Hearthware Home Products of Wheeling, Illinois gained US patent 6195912 for an “Apparatus for roasting coffee beans.”
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Other players in coffee roasters are Bosch-Siemens Hausgeräte and Peter J. Listro Associates.
Abstract:
An improved apparatus and method for the hot air roasting of coffee beans is provided and includes structure for inhibiting contaminants from entering the hot air stream used in the roasting of coffee beans, structure for obtaining a uniform roast of the coffee beans, unitary structure for mounting a handle to a roasting chamber and removably and releasably mounting a cover to the roasting chamber, structure for initiating a roasting cycle and terminating the roasting cycle for a predetermined cooling period at any point during the roasting cycle, structure for double sealing a cover to a roasting chamber, structure for assembling a vessel, a metallic base, and a plastic mount ring into an integral roasting chamber, structure for releasably and removably mounting a roasting vessel to a main housing, dual filters for preventing the blockage of a hot air stream through a hull and chaff collector, and a “fan based” method for controlling the roasting temperature.
First of 15 Claims:
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By GlobalData- A roasting chamber for roasting coffee beans comprising:
a bottom including at least one air inlet opening to create a substantially vertical air stream into the roasting chamber;
a diverter located above the bottom in a position that is centered in said vertical air stream to redirect coffee beans moving upwardly in said vertical air stream toward a location in the roasting chamber that is remote from said at least one air inlet opening; and
at least one guide surface to guide said redirected coffee beans back toward said at least one air inlet opening.
By Navroz Havewala, just-food.com correspondent
