Drive device for activating a rotary slide
US-2021341072-A1 · Nov 4, 2021 · US
with crank, eccentric, or cam
with crank, eccentric, or cam · 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 | F16K31/52 |
| Official title | with crank, eccentric, or cam |
| Display label | with crank, eccentric, or cam |
| Total patents | 101 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 10 |
| 2017 | 8 |
| 2018 | 9 |
| 2019 | 8 |
| 2020 | 12 |
| 2021 | 9 |
| 2022 | 3 |
| 2023 | 14 |
| 2024 | 15 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for characterizing variable-air-volume (vav) valves for use in hvac systems
US-2021302053-A1 · Sep 30, 2021 · US
Recovery system for an inkjet type dispenser
US-2021245522-A1 · Aug 12, 2021 · US
Subsea shut-off device
US-11067197-B2 · Jul 20, 2021 · US
Rotary axial globe valve
US-10962122-B2 · Mar 30, 2021 · US
Force balanced reciprocating valve
US-2021003230-A1 · Jan 7, 2021 · US
Sealing valve installation structure and cleaning-free washing machine
US-2020399814-A1 · Dec 24, 2020 · US
Valve
US-2020388477-A1 · Dec 10, 2020 · US
Positive drive actuated valve for reciprocating compressor and method
US-10830231-B2 · Nov 10, 2020 · US
Universal fatigue valve system
US-2020300381-A1 · Sep 24, 2020 · US
Manufacture of actuators and control valve assemblies
US-2020292098-A1 · Sep 17, 2020 · US
Valve device and steam turbine
US-10774671-B2 · Sep 15, 2020 · US
Supporting arrangement for an eccentric member of an adjusting arrangement, and adjusting arrangement
US-10767572-B2 · Sep 8, 2020 · US
Pneumatic valve arrangement
US-10767665-B2 · Sep 8, 2020 · US
Manufacture of actuators and control valve assemblies
US-10704707-B2 · Jul 7, 2020 · US
Method for producing a unit consisting of eccentric rod and piston of a connecting rod of an internal combustion engine
US-10557408-B2 · Feb 11, 2020 · US
Rotary axial globe valve
US-2020011431-A1 · Jan 9, 2020 · US
Supporting arrangement for an eccentric member of an adjusting arrangement, and adjusting arrangement
US-2020003130-A1 · Jan 2, 2020 · US
Coolant control valve
US-10465593-B2 · Nov 5, 2019 · US
Dual inline valve with manual override
US-10458337-B2 · Oct 29, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16K31/52?
- CPC F16K31/52 is the Cooperative Patent Classification code for “with crank, eccentric, or cam.”
- How many patents are filed under CPC F16K31/52 (with crank, eccentric, or cam)?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC F16K31/52 growing?
- Publication counts under this code: 15 in 2024 vs 6 in 2025 (latest complete years).