Abstract: A brake pad comprises a first pad layer made of a first friction material and a second pad layer made of a second friction material different from the first friction material and operatively mounted to the first pad layer The first pad layer has a higher level of friction initially and the second pad layer has a higher level of friction after wearing and the first pad layer is less wcar resistant than the second pad layer. As the first pad layer wears away, the second pad layer commences to wear or “break-in.” Because the wearing is uneven at the interface, portions of the first pad layer continue to offer an immediate and higher level of friction as portions of the second pad layer “break-in” gradually to offer the high level of friction. Eventually, the first pad layer wears away, leaving the second pad layer already “broken-in” for a long-lasting life.

Abstract: A brake lining assembly for a wheel brake of a vehicle braking system includes a backing plate and a friction pad overlying the backing plate. An engagement panel is disposed between the backing plate and the friction pad for securing the friction pad to the backing plate. The engagement panel includes a plurality of engagement apertures to secure the friction material to the backing plate. The surface area of the panel is greater than the space defined by the engagement apertures. The panel thus forms a rigid frame for the friction pad, and provides structural support.

Abstract: A composition of matter for use as a friction material having soft malleable metallic (zinc) powder therein to attenuate low frequency vibrations that produce undesirable noise during a brake application.