Spring brake actuator
US11209058B2 · kind B2 · utility
0Cited by
32References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Dec 28, 2021 |
| Priority date | — |
| Expiry date | May 27, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/50866
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A spring brake actuator is for braking a wheel of a vehicle. The spring brake actuator has an axially elongated housing having a parking brake chamber and a service brake chamber; a main compression spring in the parking brake chamber; a flexible diaphragm in the parking brake chamber; and a pressure plate in the parking brake chamber, the pressure plate located axially between the main compression spring and the flexible diaphragm. The flexible diaphragm has a contoured portion that inhibits radial shifting of the pressure plate with respect to the flexible diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.