Abstract:
The present invention is directed to a filter basket having a wall configured to form a basket. The wall has a drain hole formed in a lower portion thereof and a regulating member for regulating a flow of liquid flowing through the basket into the drain hole. One embodiment includes a pair of planar surfaces positioned within the basket and connected to an inner surface of the wall; the pair of planar surfaces define a longitudinal slot therebetween. The size of the slot is configured to restrict the flow of fluid through the basket to maintain a predetermined level of fluid within the basket for a predetermined dwell period of about five minutes to about seven minutes. A method of brewing a beverage is also disclosed including the steps of placing a plurality of beverage flavor elements within a filter basket, dispensing water over the plurality of beverage flavor elements within the filter basket at a predetermined flow rate, providing structure within the filter basket to restrict the flow of water through the filter basket such that a level of water in the basket rises to a predetermined level at which the flow rate of water into the filter basket equals a flow rate of water out of the basket, and continuing dispensing water over the plurality of beverage flavor elements for a predetermined dwell period after the flow rate of water into the filter basket equals the flow rate of water out of the basket.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an apparatus and method of brewing coffee and, more particularly, to an apparatus and method of brewing coffee utilizing a novel coffee maker filter basket with a steeping feature. 
     2. Description of the Related Art 
     Over the course of time, there have been several attempts at new apparatus and methods for brewing a rich and robust cup (or pot) of coffee. For example, an ancient method of brewing coffee, referred to as the “jug”, included the steps of pouring hot water over coffee grounds in a stoneware jug and letting the grounds soak for approximately five hours. The coffee was carefully poured out of the jug in an attempt to avoid pouring grounds into the cup. 
     A more recent version of the jug method, referred to as a plunger pot or french press, employs a glass cylinder with a top having a plunger rod passing therethrough. The rod is attached to a metal filter that fits securely inside the cylinder. To make coffee, the coffee grounds and hot water are placed in the cylinder and the grounds are allowed to steep for a predetermined period of time (approximately three to five minutes). This will give the coffee grounds time to swell and the water will extract the flavor from the coffee grounds. Finally, the plunger is pressed down to force the grounds to the bottom of the cylinder and the coffee above the plunger may be consumed. 
     Today, automatic drip coffee makers are common and convenient means for making coffee. Coffee is made by dispensing water from a reservoir through the ground coffee and into a carafe below for serving. The automatic drip coffee makers typically include at least the following elements: a water reservoir for storing a predetermined amount of water relative to the quantity of coffee the user intends to brew; a heating element for heating the water stored in the water reservoir prior to the water being dispensed over the coffee grounds; a basket for housing a coffee filter and coffee grounds; a carafe for receiving the water after it passes over the coffee grounds and through the coffee filter; and a heating element for keeping the carafe of brewed coffee warm. 
     However, in today&#39;s automatic drip coffee makers, the flavor of the coffee is not as rich and robust as it could be, due to the amount of steeping that the coffee grounds are subject to (or not subject to). The term steeping refers to the amount of soaking or wetting that the coffee grounds undergo. If the coffee grounds merely get wetted out (i.e., the grounds just get wet, but they do not get wet enough to brew), the quality and taste of the coffee will suffer. 
     Thus, in order to brew a rich and robust pot of coffee in an automatic drip coffee maker, there have been several attempts in the prior art to regulate the flow rate of water over the coffee grounds, thereby regulating the amount of steeping. For example, in conventional coffee makers the heating element may be configured to regulate the flow rate of the water. 
     A filter basket is commonly used within a coffee maker to support the filter which carries the coffee grounds. Conventional filter baskets are typically conical in shape with a large opening on top and a relatively small outlet hole in the bottom. The hot water enters the large opening in the top, passes over the coffee grounds in the filter and exits through the small outlet hole in the bottom. 
