Patent · US Active

Marine propulsion system

US10442516B2 · kind B2 · utility

2Cited by
19References
7Claims
0Family size

Inventor

Key dates

Filing dateJul 17, 2018
Grant dateOct 15, 2019
Priority date—
Expiry dateJul 17, 2038

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB63H2005/1256
  • WIPO fieldTransport
  • WIPO sectorMechanical engineering

Abstract

A marine propulsion system having a steering axis that allows pivoting of propellers along a first vertical axis directly beneath a gear box located inside the hull of a boat. A lower gear box can be placed within a vented or non-vented tunnel eliminating the need for a rudder and providing directional control of the boat by the orientation of the lower gear box. Surface piercing propellers and/or counter-rotating propellers may be used with the propellers pivoted around the vertical axis of the gear box. The offset steering axis allows pivoting around the first vertical axis wherein a secondary axis is moved with minimal drag providing superior maneuverability at both high and low speeds.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.