Helicopter
US10661896B2 · kind B2 · utility
13Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 2015 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Jun 19, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A multicopter having a plurality of propellers is provided with electric motors, at least one main battery, a generator, and an engine. The electric motors drive the propellers. The main battery is a first electric power source that supplies the electric power to the electric motors. The generator is a second electric power source that supplies the electric power to the electric motors. The engine drives the generator. When a remaining capacity of the main battery is less than a threshold, the generator charges the main battery with the electric power that has been converted from motive power from the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.