     The prior art also discloses various by-pass configurations for regulating the flow of water through the filter basket. For example, U.S. Pat. No. 4,108,053 discloses a variable brew coffee maker which includes a spreader plate-spreader basket assembly for selectively proportioning the amount of water directed into the coffee grounds and the amount of water directed via an overflow duct which by-passes the coffee grounds directly into the receptacle for diluting the brewed coffee therein. Also, U.S. Pat. No. 5,249,509 discloses a device to vary the strength of a brewed beverage wherein the desired strength is achieved by controlling the volume of hot water contacting the beverage particles. This goal is achieved by varying the size of a slot to bypass more or less of the hot water around the filter containing the particles. However, these types of systems disclose apparatus and methods for making a weaker cup of coffee, not a richer and more robust cup of coffee. 
     Moreover, the size of the outlet hole in the basket often allows the water flow that is entering the basket to flow out of the basket without any restriction. Therefore the coffee grinds get wet and they don&#39;t have an opportunity to properly steep. 
     Thus, a need exists for a filter basket which may be used in an automatic drip coffee maker which will provide enhanced steeping, thereby producing rich and robust coffee. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to provide a filter basket which may be used in an automatic drip coffee maker which will provide enhanced steeping, thereby producing rich and robust coffee. It is also an object of this invention to provide an inexpensive and automatic apparatus and method for creating a steeping cycle in a coffee maker. 
     One embodiment of the filter basket in accordance with the present invention includes a wall configured to form a basket, the wall having a drain hole formed in a lower portion thereof; and means for regulating a flow of liquid flowing into the basket into the drain hole. To use the filter basket in hot beverage applications, such as brewing coffee, the filter basket must be formed of a plastic material capable of withstanding a temperature of at least 212 degrees Fahrenheit. To receive conically shaped filters, the filter basket may be substantially conically shaped. 
     One embodiment of the means for regulating a flow of liquid includes a pair of planar surfaces positioned within the basket and connected to an inner surface of the wall, wherein the pair of planar surfaces define a longitudinal slot therebetween. The slot may be defined by separating the pair of planar surfaces or by staggering the pair of planar surfaces. 
     The slot has a first end and a second end wherein a width of the slot is greater in the first end than in the second end. The size of the slot is configured to restrict the flow of fluid through the basket to maintain a predetermined level of fluid within the basket for a predetermined dwell period. The predetermined dwell period is preferably in the range of about five minutes to about seven minutes. The wall also includes a first end and a second end, wherein the first end defines an inlet opening for receiving a filter and coffee grounds. 
     Another embodiment of the means for regulating a flow of liquid includes a planar surface positioned within the basket and connected to an inner surface of the wall, wherein the planar surface has a longitudinal slot formed at least partially therein and a hole formed in a lower portion thereof. 
     An adjustable means for regulating a flow of liquid through a filter basket is also disclosed. The adjustable means for regulating a flow of liquid includes a tube mounted within the basket adjacent to the drain hole and an adjustment rod positioned within the tube. Each of the tube and the adjustment rod have at least one longitudinal slot formed therein for regulating the flow of liquid from the basket through the drain hole. The adjustment rod preferably has a plurality of longitudinal slots of varying length formed therein. 
     Yet another embodiment of the means for regulating a flow of liquid includes a planar surface positioned within the basket and connected to an inner surface of said wall and a bimetallic strip. The planar surface has a longitudinal slot formed at least partially therein and a hole formed in a lower portion thereof. The bimetallic strip is positioned adjacent to the planar surface and covers the longitudinal slot. 
     Still yet another embodiment of the means for regulating a flow of liquid includes a tube mounted within the basket adjacent to the drain hole, a valve positioned within the tube and seated within the drain hole, and a bimetallic spring attached at a first end to an upper end of the valve and at a second end to a top of the tube. Movement of the spring causes movement of the valve to open or close the drain hole. 
     Yet another embodiment of the means for regulating a flow of liquid includes a tube mounted within the basket adjacent to the drain hole, a bimetallic strip connected at a first end to the wall, and a plug mounted on a second end of the bimetallic strip and positioned within a second drain hole formed in a lower portion of the wall. 
     In another embodiment, the filter basket includes a base having at least one drain hole formed therein; an outer wall connected to and extending from the base; and an inner wall connected to and extending from the base. The inner wall has at least one slot formed therein perpendicular to a plane of the base. The outer wall and inner wall define a channel therebetween and the drain hole formed in the base is in fluid communication with the channel. 
