Abstract: Fluid cooled wet brake system comprises a sealed housing containing a volume of lubricating oil, a disc disposed in the housing and adapted for fixing to a rotating body such as a wheel hub, and one or more stators. The stators are rotationally fixed but slidably mounted within the housing and can be pushed into contact with respective braking surfaces of the discs by conventional brake pistons. The stators are provided with a fluid inlet, a fluid outlet and one or more fluid flow paths extending between the inlet and the outlet through which a cooling fluid flows.

Abstract: A brake shoe (10) for a drum brake system (40) is provided with a brake lining (12) having a friction surface (14) which faces braking surface (60) of a brake drum (38). The lining (12) is characterized by the provision of one or more grooves (16) extending across the friction surface (14). The shoe (10) may be incorporated in a cooled drum brake system (10) in which cooling is provided by ventilation holes in the drum (38). Cooling may be further enhanced by the provision of ventilation holes (66) in a back plate (46) of the system (40). In an alternate system, cooling is provided by sealing the drum (38) to form a space for holding a volume of oil.

Abstract: An energy converting brake system 10 comprises a brake 12 comprising a cooling circuit 18 through which a brake cooling fluid flows. The cooling fluid is passed through heat exchanger 22 which also includes a thermoelectric conversion device 26. Heat from the cooling fluid is dissipated in the heat exchanger 22 through the thermoelectric conversion device 26, which in turn generates an electric current. The electric current can be stored in a storage device 28.

Abstract: A housing (10) for a braking system (56) comprises a casing (12) defining a cavity (14) for housing one or more friction pads (15). The casing (12) is composed of a plurality of separate walls including a circumferential wall (16), back wall (18), and a front wall (20). The circumferential wall (16) is provided with an internal fluid flow path (36) and a fluid inlet (38) and fluid outlet (40) which communicate with the fluid flow path (36). When a supply (45) of fluid is connected with the fluid inlet (38) and outlet (40) via a fluid circuit (43), fluid is circulated through the fluid flow path (36) to cool the housing (10).