초록 ▼

A cartridge which contains a substance for preparation of a beverage and for use for preparation of the beverage. The cartridge has a base, a wall, a rim and a cover. The wall extends from the base to form a cup shape which is substantially a frustum shape, the rim extends from the wall and has a di

A cartridge which contains a substance for preparation of a beverage and for use for preparation of the beverage. The cartridge has a base, a wall, a rim and a cover. The wall extends from the base to form a cup shape which is substantially a frustum shape, the rim extends from the wall and has a diameter greater than the base and the cover is welded to the rim to contain the substance in the cartridge. The base further has sheared areas thinned, with respect to a base remainder, which extend to define arrangements which are spiral, substantially sinusoidal portions, radial segments and concentric arcs of a circle and which, along a line of each sheared area to define thickness, have a thickness which varies along the line, the sheared areas providing, upon extraction of the substance in the cartridge under pressure, openings through the base for filtering and obtaining the beverage.

대표청구항 ▼

[ We claim:] [1.] In a cartridge containing a substance for preparation of a beverage wherein the cartridge comprises a base, a well and a rim, wherein the wall extends laterally from the base to form a cup having a shape which is substantially a frustrum shape and wherein the rim extends from the w

[ We claim:] [1.] In a cartridge containing a substance for preparation of a beverage wherein the cartridge comprises a base, a well and a rim, wherein the wall extends laterally from the base to form a cup having a shape which is substantially a frustrum shape and wherein the rim extends from the wall and has a diameter greater than the base, wherein the cartridge comprises a cover welded to the rim to contain the substance within the cartridge and wherein the base has areas thinned with respect to a remainder of the base so that upon extraction of the substance in the cartridge under pressure, the thinned areas provide openings through the base for filtering and obtaining the beverage, the improvements comprising the cup base and wall being comprised of at least 90% aluminum and comprising the thinned areas being sheared areas which define an arrangement selected from the group consisting of a spiral, of substantially sinusoidal portions, of radial segments and of concentric arcs of a circle and wherein each sheared area extends for a distance and comprises a thickness which varies along its extent to provide the opening.