A disposable single-use beverage filter basket filled with beverage grounds, and a beverage brewer having a cartridge for placement of the beverage filter basket. A permeable filter basket has a rigid frame having a bottom, a plurality of ribs, and a top rim that define side openings, and a non-wove
A disposable single-use beverage filter basket filled with beverage grounds, and a beverage brewer having a cartridge for placement of the beverage filter basket. A permeable filter basket has a rigid frame having a bottom, a plurality of ribs, and a top rim that define side openings, and a non-woven filter medium that is bonded thermally to the material of the frame to cover the side openings. The non-woven filter medium is made of recyclable or compostable plastic or bio-polymer, and frame is made of the material of the non-woven filter medium. The permeable filter basket is filled with beverage grounds and enclosed with a film cover. The inlet probe of the brewer pierces the cover and admits a heated liquid into the beverage grounds, and creates a brewed beverage that flows through the filter material and exits an opening in a bottom portion of the cartridge.
대표청구항▼
1. A permeable filter basket for containing beverage grounds during the brewing of a beverage by introduction of pressurized water therethrough, including: (a) a frame made of a recyclable or compostable synthetic, natural or bio-based polymer material, comprising: a continuous, circular top rim tha
1. A permeable filter basket for containing beverage grounds during the brewing of a beverage by introduction of pressurized water therethrough, including: (a) a frame made of a recyclable or compostable synthetic, natural or bio-based polymer material, comprising: a continuous, circular top rim that defines a top opening of the frame; a circular closed bottom having a peripheral edge; and a plurality of spaced apart ribs that extend from the top rim to the peripheral edge of the circular bottom, wherein the circular bottom peripheral edge, the plurality of ribs, and the top rim define a frame, the frame having a generally cylindrical profile with a tapered shape and having a plurality of side openings, the frame dimensioned for use within a single serve beverage brewing machine; and(b) a liquid-permeable non-woven filter medium insert that has a same cylindrical and tapered profile as that of the frame, the filter medium insert made of a recyclable or compostable synthetic, natural or bio-based material inherently formed of random, interconnected fibers, the fibers collectively forming inherently disordered inlet and outlet fluid passageways therethrough, the non-woven filter medium insert being separately formed from the same material as the frame, wherein the non-woven filter medium insert is sized such that the material of the frame, including the circular bottom peripheral edge, the plurality of ribs, and the top rim, is insert injection molded into and around the fibers of the non-woven filter medium insert along locations where the non-woven filter medium insert contacts the frame, whereby the non-woven filter medium insert is integrally formed into the frame and covers the plurality of side openings so as to define a beverage grounds receptacle area that is in communication with the top opening;wherein the circular closed bottom prevents passage of water therethrough during brewing and is adapted to redirect pressurized water contacting the bottom toward the top opening so as to facilitate intermixing with beverage grounds prior to exiting the filter basket through the plurality of side openings;wherein the disordered inlet and outlet fluid passageways of the non-woven filter medium insert restrict water flow through the non-woven filter medium insert, thereby increasing a residence time of the water within the beverage grounds receptacle area so as to influence the strength and taste profile of a beverage brewed within the filter basket. 2. The permeable filter basket of claim 1, wherein the non-woven filter medium insert is made of polypropylene, and the frame is made of polypropylene. 3. The permeable filter basket of claim 1, wherein the non-woven filter medium insert and frame are made of polylacticacid, polyhydroxybutaric acid, or bio-based polymers. 4. The permeable filter basket according to claim 1 where the frame of the permeable filter basket is tapered, for nesting of an upper permeable filter basket into a lower permeable filter basket. 5. The permeable filter basket according to claim 4 where one or more of the ribs of the frame include an inwardly extending ledge positioned along the rib, where the circular bottom of the frame of the upper permeable filter basket rests upon the ledge of the one or more ribs of the frame of the lower permeable filter basket, for limiting an amount by which the upper permeable filter basket is insertable into the lower permeable filter basket, and to thereby define a space between respective circular bottoms of the frame of the upper permeable filter basket and the frame of the lower permeable filter basket. 6. The permeable filter basket according to claim 2 where the frame of the permeable filter basket is tapered, for nesting of an upper permeable filter basket into a lower permeable filter basket. 7. The permeable filter basket according to claim 6 where one or more of the ribs of the frame include an inwardly extending ledge positioned along the rib, where the circular bottom of the frame of the upper permeable filter basket rests upon the ledge of the one or more ribs of the frame of the lower permeable filter basket, for limiting an amount by which the upper permeable filter basket is insertable into the lower permeable filter basket, and to thereby define a space between respective circular bottoms of the frame of the upper permeable filter basket and the frame of the lower permeable filter basket. 8. The permeable filter basket according to claim 3 where the frame of the permeable filter basket is tapered, for nesting of an upper permeable filter basket into a lower permeable filter basket. 9. The permeable filter basket according to claim 8 where one or more of the ribs of the frame include an inwardly extending ledge positioned along the rib, where the circular bottom of the frame of the upper permeable filter basket rests upon the ledge of the one or more ribs of the frame of the lower permeable filter basket, for limiting an amount by which the upper permeable filter basket is insertable into the lower permeable filter basket, and to thereby define a space between respective circular bottoms of the frame of the upper permeable filter basket and the frame of the lower permeable filter basket. 