Abstract:
In a preferred form of the invention a disc brake rotor is disclosed which is formed of a hypereutectic gray iron composition having a relatively high capacity for damping mechanical vibrations, excellent wear resistance and high thermal conductivity. The composition is a pearlitic gray iron having a carbon equivalent of at least 4.5. Carbon is present in combined form in pearlite and as ASTM Type-A flake graphite.
Abstract:
An air convection range surface heater has a centrifugal air impeller for recirculating electrically heated air and includes fixed stator vanes operative with the impeller to increase the mass airflow through a heat exchanger and into an air circulation space adjacent a utensil to thereby distribute maximum heat flux to the utensil. The unit provides both inner and outer cooperating spill chambers that readily separate the heated air from spillage to eliminate fire and electrical short circuiting hazards. A solid state air monitor and control circuit is provided for throttling power input to limit the maximum air temperature in the unit''s heat exchanger at any desired value.