Oil flow through the bearings of a scroll compressor
US-10801495-B2 · Oct 13, 2020 · US
Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F04C29/0071 |
| Official title | {Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft} |
| Display label | Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft |
| Total patents | 130 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 6 |
| 2017 | 11 |
| 2018 | 11 |
| 2019 | 19 |
| 2020 | 11 |
| 2021 | 13 |
| 2022 | 11 |
| 2023 | 11 |
| 2024 | 11 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Compressor With Oldham Assembly
US-2019383289-A1 · Dec 19, 2019 · US
Scroll compressor
US-2019345941-A1 · Nov 14, 2019 · US
Compressor Having Bushing
US-2019345939-A1 · Nov 14, 2019 · US
Compressor having oldham's ring
US-2019345942-A1 · Nov 14, 2019 · US
Scroll compressor
US-2019345940-A1 · Nov 14, 2019 · US
Mechanical vacuum pump for a motor vehicle
US-10443599-B2 · Oct 15, 2019 · US
Scroll compressor
US-2019277289-A1 · Sep 12, 2019 · US
Vacuum pump sealing element
US-2019277282-A1 · Sep 12, 2019 · US
Co-rotating scroll compressor
US-2019277291-A1 · Sep 12, 2019 · US
Compressor with Oldham assembly
US-10400770-B2 · Sep 3, 2019 · US
Motor vehicle vacuum pump
US-2019226483-A1 · Jul 25, 2019 · US
Dry-compressing vacuum pump
US-2019186493-A1 · Jun 20, 2019 · US
Noise and vibration management for smoke evacuation system
US-2019162186-A1 · May 30, 2019 · US
Mud motor coupling system
US-10288065-B1 · May 14, 2019 · US
Scroll Compressor With Scroll Bolt Clamp Joint
US-2019128263-A1 · May 2, 2019 · US
Scroll-Type Fluid Machine and Method for Assembling Same
US-2019101115-A1 · Apr 4, 2019 · US
Automotive vacuum pump
US-2019093656-A1 · Mar 28, 2019 · US
Screw compressor
US-2019063438-A1 · Feb 28, 2019 · US
Screw compressor
US-10167868-B2 · Jan 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F04C29/0071?
- CPC F04C29/0071 is the Cooperative Patent Classification code for “Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft.”
- How many patents are filed under CPC F04C29/0071 (Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft)?
- Our database includes 130 publications tagged with this CPC code.
- Is patent activity under CPC F04C29/0071 growing?
- Publication counts under this code: 11 in 2024 vs 13 in 2025 (latest complete years).