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US 6,305,759 B1Granted
Trailer ABS modulator with direct exhaust and control line/volume drain capability
AssigneeAlliedSignal Truck Brake Systems Co.
InventorsThanh Ho, Robert J. Herbst
Life of this patent
Estimating the term…
Abstract
A self-cleaning feature is provided for a trailer ABS modulator. Direct exhaust is provided through the piston or diaphragm to establish control line and control volume drain capabilities. This provides for moisture removal from the control line or control volume. Quick exhaust during normal service braking is also improved and, likewise, exhaust during the ABS mode is improved.
Claims14
A trailer ABS modulator valve assembly providing improved drainage of an ABS exhaust passage comprising:
- a housing having a supply port, a delivery port and an exhaust port;
- a movable valve member received in the housing and movable between first and second positions in response to normal service brake application for controlling communication between the supply port, the delivery port, and the exhaust port;
- and
- a solenoid valve assembly associated with antilock braking that communicates with the exhaust port through the valve member for selectively applying and exhausting pressurized air from the supply port to the delivery port and the exhaust port, respectively, in response to an antilock braking event.
1 more element
A control valve for a brake system that removes condensation and contamination from an ABS exhaust passage comprising:
- a housing;
- a movable valve member defining a control volume on one side thereof which is adapted for connection to an associated supply of pressurized air for selectively actuating an associated braking system;
- a solenoid valve assembly that selectively cycles brake application and release during an antilock braking event;
- and
- a common exhaust communicating with the control volume and the solenoid valve assembly for improving quick exhaust during normal service braking and improving exhaust during an antilock braking event.
2 more elements
Dependencies are inferred from the claim text.