Teetering rotor yoke with pitched arms
US-12473084-B1 · Nov 18, 2025 · US
see-saw type, i.e. two-bladed rotor
see-saw type, i.e. two-bladed rotor · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B64C27/43 |
| Official title | see-saw type, i.e. two-bladed rotor |
| Display label | see-saw type, i.e. two-bladed rotor |
| Total patents | 28 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 4 |
| 2019 | 4 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Propulsor assembly of an electric aircraft
US-12312066-B2 · May 27, 2025 · US
Propulsor assembly of an electric aircraft
US-2024326983-A1 · Oct 3, 2024 · US
Single-blade aircraft rotor
US-11987347-B2 · May 21, 2024 · US
Combined cyclic and teeter system for an evtol aircraft
US-2024067330-A1 · Feb 29, 2024 · US
Teeter flap lock
US-11891167-B2 · Feb 6, 2024 · US
Teetering propulsor assembly of an electric vertical takeoff and landing aircraft
US-2023415885-A1 · Dec 28, 2023 · US
Systems and devices for parking a propulsor teeter
US-2023382524-A1 · Nov 30, 2023 · US
Spring-integrated rotors
US-11814161-B2 · Nov 14, 2023 · US
Light-weight, elastic teeter bearing for a rotor and aircraft housing such bearing
US-11673659-B2 · Jun 13, 2023 · US
Teetering propulsor assembly of an electric vertical takeoff and landing aircraft
US-11643196-B1 · May 9, 2023 · US
Teeter flap lock
US-2023118750-A1 · Apr 20, 2023 · US
Spring-integrated rotors
US-2023012688-A1 · Jan 19, 2023 · US
Single-blade aircraft rotor
US-2022388641-A1 · Dec 8, 2022 · US
Light-weight, elastic teeter bearing for a rotor and aircraft housing such bearing
US-2022153407-A1 · May 19, 2022 · US
Propeller arrangement for an aircraft
US-11104415-B2 · Aug 31, 2021 · US
Teetering rotor hub system
US-10501175-B2 · Dec 10, 2019 · US
Propeller assembly with at least two propeller blades
US-10486794-B2 · Nov 26, 2019 · US
Axial springs for rotor hub assembly
US-10308356-B2 · Jun 4, 2019 · US
Propeller Arrangement For An Aircraft
US-2019031318-A1 · Jan 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/43?
- CPC B64C27/43 is the Cooperative Patent Classification code for “see-saw type, i.e. two-bladed rotor.”
- How many patents are filed under CPC B64C27/43 (see-saw type, i.e. two-bladed rotor)?
- Our database includes 28 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/43 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).