Railcar bogie
US-10875551-B2 · Dec 29, 2020 · US
Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)}
Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)} · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B61F5/30 |
| Official title | Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)} |
| Display label | Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)} |
| Total patents | 87 |
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 | 8 |
| 2016 | 19 |
| 2017 | 7 |
| 2018 | 6 |
| 2019 | 17 |
| 2020 | 12 |
| 2021 | 5 |
| 2022 | 8 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Railcar bogie
US-10875552-B2 · Dec 29, 2020 · US
Chassis for Rail Vehicles
US-2020062282-A1 · Feb 27, 2020 · US
Railcar bogie
US-2019375436-A1 · Dec 12, 2019 · US
Railcar bogie
US-2019329659-A1 · Oct 31, 2019 · US
Chassis frame with spring cup
US-10457298-B2 · Oct 29, 2019 · US
Ultrasonic flaw detector and ultrasonic flaw detecting method for composite material
US-2019323997-A1 · Oct 24, 2019 · US
Bogie of a rail vehicle with at least two wheelsets mounted in axleboxes and at least one transverse member
US-2019322296-A1 · Oct 24, 2019 · US
Method of producing plate spring for railcar bogie
US-10427696-B2 · Oct 1, 2019 · US
Method of assembling railcar bogie, measurement jig, and railcar bogie
US-2019291753-A1 · Sep 26, 2019 · US
Railcar bogie
US-2019291583-A1 · Sep 26, 2019 · US
Spring cup for a primary suspension of a rail vehicle
US-10421466-B2 · Sep 24, 2019 · US
Railway truck with improved bearing adapter
US-10392033-B2 · Aug 27, 2019 · US
Wheel set for a rail vehicle
US-10370009-B2 · Aug 6, 2019 · US
Rail road car truck and members therefor
US-10286932-B2 · May 14, 2019 · US
Railcar axle box and method of producing the same
US-2019084596-A1 · Mar 21, 2019 · US
Truck for railcar
US-10232864-B2 · Mar 19, 2019 · US
Railcar bogie
US-2019016352-A1 · Jan 17, 2019 · US
Axle box suspension of railcar bogie and method of producing the same
US-2019009798-A1 · Jan 10, 2019 · US
Railcar bogie
US-2019009801-A1 · Jan 10, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B61F5/30?
- CPC B61F5/30 is the Cooperative Patent Classification code for “Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)}.”
- How many patents are filed under CPC B61F5/30 (Axle-boxes mounted for movement under spring control in vehicle or bogie underframes {(B61F5/36 takes precedence over B61F5/305 - B61F5/34)})?
- Our database includes 87 publications tagged with this CPC code.
- Is patent activity under CPC B61F5/30 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).