Valve drive for an internal combustion engine
US-10428702-B2 · Oct 1, 2019 · US
automatically, e.g. mechanically
automatically, e.g. mechanically · 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 | F01L1/22 |
| Official title | automatically, e.g. mechanically |
| Display label | automatically, e.g. mechanically |
| Total patents | 133 |
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 | 6 |
| 2016 | 12 |
| 2017 | 20 |
| 2018 | 16 |
| 2019 | 20 |
| 2020 | 15 |
| 2021 | 13 |
| 2022 | 12 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve train for an internal combustion engine
US-10329963-B2 · Jun 25, 2019 · US
Electromechanical valve lash adjuster
US-10316709-B2 · Jun 11, 2019 · US
Variable valve mechanism of internal combustion engine
US-10233790-B2 · Mar 19, 2019 · US
Rotatable body valve stem contact for switchable roller finger follower
US-2019032765-A1 · Jan 31, 2019 · US
Variable valve mechanism of internal combustion engine
US-10167745-B2 · Jan 1, 2019 · US
Continuous variable valve duration apparatus and engine provided with the continuous variable valve duration apparatus
US-10138764-B2 · Nov 27, 2018 · US
Common rocker arm for hydraulic lash adjuster and non-hydraulic lash adjuster
US-2018334930-A1 · Nov 22, 2018 · US
Common rocker arm for hydraulic lash adjuster and non-hydraulic lash adjuster
US-10132206-B1 · Nov 20, 2018 · US
Adjusting device for a valve clearance of a charge-cycle valve and methods for adjusting a valve clearance of a charge-cycle valve
US-10132205-B2 · Nov 20, 2018 · US
Rocker arm with integrated gear train
US-10094249-B1 · Oct 9, 2018 · US
Valve drive for an internal combustion engine
US-2018274403-A1 · Sep 27, 2018 · US
Valve drive for an internal combustion engine
US-2018274404-A1 · Sep 27, 2018 · US
Rocker arm with integrated gear train
US-2018266282-A1 · Sep 20, 2018 · US
Continuous variable valve lift system and car
US-2018230863-A1 · Aug 16, 2018 · US
Power unit having cam chain tensioner pivot mechanism
US-10006523-B2 · Jun 26, 2018 · US
Sliding Contact For Electrically Actuated Rocker Arm
US-2018142583-A1 · May 24, 2018 · US
Camshaft adjuster
US-9970334-B2 · May 15, 2018 · US
Latch interface for a valve actuating device
US-9915180-B2 · Mar 13, 2018 · US
Overhead valve actuation mechanism for engine
US-2018058270-A1 · Mar 1, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/22?
- CPC F01L1/22 is the Cooperative Patent Classification code for “automatically, e.g. mechanically.”
- How many patents are filed under CPC F01L1/22 (automatically, e.g. mechanically)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/22 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).