10. A beverage brewer, comprising: (A) a cartridge configured for holding a disposable, single-use beverage filter basket, the cartridge having an opening in a bottom portion;(B) a disposable single-use beverage filter basket placed and disposed within the cartridge of the brewer, the beverage filter basket including (1) a permeable filter basket comprising (a) a frame made of a recyclable or compostable synthetic, natural or bio-based polymer material, comprising: a continuous, circular top rim that defines a top opening of the frame; a circular bottom having a peripheral edge; and a plurality of spaced apart ribs that extend from the top rim to the peripheral edge of the circular bottom, wherein the circular bottom peripheral edge, the plurality of ribs, and the top rim define a frame having a generally cylindrical profile with a tapered shape and which has a plurality of side openings;(b) a liquid-permeable non-woven filter medium insert that has a same cylindrical and tapered profile as that of the frame, the filter medium insert made of a recyclable or compostable synthetic, natural or bio-based material inherently formed of random, interconnected fibers, the fibers collectively forming disordered inlet and outlet fluid passageways therethrough, the non-woven filter medium insert being separately formed from the same material as the frame, wherein the material of the frame, including the circular bottom peripheral edge, the plurality of ribs, and the top rim, is insert injection molded into and around the fibers of the non-woven filter medium insert along locations where the non-woven filter medium insert contacts the frame, whereby the non-woven filter medium insert is integrally formed into the frame and covers the plurality of side openings so as to define a beverage grounds receptacle area that is in communication with the top opening; and(c) wherein the circular bottom is closed to prevent passage of water therethrough such that water exits the permeable filter basket only through the non-woven filter medium insert through the plurality of side openings and directly into the cartridge;(2) an amount of beverage grounds, prefilled and disposed within the permeable filter basket, and(3) a cover attached to the top rim and across the opening at the top of the frame, to maintain the beverage grounds within the permeable filter basket, the cover selected from the group consisting of a foil, foil laminate, metalized film, coated film or multilayer laminate EVOH film, polyethylene film, thermoplastic starch film, plastic film, and barrier plastic film, and laminates and composites thereof; and(C) an inlet probe configured to pierce the cover and to admit a heated liquid into the beverage filter basket to interact with the beverage grounds and create a brewed beverage;wherein the brewed beverage flows through the non-woven filter medium covering the plurality of side openings and exits through the opening in the bottom portion of the cartridge. 11. The beverage brewer according to claim 10, wherein the cartridge includes a sidewall that is spaced apart from the plurality of side openings of the beverage filter basket. 12. The beverage brewer according to claim 10, where the frame of the filter basket is made of polypropylene, and the non-woven filter medium insert is made of polypropylene. 13. The beverage brewer according to claim 10, where the frame of the filter basket is made of polylactic acid, and the non-woven filter medium insert is made of polylactic acid. 14. The beverage brewer according to claim 10, where the beverage grounds are selected from the group consisting of coffee grounds and tea grounds. 15. The beverage brewer according to claim 10, where the beverage filter basket is dimensioned for use in a single serve coffee brewer. 16. A beverage filter basket for use in brewing a beverage from beverage grounds, including: (a) a permeable filter basket comprising: (1) a frame made of a recyclable or compostable synthetic, natural or bio-based polymer material, comprising: a continuous, circular top rim that defines a top opening of the frame; a circular bottom having a peripheral edge; and a plurality of spaced apart ribs that extend from the top rim to the peripheral edge of the circular bottom, wherein the circular bottom peripheral edge, the plurality of ribs, and the top rim define a frame having a generally cylindrical profile with a tapered shape and which has a plurality of side openings;(2) a liquid-permeable non-woven filter medium insert that has a same cylindrical and tapered profile as that of the frame, the filter medium insert made of a recyclable or compostable synthetic, natural or bio-based material inherently formed of random, interconnected fibers, the fibers collectively forming disordered inlet and outlet fluid passageways therethrough, the non-woven filter medium insert being separately formed from the same material as the frame, wherein the non-woven filter medium insert is sized such that the material of the frame, including the circular bottom peripheral edge, the plurality of ribs, and the top rim, is insert injection molded into and around the fibers of the non-woven filter medium insert along locations where the non-woven filter medium insert contacts the frame, whereby the non-woven filter medium insert is integrally formed into the frame and covers the plurality of side openings so as to define a beverage grounds receptacle area that is in communication with the top opening; and(3) wherein the circular bottom is closed to prevent passage of water therethrough such that water exits the permeable filter basket only through the non-woven filter medium insert through the plurality of side openings;(b) an amount of beverage grounds, prefilled and disposed within the permeable filter basket, and(c) a cover attached to the top rim and across the opening at the top of the frame, to maintain the beverage grounds within the permeable filter basket, the cover selected from the group consisting of a foil, foil laminate, metalized film, coated film or multilayer laminate EVOH film, polyethylene film, thermoplastic starch film, plastic film, and barrier plastic film, and laminates and composites thereof. 17. The beverage filter basket of claim 16, wherein the non-woven filter medium insert is made of polypropylene, and the frame is made of polypropylene. 18. The beverage filter basket of claim 16, wherein the non-woven filter medium insert is made of polylacticacid, and the frame is made of polylacticacid. 19. The beverage filter basket according to claim 16, further including a disposable impermeable barrier that contains and seals therewithin the beverage filter basket. 20. The beverage filter basket according to claim 16, wherein the beverage grounds are selected from the group consisting of coffee grounds and tea grounds. 21. The permeable filter basket according to claim 1, wherein the material of the frame is insert injection molded into and around the fibers of the non-woven filter medium with the non-woven filter medium insert being closed in cross-section.
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