Valve switching apparatus
US-9840949-B2 · Dec 12, 2017 · US
Push-rods
Push-rods · 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 | F01L1/146 |
| Official title | {Push-rods} |
| Display label | Push-rods |
| Total patents | 295 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 19 |
| 2016 | 26 |
| 2017 | 39 |
| 2018 | 31 |
| 2019 | 35 |
| 2020 | 38 |
| 2021 | 35 |
| 2022 | 22 |
| 2023 | 18 |
| 2024 | 12 |
| 2025 | 16 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Valve lift assembly for a cam-in-block engine
US-2017298791-A1 · Oct 19, 2017 · US
Mechanical system forming a cam follower or a rocker arm, injection pump or valve actuator comprising such a mechanical system and method for manufacturing such a mechanical system
US-9790818-B2 · Oct 17, 2017 · US
A method of controlling an operation of an inlet valve system and an inlet valve control system
US-2017268434-A1 · Sep 21, 2017 · US
Piston assembly retainer with integrated spring seat
US-9745874-B2 · Aug 29, 2017 · US
Internal combustion engine which may be selectively operated by the two-stroke method or the four-stroke method and method for operating such an internal combustion engine
US-9732682-B2 · Aug 15, 2017 · US
Latching solenoid for engine management
US-2017191385-A1 · Jul 6, 2017 · US
Valvetrain for an engine
US-9638073-B2 · May 2, 2017 · US
Roller tappet for a reciprocating-piston combustion engine
US-9638072-B2 · May 2, 2017 · US
Rocker base for valve actuation system
US-2017089224-A1 · Mar 30, 2017 · US
Valve actuation system
US-2017089223-A1 · Mar 30, 2017 · US
Anti-Rotation Device For Lifter
US-2017074125-A1 · Mar 16, 2017 · US
Lifter
US-2017051637-A1 · Feb 23, 2017 · US
Fuel pump tappet assembly
US-9567960-B2 · Feb 14, 2017 · US
Translating roller lifter design for diesel engines
US-9556754-B2 · Jan 31, 2017 · US
Valvetrain for an Engine
US-2016376935-A1 · Dec 29, 2016 · US
Valve switching apparatus
US-2016348541-A1 · Dec 1, 2016 · US
Variable valve actuator
US-9506382-B2 · Nov 29, 2016 · US
Engine valve lifter oil flow control and anti-rotation feature
US-2016319708-A1 · Nov 3, 2016 · US
Valve lifter
US-2016312664-A1 · Oct 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F01L1/146?
- CPC F01L1/146 is the Cooperative Patent Classification code for “Push-rods.”
- How many patents are filed under CPC F01L1/146 (Push-rods)?
- Our database includes 295 publications tagged with this CPC code.
- Is patent activity under CPC F01L1/146 growing?
- Publication counts under this code: 12 in 2024 vs 16 in 2025 (latest complete years).