Cam rocker lever for operating valves
US-2015377081-A1 · Dec 31, 2015 · US
Mechanical Engineering
Mechanical Engineering · 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 | F01L1/047 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 1,478 |
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 | 78 |
| 2016 | 139 |
| 2017 | 259 |
| 2018 | 237 |
| 2019 | 231 |
| 2020 | 181 |
| 2021 | 137 |
| 2022 | 97 |
| 2023 | 51 |
| 2024 | 41 |
| 2025 | 20 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Camshaft and associated cam
US-9222374-B2 · Dec 29, 2015 · US
Variable valve actuation apparatus, system, and method
US-9222375-B2 · Dec 29, 2015 · US
A device for effecting an axial shift of a rotary shaft for use in a variable camshaft drive mechanism
US-2015369089-A1 · Dec 24, 2015 · US
Bi-directional control groove design for engine rotation reversal on engine with sliding camshaft
US-9217340-B2 · Dec 22, 2015 · US
Apparatus for assembling a composite arrangement
US-2015360331-A1 · Dec 17, 2015 · US
Valve operating system for internal combustion engine
US-9212574-B2 · Dec 15, 2015 · US
Camshaft phaser actuated by an electric motor
US-2015354415-A1 · Dec 10, 2015 · US
Method for assembling a camshaft
US-2015343576-A1 · Dec 3, 2015 · US
Camshaft and functional elements for a camshaft
US-9200544-B2 · Dec 1, 2015 · US
Camshaft adjuster
US-2015337693-A1 · Nov 26, 2015 · US
Variable valve device
US-2015330266-A1 · Nov 19, 2015 · US
Valve train layout structure including return spring and camshaft-in-camshaft
US-2015285107-A1 · Oct 8, 2015 · US
Tube shaft with integrated oil separator
US-9151186-B2 · Oct 6, 2015 · US
Multiple variable valve lift apparatus
US-9140147-B2 · Sep 22, 2015 · US
Valve gear
US-9140151-B2 · Sep 22, 2015 · US
Cylinder Head Device for an Internal Combustion Engine and Internal Combustion Engine Having Such A Cylinder Head Device
US-2015260122-A1 · Sep 17, 2015 · US
Valve timing control device and method of assembly thereof
US-2015247429-A1 · Sep 3, 2015 · US
Bi-directional control groove design for engine rotation reversal on engine with sliding camshaft
US-2015233272-A1 · Aug 20, 2015 · US
Method of inspecting worn surfaces of camshaft lobes
US-2015226639-A1 · Aug 13, 2015 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/047?
- CPC F01L1/047 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F01L1/047 (Mechanical Engineering)?
- Our database includes 1,478 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/047 growing?
- Publication counts under this code: 41 in 2024 vs 20 in 2025 (latest complete years).