Gears having reduced roller element stresses and methods of manufacturing such gears
US-2018320758-A1 · Nov 8, 2018 · US
with two or more rows of rollers
with two or more rows of rollers · 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 | F16C19/28 |
| Official title | with two or more rows of rollers |
| Display label | with two or more rows of rollers |
| Total patents | 189 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 22 |
| 2017 | 20 |
| 2018 | 23 |
| 2019 | 29 |
| 2020 | 21 |
| 2021 | 18 |
| 2022 | 10 |
| 2023 | 12 |
| 2024 | 7 |
| 2025 | 10 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Prong type cage for a double row roller bearing assembly
US-10001169-B2 · Jun 19, 2018 · US
Bearing assembly
US-2017370407-A1 · Dec 28, 2017 · US
Friction roller speed increaser
US-2017335891-A1 · Nov 23, 2017 · US
Support bearing, in particular running roller
US-9759260-B2 · Sep 12, 2017 · US
Rolling-element bearing including seal unit
US-9739313-B2 · Aug 22, 2017 · US
Gearbox Planet Squeeze Film Damper
US-2017219080-A1 · Aug 3, 2017 · US
Gearbox Planet Squeeze Film Damper
US-2017219079-A1 · Aug 3, 2017 · US
Triple row yoke roller assembly
US-2017211619-A1 · Jul 27, 2017 · US
Roller bearing spring clip
US-9709098-B2 · Jul 18, 2017 · US
Integral centering spring and bearing support and method of supporting multiple damped bearings
US-9702404-B2 · Jul 11, 2017 · US
Hub-bearing having a light alloy rotor-hub
US-9694627-B2 · Jul 4, 2017 · US
Rotating control device having a partition seal assembly
US-2017167221-A1 · Jun 15, 2017 · US
Power Gearbox Pin Arrangement
US-2017167540-A1 · Jun 15, 2017 · US
Gearbox planet attenuation spring damper
US-9677659-B1 · Jun 13, 2017 · US
Integral centering spring and bearing support and method of supporting multiple damped bearings
US-2017122369-A1 · May 4, 2017 · US
Planet gearbox with cylindrical roller bearing with under race lube scheme
US-2017108113-A1 · Apr 20, 2017 · US
Stack bearing with carbonitrided bearing balls
US-2017108042-A1 · Apr 20, 2017 · US
Planet gearbox with cylindrical roller bearing with high density roller packing
US-2017089219-A1 · Mar 30, 2017 · US
Double row cylindrical roller bearing with high length to diameter ratio rollers
US-2017089218-A1 · Mar 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16C19/28?
- CPC F16C19/28 is the Cooperative Patent Classification code for “with two or more rows of rollers.”
- How many patents are filed under CPC F16C19/28 (with two or more rows of rollers)?
- Our database includes 189 publications tagged with this CPC code.
- Is patent activity under CPC F16C19/28 growing?
- Publication counts under this code: 7 in 2024 vs 10 in 2025 (latest complete years).