Abstract: A fluid-filtering apparatus includes an upper cartridge and a lower cartridge. The upper cartridge includes a fluid-filtering first tube that surrounds and extends along an axis and that defines a first-tube cavity. An axially-extending fluid-filtering second tube is located within the first-tube cavity and defines a second-tube cavity. The lower cartridge includes an axially-extending third tube that defines a third cavity. An axially-extending fluid-filtering fourth tube, of the lower cartridge, is located within the third cavity and defines a fourth-tube cavity. The upper and lower cartridges are coupled together and contained within a casing.

Abstract: A fluid-filtering apparatus includes an upper cartridge and a lower cartridge. The upper cartridge includes a fluid-filtering first tube that surrounds and extends along an axis and that defines a first-tube cavity. An axially-extending fluid-filtering second tube is located within the first-tube cavity and defines a second-tube cavity. The lower cartridge includes an axially-extending third tube that defines a third cavity. An axially-extending fluid-filtering fourth tube, of the lower cartridge, is located within the third cavity and defines a fourth-tube cavity. The upper and lower cartridges are coupled together and contained within a casing.

Abstract: A fluid-filtering apparatus includes an upper cartridge and a lower cartridge. The upper cartridge includes a permeable fluid-filtering first tube that surrounds and extends along an axis and that defines a first-tube cavity. An axially-extending permeable fluid-filtering second tube is located within the first-tube cavity and defines a second-tube cavity. The lower cartridge includes an axially-extending impermeable third tube that defines a third cavity. An axially-extending permeable fluid-filtering fourth tube, of the lower cartridge, is located within the third cavity and defines a fourth-tube cavity. The upper and lower cartridges are coupled together and contained within an impermeable casing.

Abstract: A fluid-filtering apparatus includes an upper cartridge and a lower cartridge. The upper cartridge includes a permeable fluid-filtering first tube that surrounds and extends along an axis and that defines a first-tube cavity. An axially-extending permeable fluid-filtering second tube is located within the first-tube cavity and defines a second-tube cavity. The lower cartridge includes an axially-extending impermeable third tube that defines a third cavity. An axially-extending permeable fluid-filtering fourth tube, of the lower cartridge, is located within the third cavity and defines a fourth-tube cavity. The upper and lower cartridges are coupled together and contained within an impermeable casing.

Abstract: A bed pillow is made of elastic foam material. The pillow's top surface extends along both a longitudinal direction and a lateral direction that are mutually perpendicular, follows a top undulating pattern in the longitudinal direction, and is uniform in the lateral direction. The pillow's bottom surface is opposite the top surface, follows a bottom undulating pattern in the longitudinal direction, and is uniform in the lateral direction. The pillow's front surface and a rear surface extend from the top surface to the bottom surface, and are uniform in the lateral direction. The pillow has two laterally-opposite parallel planar side surfaces that extend from the top surface to the bottom surface and extend from the front surface to the rear surface.

Abstract: A mattress core has front and rear ends that are spaced apart in a longitudinal direction and further has opposite sides that are spaced apart in a lateral direction. The core includes a firmer lower core section having a top surface that follows an undulating pattern. The undulating pattern is non-uniform and non-symmetric in the longitudinal direction, is uniform in the lateral direction, and includes at least one hill, at least one valley and at least one plateau. The core further includes a softer upper core section that overlies the lower core section. The upper core section has a bottom surface that follows the undulating pattern and contacts the lower core section's top surface to provide a common mating interface that follows the undulating pattern. The interface includes at least one hill, at least one valley and at least one plateau.

Abstract: A knob assembly for a cooking pan lid that includes an improved visual and/or audible indicator of temperature conditions within the pan.