PARKING BRAKE SYSTEM OF A TIPPER VEHICLE
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United States of America Patent
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Issued Date -
Jul 18, 2024
app pub date -
Dec 27, 2023
filing date -
Jan 18, 2023
priority date (Note) -
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Abstract
A parking brake system of a tipper vehicle having a tiltable tipper body is described. The system comprises a parking brake having a brake chamber which is pressurizable for releasing the parking brake. A valve device is in fluid communication with the brake chamber, the valve device comprising an exhaust port. The valve device has an activated state in which the brake chamber is in fluid communication with the exhaust port whereby air from the brake chamber is discharged, thereby applying the parking brake, and an inactivated state in which said fluid communication is disconnected. Upon receipt of a tipping signal, a neutral gear signal and a low speed signal, and upon detecting that the parking brake is still in the released state, the valve device is changed from the inactivated state to the activated state in order to exhaust air from the brake chamber, causing the parking brake to become changed to the applied state.
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