     A method of brewing a beverage is also disclosed including the steps of placing a plurality of beverage flavor elements within a filter basket; dispensing water over the plurality of beverage flavor elements within the filter basket at a predetermined flow rate; providing structure within the filter basket to restrict the flow of water through the filter basket such that a level of water in the basket rises to a predetermined level at which the flow rate of water into the filter basket equals a flow rate of water out of the basket; and continuing dispensing water over the plurality of beverage flavor elements for a predetermined dwell period after the flow rate of water into the filter basket equals the flow rate of water out of the basket. Dispensing the water is continued for a time period in the range of about five minutes to about seven minutes. 
     These and other objects, features and advantages of the present invention will become apparent from the following detailed description of illustrative embodiments, which is to be read in connection with the accompanying drawings. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     For a better understanding of the invention, reference is made to the following description of exemplary embodiments thereof, and to the accompanying drawings, wherein: 
     FIG. 1 is a perspective view illustrating a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 2 is a cut-away perspective view illustrating the coffee maker filter basket with steeping feature of FIG. 1; 
     FIG. 3 is a top plan view illustrating the coffee maker filter basket with steeping feature of FIG. 1; 
     FIG. 4 is a side plan view illustrating the coffee make filter basket with steeping feature of FIG. 1; 
     FIG. 5 is a top perspective view illustrating the coffee make filter basket with steeping feature of FIG. 1; 
     FIG. 6 is a side plan view illustrating the coffee make filter basket with steeping feature of FIG. 1; 
     FIG. 7 is a top perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 8 is a top perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 9 is a cut-away perspective view illustrating the coffee maker filter basket with steeping feature of FIG. 8; 
     FIG. 10 is a top perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 11 is a cut-away perspective view illustrating the coffee maker filter basket with steeping feature of FIG. 10; 
     FIG. 12 is a top perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 13 is a cut-away perspective view illustrating the coffee maker filter basket with steeping feature of FIG. 12; 
     FIG. 14 is a top perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 15 is a top plan view illustrating the coffee maker filter basket with steeping feature of FIG. 14; 
     FIG. 16 is a cut-away perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; 
     FIG. 17 is a partial cut-away perspective view illustrating another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention; and 
     FIG. 18 is a partial cut-away side view illustrating the coffee maker filter basket with steeping feature as shown in FIG.  17 . 
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     The present disclosure describes a novel coffee maker filter basket with a steeping feature that automatically ensures that the coffee grounds within the filter basket will be properly steeped to provide a rich and robust cup of coffee. 
     Referring now in specific detail to the drawings in which like reference numerals identify similar or identical elements throughout the several views, and initially to FIGS. 1 through 6, one embodiment of a novel coffee maker filter basket with a steeping feature constructed in accordance with the present disclosure is shown generally as filter basket  100 . 
     In accordance with the present invention, filter basket  100  includes a substantially conically shaped outer wall  112 , a pair of inner sloped walls  114  which define a longitudinal slot  116  formed therebetween, a protrusion  118  defining a chamber  120  behind sloped walls  114 , and a drain hole  122  formed in the lower portion of protrusion  118 . Filter basket  100  is preferably formed of a plastic material capable of withstanding the temperature of the hot water entering the basket. The temperature of the hot water is preferably between 195 and 205 degrees Fahrenheit and may be up to approximately 212 degrees Fahrenheit. 
     A first end  124  of outer wall  112  defines a relatively large inlet opening  126  for receiving a filter and coffee grounds (not shown). Hot water in either a stream or spray is then dispersed from a heating element within a coffee maker (not shown) over the coffee grounds to extract the coffee flavor from the coffee grounds. A second end  128  of outer wall  112  is continuous with the exception of drain hole  122 . 
