Self-Lubricating Connector
US-2026034578-A1 · Feb 5, 2026 · US
Spring-loaded devices
Spring-loaded devices · 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 | F16N11/04 |
| Official title | Spring-loaded devices |
| Display label | Spring-loaded devices |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 3 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Self-lubricating connector
US-12508640-B2 · Dec 30, 2025 · US
Valve for Supplying and Purging Lubricants from Systems
US-2025277560-A1 · Sep 4, 2025 · US
Integrated level sensor for lubricant pump assembly
US-2025172242-A1 · May 29, 2025 · US
Heated lubricant pump
US-12215823-B2 · Feb 4, 2025 · US
Accumulator and lubricant supply system
US-11662060-B2 · May 30, 2023 · US
Self-Lubricating Connector
US-2023072745-A1 · Mar 9, 2023 · US
Self-lubricating connector
US-11548052-B2 · Jan 10, 2023 · US
Heated lubricant pump
US-2022275907-A1 · Sep 1, 2022 · US
Accumulator and lubricant supply system
US-2022221103-A1 · Jul 14, 2022 · US
Self-lubricating connector
US-2021299730-A1 · Sep 30, 2021 · US
Bolt lubrication
US-10578019-B2 · Mar 3, 2020 · US
Self-lubricating king pin joint with hollow king pin
US-10253805-B2 · Apr 9, 2019 · US
Self-Lubricating King Pin Joint With Hollow King Pin
US-2019048921-A1 · Feb 14, 2019 · US
Bolt lubrication
US-2019003389-A1 · Jan 3, 2019 · US
Self lubricating cam follower assembly
US-9982768-B2 · May 29, 2018 · US
Seals separated by retaining clip
US-2018112776-A1 · Apr 26, 2018 · US
Handheld work apparatus
US-9855672-B2 · Jan 2, 2018 · US
Bearing device
US-9624978-B2 · Apr 18, 2017 · US
Dual parallel outlet check valve
US-2016312953-A1 · Oct 27, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16N11/04?
- CPC F16N11/04 is the Cooperative Patent Classification code for “Spring-loaded devices.”
- How many patents are filed under CPC F16N11/04 (Spring-loaded devices)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC F16N11/04 growing?
- Publication counts under this code: 3 in 2023 vs 4 in 2025 (latest complete years).