Abstract: An air brake system for a truck in which various control valves controlling air supply to air sub-systems, parking and trailer brakes, and various brake system condition signal generators are mounted on a common manifold positioned remotely from the truck engine compartment and instrument panel, removing them from the instrument panel area and improving the plumbing arrangements for installation, diagnostics and servicing while clearing instrument panel space for other controls and devices which need the benign environment such as that in the truck cab provided for the truck driver. The system components may be used as needed for a straight truck or one composed of a tractor and trailer combination, or on a truck tractor adapted to tow a trailer.

Abstract: An air transfer system joins the plenum of a first vehicle section to the plenum of a second vehicle section in an articulated coach vehicle with minimal deflection or intrusion into the passenger space. A generally V-shaped collection manifold in the rear vehicle section carries air from a plenum to an outlet near the end and top center of the rear section. A similar manifold in the front section carries air from an inlet near the end and top center of the front section to the other plenum. A bellows of a relatively stiff rectangular cross-section joins the outlet and inlet to complete the connection, and deflects as the vehicle sections rotate without passenger space intrusion.