Dual hydraulic braking systems for vehicles
Abstract
Abstract IN MEANS FOR DETECTING PRESSURE DIFFERENTIALS BETWEEN HYDRAULIC CIRCUITS IN A DUAL BREAKING SYSTEM A PISTON ASSEMBLY IS MOUNTED IN THE BORE OF A VALVE HOUSING AND HAS OPPOSED ENDS SUBJECTED TO THE PRESSURES OF THE TWO HYDRAULIC CIRCUITS. THE ASSEMBLY COMPRISES A PISTON SLIDABLE IN TWO SLEEVES WHICH IN TURN ARE SLIDABLE IN THE BORE. THE SLEEVES ARE LIMITED IN THEIR MOVEMENT TOWARDS EACH OTHER BY A STOP FIXED IN THE BORE. THE PISTON AND SLEEVES ARE KEYED TOGETHER AGAINST MOVEMENT OF THE PISTON AWAY FROM THE STOP RELATIVE TO THE SLEEVES. THUS WHEN PRESSURE ON ONE END OF THE ASSEMBLY DIFFERS SUBSTANTIALLY FROM THE OTHER END, THE PISTON AND ONE SLEEVE MOVE TOWARDS THE LOW PRESSURE END AND IN SO DOING ACTUATE INDICATOR MEANS. WHEN THE PRESSURES BECOME SUBSTANTIALLY EQUAL AGAIN THE PRESSURE AT ONE END ACTS ON THE END OF THE PISTON AND SAID ONE SLEEVE TO MOVE THE PISTON AGAINST EQUAL PRESSURE ACTING ON THE SMALLER AREA OF THE OTHER END OF THE PISTON, THE OTHER SLEEVE REMAINING UNMOVED. THIS RENDERS THE INDICATOR MEANS AGAIN INOPERATIVE.
Inventors
- 👤 Martin Green
Bibliographic Details
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