Coffee beverage drip brewer

Claim 1

A coffee beverage drip brewer adapted for the brewing of a single serving of the coffee beverage comprising a frustoconical body having an upwardly and outwardly flaring skirt extending from a generally planar circular end and terminating at a circular open top, the skirt extending outwardly at an angle substantially ranging between 40° and 50° from a horizontal plane such that the body may be received within a wide range of single serving drinking vessels with the skirt in abutting contact against the mouth of the vessel, said body further being geometrically proportioned to accommodate a particular measure of water, the lower end of the body defining a plurality of drainage openings, a filter cup conforming to the frustoconical body, means forming an annular groove on the interior surface of the skirt, a partition disc adapted for snap fitting assembly within the body with the peripheral edge of the disc being seated within the annular groove for lockingly engaging the side wall of the filter cup between the partition disc and annular groove, said partition disc being positioned in overlying relationship with respect to the filter cup to provide an enclosed infusion chamber for holding a measure of roasted and ground coffee, said coffee occupying a volume within the infusion chamber being substantially less than the volumetric capacity of the chamber to compensate for swelling of the coffee ground during the brewing operation, an outflow control means for permitting controlled gravity flow of a charge of hot brewing water through said body for optimizing the coffee extraction rate including a plurality of apertures in the partition disc permitting entrance of brewing water into the infusion chamber and the brewing of the coffee, and further including a rib structure on the lower end of the body, said filter cup being supported above the lower end by said rib structure, whereby the coffee beverage flowing through the filter cup from the infusion chamber passes through the drainage openings without deposit of coffee grounds and a fresh coffee beverage may be brewed directly over and served in a drinking vessel selected from a wide range of vessel shapes and sizes.