| 摘要 |
There is provided a vehicular air brake system, comprising: a vehicle, a whe el rotatably coupled to the vehicle, an air brake configured for engaging the wheel to effect braking of the wheel, a pressure vessel configured for containing pressurized air, wherein the pressure vessel is fluidly coupled to the air brake and is configured to supply pressurized air to the air brake to bias the air brake to a position wherein the air brake is disengaged from the wheel, and a brake actuator coupled to the brake and configured to apply a force to the air brake to effect engagement of the air brake to the wheel in response to an application of force to the brake actuator. The pressure vessel includes a first shell portion comprising: a vessel wall portion, and a boss protruding from the vessel wall portion, wherein the boss includes a boss threaded section f or receiving a fitting with a fitting threaded section, and wherein the fitting threaded section is configured to register with the boss threaded section, and wherein the boss is formed from a blank used to manufacture the first shell portion.
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