Appeal No. 1999-0943
Application 08/906,135
(b) wrapping a length of wire in multiple turns tightly around a portion of the exterior
surface, the wire being formed of a material having a tensile strength of at least about 180,000
psi; and
(c) molding an outer shell over and substantially covering the length of wire,
wherein the wire is maintained at a tension of at least about twenty-five foot-pounds
subsequent to the step of molding.
19. A brake drum comprising:
(a) a tubular inner member having an interior surface suitable for directly slidingly
contacting a brake pad and an exterior surface, the inner member being made from an alloy
which includes at least about seventy-five volume percentage of aluminum and between about
ten volume percent and about twenty-five volume percent abrasive material;
(b) a length of wire tightly wrapped in multiple turns around substantially the entire
exterior surface, the length of wire having a diameter of between about 0.05 inches to about 0.25
inches, the wire being formed of a high-strength steel alloy; and
(c) a tubular outer shell molded over and substantially covering the length of the wire, the
tubular outer shell including at least one fastener for securing at least a portion of a wheel
assembly to the brake drum, the outer shell being made from material which includes at least
about seventy-five volume percent of aluminum,
wherein the wire has a tension of at least about twenty-five foot-pounds following
molding of the outer shell.
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