Hinge mechanism for a weight-shifting coaxial helicopter
US-2017320565-A1 · Nov 9, 2017 · US
Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43)
Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43) · 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 | B64C27/52 |
| Official title | Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43) |
| Display label | Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43) |
| Total patents | 479 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 18 |
| 2017 | 53 |
| 2018 | 32 |
| 2019 | 60 |
| 2020 | 72 |
| 2021 | 68 |
| 2022 | 51 |
| 2023 | 44 |
| 2024 | 32 |
| 2025 | 19 |
| 2026 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Power Safety Instrument System
US-2017307401-A1 · Oct 26, 2017 · US
Aircraft and method of orienting an airframe of an aircraft
US-2017308101-A1 · Oct 26, 2017 · US
Noise modes for rotary wing aircraft
US-2017305540-A1 · Oct 26, 2017 · US
Aircraft main rotor drag to airframe drag
US-2017297696-A1 · Oct 19, 2017 · US
Wind-Powered Recharging for a Weight-Shifting Coaxial Helicopter
US-2017284371-A1 · Oct 5, 2017 · US
Gearbox Lubrication System
US-2017284535-A1 · Oct 5, 2017 · US
Main rotor rotational speed control for rotorcraft
US-2017283047-A1 · Oct 5, 2017 · US
Dual rotor, rotary wing aircraft
US-2017274994-A1 · Sep 28, 2017 · US
Nose attitude control of a rotary wing aircraft
US-2017277201-A1 · Sep 28, 2017 · US
Gimbaled Tail Rotor Hub with Spherical Elastomeric Centrifugal Force Bearing for Blade Retention and Pitch Change Articulation
US-2017259913-A1 · Sep 14, 2017 · US
Lift offset control of a rotary wing aircraft
US-2017233068-A1 · Aug 17, 2017 · US
Servo-control and an aircraft having such a servo-control
US-9732769-B2 · Aug 15, 2017 · US
Rotorcraft operational altitude and airspeed
US-2017225775-A1 · Aug 10, 2017 · US
Aircraft design for air to air refueling
US-2017225797-A1 · Aug 10, 2017 · US
Dual rotor, rotary wing aircraft
US-2017217582-A1 · Aug 3, 2017 · US
Active vibration control of a rotorcraft
US-2017217575-A1 · Aug 3, 2017 · US
Blade indexing of a rotary wing aircraft
US-2017217581-A1 · Aug 3, 2017 · US
Vehicle configuration with motors that rotate between a lifting position and a thrusting position
US-2017101175-A1 · Apr 13, 2017 · US
Vehicle configuration with motors that rotate between a lifting position and a thrusting position
US-9561849-B2 · Feb 7, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B64C27/52?
- CPC B64C27/52 is the Cooperative Patent Classification code for “Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43).”
- How many patents are filed under CPC B64C27/52 (Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43))?
- Our database includes 479 publications tagged with this CPC code.
- Is patent activity under CPC B64C27/52 growing?
- Publication counts under this code: 32 in 2024 vs 19 in 2025 (latest complete years).