- All sections
- B - Performing operationstransporting
- B60T - Vehicle brake control systems or parts thereofbrake control systems or parts thereof, in generalarrangement of braking elements on vehicles in generalportable devices for preventing unwanted movement of vehiclesvehicle modifications to facilitate cooling of brakes
- B60T 15/30 - Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed-air or vacuum source or atmosphere controlled by three fluid pressures with a quick braking action
Patent holdings for IPC class B60T 15/30
Total number of patents in this class: 26
10-year publication summary
|
3
|
1
|
3
|
4
|
0
|
1
|
1
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 572 |
13 |
| New York Air Brake LLC | 266 |
6 |
| Westinghouse Air Brake Technologies Corporation | 503 |
2 |
| Siemens AG | 24353 |
1 |
| Amsted Rail Company, Inc. | 439 |
1 |
| New York Air Brake Corporation | 91 |
1 |
| Trinity Industries, Inc. | 73 |
1 |
| Wabtec Holding Corp. | 374 |
1 |
| Other owners | 0 |