Overview
This patent describes a compact, adjustable wake‑modification system for recreational watercraft that uses a two-part surf tab assembly to shape stern wakes with precision. Filed December 22, 2015 and granted January 24, 2017, the claim set protects a control plate assembly coupled to a hydro‑thruster module via a separation hinge, an adjustable control‑rod, and actuator‑driven mounting hinges. Inventors based in Wichita Falls, Texas sought an arrangement that routes hull flow into a wedge‑shaped hydro‑thruster and diversion fins to expel water rearward and outward, producing a clean, bubble‑free wake while minimizing drag. The drafting emphasizes practical construction—welded aluminum plates, piano‑type hinges, an adjustable turnbuckle‑style rod for fine hydro‑thruster angle control, and electrically driven linear actuators for in‑ride tuning and stowability. The prosecution highlights how coordinated positioning of separation fins, setup fins, and diversion fins can create low‑pressure voids to lift and flatten the stern, improving propulsive efficiency and enabling repeatable wakes for watersports.
Key Features
- Adjustable control rod (turnbuckle style) for precise hydro‑thruster angle
- Separation hinge and piano‑type mounting hinge for dual articulation
- Wedge hydro‑thruster with diversion fins directing flow outward
- Electric linear actuators for remote adjustment and stowability
By combining mechanical simplicity with tuned hydrodynamics, this patented solution advances aftermarket wake control and offers clear benefits for small craft performance, rider experience, and fuel efficiency in the recreational marine market.
Granted: 2017-01-24
