlocking.
- Outboard Motor Vibration Isolation Mounts and Bump Stop
A bump stop located between the swivel bracket and drive unit limits deflection caused by high loads exceeding vibration mount thresholds.
- Elastic Hub Assemblies for Marine Propulsion Noise Reduction
Shear-deformed rubber sections in an elastic hub absorb clutch rattle and shift shock energy while maintaining torque transmission efficiency.
- Built-Up Propeller With Tapered Blade Roots
Tapered blade roots engage hub shoes to replace complex dovetail grooves, enabling repairable construction with improved force transmission.