     In accordance with the present invention, the width of slot  116  is designed such that when the hot water first enters basket  100 , the flow of hot water through the basket is restricted and therefore begins filling basket  100  from the bottom up. As the water level within basket  100  rises, the amount of water draining through slot  116  increases. Initially, since the flow rate of water entering basket  100  is greater than the flow rate of water that is able to pass through the area of the opening of slot  116 , the water level continues to rise within basket  100 . Eventually as the water level within the basket rises, more and more of the opening of slot  116  is exposed to the water, thereby allowing more water to flow through slot  116 . Ultimately, the flow rate of water through slot  116  will equal the flow rate of water into basket  100  and a predetermined desired water level will be maintained within the basket. Thus, the size of the opening created by slot  116  is designed to maintain a desired water level at which equilibrium between the inlet and outlet water flows is finally reached. 
     By continuing to add water into basket  100 , a dwell period is created and maintained within basket  100  wherein the coffee grounds will be immersed in a given quantity of water. That is, the restriction created by slot  116  will cause the coffee grounds to soak within a given volume of water for a definite period of time. Thus, the coffee grounds will be properly steeped resulting in a rich and robust cup of coffee. 
     The volume of water within basket  100  at the equilibrium point is a function of the flow rate entering the basket and the dimensions of the slot  116 . By performing tests with a predetermined quantity of coffee grounds and a predetermined volume of water, various dwell periods may be plotted graphically as the amount of extracted solids in solution (expressed as a percentage) as a function of the total amount of solids extracted (expressed as ounces per pound) to indicate dwell periods resulting in weak, ideal or strong tasting coffee. The tests can also indicate whether the coffee tastes bitter or is properly developed. By knowing factors such as the flow rate of water into the filter basket, the quantity of coffee grounds within the basket, the size of the basket, and the desired coffee taste, the slot  116  in basket  100  may be designed to achieve a coffee with the desired coffee taste. 
     To brew a rich and robust carafe of coffee, the dwell period is in the range of about three minutes to about seven minutes while a preferred dwell period is in the range of about five minutes to about seven minutes. Therefore, if the total time to brew a carafe of coffee takes eight to ten minutes, the slot should be sized such that equilibrium between the volume of water entering the basket and the volume of water exiting the basket is reached in approximately three minutes. 
     Walls  114  are connected to an inner surface of outer wall  112  and, in conjunction with protrusion  118 , define chamber  120 . Therefore, as the water flows through slot  116 , which is defined by walls  114 , it empties into chamber  120 . Drain hole  122  is provided in the lower portion of protrusion  118  to drain all of the water that enters chamber  120 . The water that exits through drain hole  122  will include the coffee flavor and will drain into a carafe or cup (not shown) positioned below the hole. 
     Referring now to FIG. 7, another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention is illustrated. In this embodiment, a means for regulating the flow of water through basket  100  is provided by vertical wall  130 . As shown, vertical wall  130  defines a slot  132  and a weep hole  134 . 
     Slot  132  extends downward from a top edge of vertical wall  130  and terminates at a predetermined location below the top edge. The length of slot  132  may vary depending on a particular application or desired result. In a preferred embodiment, slot  132  will terminate at a height within basket  100  which corresponds to the level required to brew four cups of coffee. 
     Weep hole  134  is positioned in the bottom section of wall  130 . The purpose of weep hole  134  is two-fold. First, it permits all of the liquid within basket  100  to drain out of the basket into the area behind wall  130 . Second, weep hole  134  restricts the flow of liquid which enters the basket to create a dwell period so that the coffee grounds within the basket are properly steeped. The configuration of the means for restricting the flow of fluid through basket  100  illustrated in FIG. 7 advantageously causes the coffee to back up quickly to a height corresponding to a four cup setting. 
     FIGS. 8 and 9 illustrate yet another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention. FIGS. 8 and 9 illustrate a coffee maker filter basket having an adjustable means for restricting the flow of liquid through the basket to create a dwell period. More specifically, a vertical tube  140  is mounted above drain hole  122 . Vertical tube  140  has a longitudinal slot  142  formed therein. Slot  142  is exposed to liquid which enters basket  100  and communicates that liquid through drain hole  122 . A lower end of vertical tube  140  is preferably molded to the bottom of outer wall  112  around the perimeter of drain hole  122 . 
