Marine propulsion unit and marine vessel
US12428121B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Oct 11, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2023/245
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A marine propulsion unit includes a stern drive mounted to a transom. The stern drive comprises an upper unit enclosed in a stern drive housing and a lower unit enclosed in a gearbox housing; wherein the gearbox housing contains a gearbox arranged to drive at least one propeller. The propulsion unit further comprises at least two electric motors arranged in the stern drive housing, which electric motors are mounted with vertical output shafts; a planetary gear set arranged between the at least two electric motors and the gearbox, and a vertical shaft that is attached to a ring gear of the planetary gear set at its upper end and is connected to the gearbox at its lower end; wherein the output shaft of each electric motor is connected to a planetary gear arranged in the planetary gear set to drive the ring gear and the vertical shaft connected to the gearbox.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.