The present disclosure provides a heat shield. The heat shield may comprise a first shield layer defining a cylindrical inner diameter surface of the heat shield, the cylindrical inner diameter surface having a radius and an axis, an air gap layer radially outward of the first shield layer, a second shield layer radially outward of the air gap layer, a first insulation layer radially outward of the second shield layer, a foil layer radially outward of the second shield layer, a second insulation layer radially outward of the foil layer, and a third shield layer radially outward of the second insulation layer.

The present disclosure provides a heat shield. The heat shield may comprise a first shield layer defining a cylindrical inner diameter surface of the heat shield, the cylindrical inner diameter surface having a radius and an axis, an air gap layer radially outward of the first shield layer, a second shield layer radially outward of the air gap layer, a first insulation layer radially outward of the second shield layer, a foil layer radially outward of the second shield layer, a second insulation layer radially outward of the foil layer, and a third shield layer radially outward of the second insulation layer.

The invention relates to a clutch hub. The clutch hub (1) comprises a hub body (2) with an axial passage opening (4) for receiving a shaft (5) and with in each case one face side (3a, 3b) at the two axial ends of the passage opening (4). An internal surface (6) is formed in the passage opening (4), and a flat surface (7a, 7b) annularly surrounding the passage opening (4) is formed on each of the face sides (3a, 3b). The internal surface (6) is covered by an electrical insulation coating (8) in the form of a ceramic coating. The electrical insulation coating (8) also, in continuous fashion, covers a respective annular region (9a, 9b), surrounding the passage opening (4), on the flat surfaces (7a, 7b) and a transition region (10a, 10b) formed between the internal surface (6) and the respective annular region (9a 9b).

A brake rotor comprising a brake pad wear surface; a hat surface; and a decorative insert comprising an insert material, the decorative insert disposed on the brake pad wear surface, the hat surface, or both; wherein at least one of a friction coefficient between the decorative insert and a brake pad is substantially the same as a friction coefficient between the brake pad wear surface and the brake pad, a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the brake pad wear surface, or a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the hat surface; and at least a portion of the decorative insert is visible on the brake pad wear surface, the hat surface, or both.

A pressure plate for a friction coupling such as a clutch or brake system includes one or more pockets with a phase change material disposed therein. The phase change material operates to absorb and release heat when the friction coupling cycles between activation and deactivation so as to minimize a maximum temperature of the pressure plate.

A friction assembly has a support plate, at least one brake pad and at least one reinforcing foil of the plate. The brake pad and the support plate are co-moulded from at least one heat-resistant resin. The reinforcing foil is fixed to the support plate via anchoring projections, joined to and which extend away from the foil, embedded in the resin to prevent or limit deformations of the support plate in the use of the assembly.

A clutch for a lift fan comprises at least one output shaft lug key positioned in a keyway of at least two output clutch plates and extending axially from one to the other of the two output clutch plates. The output shaft lug key couples the rotation of the output clutch plates to the rotation an output shaft and allows axial movement of the two output clutch plates relative the output shaft lug key. The width of an inner surface of the output shaft lug key varies along the axial length as a function of the proximity to a home axial position of each of the output clutch plates when in the disengaged position.

A method of making a brake assembly using recycled friction disks may comprise removing a first friction disk from a worn brake assembly, removing a portion of the first friction disk to reduce a thickness of the first friction disk, and incorporating a previously unused friction disk and the first friction disk into a brake assembly comprising unworn rotor disks made of a first material. The previously unused friction disk and the first friction disk may comprise a second material different from the first material. The thickness of the first friction disk may be different from a thickness of the previously unused friction disk.

A brake drum having a composite structure includes a cylindrical body defining an inner friction surface and an outer surface. The cylindrical body includes a drum core comprising an AlSi alloy, the drum core including an inner surface, and an outer surface of the drum core defining the outer surface of cylindrical body. The cylindrical body includes a thermal barrier layer comprising a thermally insulating material on the inner surface of the drum core, and a wear-resistant layer comprising an FeAlSiZr alloy on the inner surface of the drum core over the thermal barrier layer, the wear-resistant layer defining the inner friction surface of the cylindrical body.

A method of manufacturing a brake rotor or brake drum having a composite structure includes casting an aluminum alloy to form a core of the brake rotor or brake drum, the core defining a core surface, depositing a high entropy alloy or yttrium stabilized zirconia on the core surface to form a thermal barrier layer on the core surface, and depositing an iron-aluminum-silicon-zirconium alloy on the thermal barrier layer to form a wear-resistant layer on the thermal barrier layer, the wear-resistant layer defining a friction surface of the brake rotor or brake drum.