     To further restrict the flow of liquid exiting basket  100  through drain hole  122 , a hollow cylindrical rod  144  is positioned within vertical tube  140 . Rod  144  has a knurled first end  146  to assist the user when rotating the rod to make adjustments to the flowrate of fluid leaving basket  100 , as will be discussed in further detail below. A plurality of longitudinal slots  148  of varying length are formed in rod  144 . The fit between rod  144  and vertical tube  140  creates a seal so that fluid will not flow between the two tubular walls and will only flow through slots  142  and  148 . Alternatively, rod  140  may be configured to accept one or more o-rings to provide a seal between the outer circumference of rod  144  and the inner surface of tube  140 . 
     As discussed above, rod  144  includes a plurality of longitudinal slots  148 . To facilitate adjustment of the dwell period and thus the steeping process, the user simply rotates rod  144  in the direction of arrows A—A until a slot  148  having the desired length is aligned with slot  142 . Therefore, liquid within basket  100  will flow through slot  142  and through slot  148  as indicated by arrows B (see FIG.  9 ). A longer slot  148  will result in a shorter dwell period and vice versa. Rod  144  also includes a hole  150  adjacent to the first knurled end  146 . Hole  150  functions as an overflow hole once basket  100  is filled to the desired level for steeping the measured amount of grounds. Thus, if the liquid within basket  100  exceeds a predetermined level, it will flow into hole  150  as indicated by arrow C. 
     Referring now to FIGS. 10 and 11, there is shown another embodiment of a coffee maker filter basket with a steeping feature in accordance with the present invention. A vertical wall  152  positioned within filter basket  100  has a longitudinal slot  154  formed in a lower portion thereof. A bimetallic strip  156  is positioned adjacent to and behind wall  152 . When not in use, strip  156  substantially seals the opening formed by slot  154 . Since slot  154  is initially sealed by strip  156 , when water is added to basket  100  the basket will fill up at a rate which is equivalent to the flow rate of the water entering the basket. However, when the basket begins to flow over wall  152 , the overflowing liquid will contact the thermally sensitive strip  156  and cause strip  156  to bend away from slot  154 , thus leaving slot  154  unrestricted. The fluid within basket  100  will then begin to flow through slot  154  until a desired equilibrium level within the basket is achieved. 
     FIGS. 12 and 13 illustrate yet another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention. FIGS. 12 and  13  illustrate a coffee maker filter basket having an automatic means for restricting the flow of liquid through the basket and creating a dwell period within the basket. More specifically, a vertical tube  160  is mounted above drain hole  122 . A lower end of vertical tube  160  is preferably molded to the bottom of outer wall  112  around the perimeter of drain hole  122 . A hole  162  is formed in the lower end of tube  160 . A valve  164  is positioned within tube  160  with an end of valve  164  positioned within drain hole  122  to prevent any liquids from flowing through drain hole  122  via hole  162 . 
     A helical bimetallic spring  166  is connected at a first end to the top of valve  164  and at a second end to the top edge of tube  160 . When liquid first enters basket  100  it is prevented from flowing through the drain hole  122  by valve  164 . However, as the water level rises and contacts spring  166 , spring  166  extends upwards thereby forcing valve  164  upward and opening drain hole  122 . The dimensions of hole  162  and drain hole  122  will determine the flow rate of liquid through the basket and therefore the height at which equilibrium will be reached within basket  100 . 
     FIGS. 14 and 15 illustrate yet another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention. Filter basket  100  as illustrated in FIGS. 14 and 15 has many of the features shown in the embodiment shown in FIGS. 1 through 6 including a substantially conically shaped outer wall  112 , a pair of inner sloped walls  114  which define a longitudinal slot  116  formed therebetween, a protrusion  118  defining a chamber  120  behind sloped walls  114 , and a drain hole  122  formed in the lower portion of protrusion  118 . However, in this embodiment, the pair of inner sloped walls  114  are staggered from front to back to created the slot  116  therebetween. 
