Coffeemaker filter

Claim 2

A coffeemaker filter basket for receiving ground coffee comprising: a. a generally cylindrical frame member having a generally circular sidewall and a generally flat bottom wall; b. A very fine mesh filter material connected to the circular sidewall of said frame; and c. a fine mesh filter material connected to the bottom wall of said frame, the openings in the filter material on the sidewalls of said frame being smaller than the openings in the filter material on the generally flat bottom wall of said frame so that brewed liquid coffee flows readily through the small openings in the sidewalls of said coffee filter basket and the coffee grounds in the bottom of the basket prefilter the brewed coffee before it passes through the larger openings in the generally flat bottom wall of the filter basket.

Claim 3

A coffeemaker filter basket as defined in claim 1 wherein the apertures in the fine mesh filter material on the bottom wall are between 100 and 200 microns in size.

Claim 4

An improved coffeemaker filter as Defined in claim 1 wherein the apertures in the fine mesh filter material on the bottom wall are between 100 and 200 microns in size, and the apertures in the very fine mesh filter material on the circular sidewall of the frame are between 60 and 90 microns in size.

Claim 5

A coffeemaker filter basket as defined in claim 1 wherein the apertures in the fine mesh filter material on the bottom wall of the frame are 150 microns in size and the apertures in the very fine mesh filter material on the circular sidewall of the frame are 75 microns in size.

Claim 6

A coffeemaker filter basket as defined in claim 1 wherein the generally circular sidewall of said frame is formed of three circular rings of plastic vertically spaced from each other and integrally connected to each other by a plurality of generally parallel plastic ribs, and the very fine mesh filter material is connected to the inside surfaces of said circular rings and ribs.

Claim 7

A coffeemaker filter basket as defined in claim 1 wherein the generally flat bottom wall of said frame is formed of a small-diameter plastic ring, a large-diameter plastic ring and a plurality of plastic spokes extending radially from the small-diameter ring to the large-diameter ring for integrally connecting the rings to each other, and the fine mesh filter material is connected to the upper surfaces of the rings and plastic spokes.

Claim 8

A coffee percolator comprising: a. a liquid receptacle; b. a percolator tube positioned within said liquid receptacle; c. a metal coffee basket mounted on the upper portion of said percolator tube, said metal basket having a generally circular sidewall, a generally flat bottom wall and a plurality of relatively large apertures formed in said bottom wall; d. a spreader plate having a plurality of apertures formed therein positioned on top of said metal coffee basket; and e. a coffeemaker filter basket as defined in claim 1 positioned within said metal coffeemaker basket, the generally circular sidewall of said coffeemaker filter basket being spaced inwardly from the generally circular sidewall of said metal coffeemaker basket, and the generally flat bottom wall of said coffeemaker filter basket being spaced upwardly from the generally flat bottom wall of said metal coffee basket so that boiling water may flow upwardly through said percolator tube downwardly through the openings in said spreader plate downwardly into the coffeemaker filter, outwardly through the filter material of the filter basket and through the relatively large apertures in the bottom wall of the metal coffeemaker basket to the lower portion of the liquid receptacle.