Switching rocker arm
US-10132204-B2 · Nov 20, 2018 · US
Adjusting or compensating clearance
Adjusting or compensating clearance · 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 | F01L1/20 |
| Official title | Adjusting or compensating clearance |
| Display label | Adjusting or compensating clearance |
| Total patents | 244 |
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 | 20 |
| 2017 | 30 |
| 2018 | 27 |
| 2019 | 38 |
| 2020 | 34 |
| 2021 | 31 |
| 2022 | 25 |
| 2023 | 11 |
| 2024 | 16 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Lash adjuster and method of making same
US-10094248-B2 · Oct 9, 2018 · US
Internal combustion engine and method of assembling thereof
US-2018283239-A1 · Oct 4, 2018 · US
Variable valve lift apparatus
US-2018163578-A1 · Jun 14, 2018 · US
Valve switching apparatus
US-9840949-B2 · Dec 12, 2017 · US
Internal combustion engine
US-9822672-B2 · Nov 21, 2017 · US
Valve opening and closing apparatus
US-9822675-B2 · Nov 21, 2017 · US
Rocker base for valve actuation system
US-9816405-B2 · Nov 14, 2017 · US
Switching rocker arm
US-2017306809-A1 · Oct 26, 2017 · US
Variable valve drive having a rocker lever
US-2017298786-A1 · Oct 19, 2017 · US
Lost motion valve actuation systems with locking elements including wedge locking elements
US-9790824-B2 · Oct 17, 2017 · US
Rocker arm and method of manufacturing the same
US-2017284232-A1 · Oct 5, 2017 · US
Switchable rocker arm with reduced coupling assembly loads
US-2017284313-A1 · Oct 5, 2017 · US
Distributed load bearing with an inner flex ring
US-9746034-B2 · Aug 29, 2017 · US
Motor vehicle drivetrain controller
US-2017241306-A1 · Aug 24, 2017 · US
Hydraulic lash adjuster and method for using hydraulic lash adjuster
US-2017218796-A1 · Aug 3, 2017 · US
Internal combustion engine air charge control
US-2017218866-A1 · Aug 3, 2017 · US
System comprising an accumulator upstream of a lost motion component in a valve bridge
US-9702276-B2 · Jul 11, 2017 · US
Latching solenoid for engine management
US-2017191385-A1 · Jul 6, 2017 · US
Variable valve lift apparatus
US-9689282-B2 · Jun 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/20?
- CPC F01L1/20 is the Cooperative Patent Classification code for “Adjusting or compensating clearance.”
- How many patents are filed under CPC F01L1/20 (Adjusting or compensating clearance)?
- Our database includes 244 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/20 growing?
- Publication counts under this code: 16 in 2024 vs 6 in 2025 (latest complete years).