     In accordance with the present invention, the distance that the walls  114  are staggered determines the width of slot  116 . As discussed above with reference to FIGS. 1-6, the restriction created by slot  116  will cause the coffee grounds to soak within a given volume of water for a definite period of time. Thus, the coffee grounds will be properly steeped resulting in a rich and robust cup of coffee. 
     Walls  114  are connected to an inner surface of outer wall  112  and, in conjunction with protrusion  118 , define chamber  120 . Therefore, as the water flows through slot  116 , which is defined by walls  114 , it empties into chamber  120 . Drain hole  122  is provided in the lower portion of protrusion  118  to drain all of the water that enters chamber  120 . The water that exits through drain hole  122  will include the coffee flavor and will drain into a carafe or cup (not shown) positioned below the hole. 
     FIG. 16 illustrates yet another embodiment of a coffee maker filter basket with steeping feature in accordance with the present invention. FIG. 16 illustrates a coffee maker filter basket having an automatic means for restricting the flow of liquid through the basket and creating a dwell period within the basket. More specifically, a vertical overflow tube  170  is mounted above drain hole  172 . A lower end of vertical overflow tube  170  is preferably molded around the perimeter of drain hole  172 . 
     A bimetallic strip  176  is connected at a first end to a side of basket  100  adjacent to drain hole  172 . A plug  174  is mounted on a second end portion of bimetallic strip  176 . Plug  174  is sized and dimensioned to fit within a drain hole  178  formed in a central portion of a bottom of basket  100 . 
     When liquid first enters basket  100  it is prevented from flowing through the drain hole  178  by plug  174  which is held in place by bimetallic strip  176 . As the liquid level rises within basket  100 , it will eventually begin to overflow into overflow tube  170 . When the hot liquid flows over the top of overflow tube  170 , it will drain down through drain hole  172  and contact bimetallic strip  176 . As bimetallic strip  176  is heated, it will expand differentially thereby causing plug  174  to be removed from hole  178 . Once plug  174  is removed from hole  178 , the liquid within basket  100  will be able to flow out of the basket and into a carafe or cup. 
     Referring now to FIGS. 17 and 18, there is shown an alternative embodiment of the coffee maker filter basket  200  with a steeping feature in accordance with the present invention. Basket  230  is illustrated in a circular configuration, however it is contemplated that basket  230  may be configured in other configurations such as conical or square. Basket  230  includes an outer wall  232 , an inner wall  234 , and a base  236 . Each of the outer wall  232  and inner wall  234  extend substantially perpendicular from base  236 . Also, each of the outer wall  232  and inner wall  234  have a circular cross-section. However, the diameter of inner wall  234  is less than the diameter of outer wall  232  such that a channel  238  having a circular cross-section is defined between inner wall  234  and outer wall  232 . At least one vertical slot  240  is formed in inner wall  234  such that water that enters the area defined by inner wall  234  will flow through slot  240  and into channel  238 . In order to drain channel  238 , at least one hole  242  is formed in base  236  adjacent to channel  238 . 
     Accordingly, as illustrated in FIG. 18, filter  244  and coffee grounds  246  are placed within basket  230  within the portion defined by inner wall  234 . Hot water is then dispensed over the coffee grounds  246  at a given flow rate. The water level will begin to rise within the portion of basket  230  defined by inner wall  234  since until enough of slot  240  is in contact with the water such that the flow rate of water entering the basket equals the flow rate of water through slot  240 . Thus, as discussed above with reference to FIGS. 1 through 6, an equilibrium point will be reached at a given level of water. After the water passes over the coffee grounds and drains through slot  240 , it will enter channel  238  where it will then drain through holes  242  and into a carafe or cup. 
     Although the illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, it is to be understood that the invention is not limited to those precise embodiments, and that various other changes and modifications may be affected therein by one having ordinary skill in the art without departing from the scope or spirit of the invention. For example, although the invention was described with reference to the application of hot water to coffee grounds, the invention may be used to brew other beverages (hot or cold) such as tea. It is also contemplated that the shape and size of the basket may vary to fit a particular filter or coffee maker configuration. All such changes and modifications are intended to be included within the scope of the invention as defined by the appended claims.