Valve opening-closing timing control device
US-2025297560-A1 · Sep 25, 2025 · US
using helically teethed sleeve or gear moving axially between crankshaft and camshaft
using helically teethed sleeve or gear moving axially between crankshaft and camshaft · 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 | F01L1/34403 |
| Official title | {using helically teethed sleeve or gear moving axially between crankshaft and camshaft} |
| Display label | using helically teethed sleeve or gear moving axially between crankshaft and camshaft |
| Total patents | 59 |
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 | 3 |
| 2016 | 10 |
| 2017 | 8 |
| 2018 | 9 |
| 2019 | 11 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve timing changing device
US-2024392706-A1 · Nov 28, 2024 · US
Systems and methods for backlash compensation in cam phasing systems
US-12012877-B2 · Jun 18, 2024 · US
Systems and Methods for Backlash Compensation in Cam Phasing Systems
US-2023243281-A1 · Aug 3, 2023 · US
Cam Phase Actuator Control Systems and Methods
US-2023050408-A1 · Feb 16, 2023 · US
Valve timing control unit
US-11549407-B2 · Jan 10, 2023 · US
Valve timing control unit
US-2022325643-A1 · Oct 13, 2022 · US
Mechanical cam phasing systems and methods
US-11352916-B2 · Jun 7, 2022 · US
Cranktrain phase adjuster for variable compression ratio
US-2021396174-A1 · Dec 23, 2021 · US
Mechanical Cam Phasing Systems and Methods
US-2021148256-A1 · May 20, 2021 · US
Mechanical cam phasing systems and methods
US-10900387-B2 · Jan 26, 2021 · US
Cam phasing systems and methods
US-10865665-B2 · Dec 15, 2020 · US
Mechanical cam phasing systems and methods
US-10711657-B2 · Jul 14, 2020 · US
Mechanical cam phasing systems and methods
US-2020182106-A1 · Jun 11, 2020 · US
Cam phasing systems and methods
US-2020173316-A1 · Jun 4, 2020 · US
Variable valve timing control device
US-10655509-B2 · May 19, 2020 · US
Engine variable camshaft timing phaser with planetary gear assembly
US-10557385-B2 · Feb 11, 2020 · US
Cam phasing systems and methods
US-10557383-B2 · Feb 11, 2020 · US
EPhaser cushion stop
US-10514068-B2 · Dec 24, 2019 · US
Continuously variable valve timing apparatus and engine provided with the same
US-10480358-B2 · Nov 19, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/34403?
- CPC F01L1/34403 is the Cooperative Patent Classification code for “using helically teethed sleeve or gear moving axially between crankshaft and camshaft.”
- How many patents are filed under CPC F01L1/34403 (using helically teethed sleeve or gear moving axially between crankshaft and camshaft)?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/34403 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).