Patent ID: 8249789
Filing Date: 2012-08-21
Classification: B60T,Y10T

Abstract:
1. A method of filling a chamber of a trailer spring brake and a trailer reservoir with air supplied by a tractor comprising: providing pressurized air from the tractor to the trailer; providing a user input that represents a filling mode of the trailer spring brake chamber and the trailer reservoir; and routing the pressurized air supplied by the tractor to the trailer spring brake chamber and the trailer reservoir based on the filling mode selected by said user input, a first of the filling modes selected by the user input resulting in pressure being applied to the trailer spring brake chamber and the trailer reservoir and resulting in release of the spring brake before a pressure of the air in the trailer reservoir reaches a normal operating pressure, and a second of the filling modes selected by the user input resulting in the trailer reservoir being charged by a trailer service line and the trailer spring brake chamber being charged by a trailer supply line.