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An applicator for local application of a liquid to a person's skin. The applicator includes a porous dome, a chamber under the dome, a squeeze bottle providing a reservoir containing the liquid, and a tube from the squeeze bottle to the chamber. The porous dome has pores sized to provide liquid tran

An applicator for local application of a liquid to a person's skin. The applicator includes a porous dome, a chamber under the dome, a squeeze bottle providing a reservoir containing the liquid, and a tube from the squeeze bottle to the chamber. The porous dome has pores sized to provide liquid transport therein by capillary action. The chamber provides a location for liquid in position to be transported into dome. Increased pressure in the reservoir from squeezing the bottle causes liquid to flow from the reservoir through the tube to the chamber, and decreased pressure in the reservoir from releasing the bottle causes excess liquid in the chamber to flow from the chamber through the tube to the reservoir. The applicator can include a squeeze bottle having a relatively rigid molded open-end portion connected to a porous dome and an integral flexible, blow-molded reservoir portion that can be squeezed to a reduced volume condition to deliver liquid to the dome and has memory to return to an unsqueezed volume condition.

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An applicator for local application of a liquid to a person's skin. The applicator includes a porous dome, a chamber under the dome, a squeeze bottle providing a reservoir containing the liquid, and a tube from the squeeze bottle to the chamber. The porous dome has pores sized to provide liquid tran

An applicator for local application of a liquid to a person's skin. The applicator includes a porous dome, a chamber under the dome, a squeeze bottle providing a reservoir containing the liquid, and a tube from the squeeze bottle to the chamber. The porous dome has pores sized to provide liquid transport therein by capillary action. The chamber provides a location for liquid in position to be transported into dome. Increased pressure in the reservoir from squeezing the bottle causes liquid to flow from the reservoir through the tube to the chamber, and decreased pressure in the reservoir from releasing the bottle causes excess liquid in the chamber to flow from the chamber through the tube to the reservoir. The applicator can include a squeeze bottle having a relatively rigid molded open-end portion connected to a porous dome and an integral flexible, blow-molded reservoir portion that can be squeezed to a reduced volume condition to deliver liquid to the dome and has memory to return to an unsqueezed volume condition. ection, the cross channel helical path forming a second acute angle with respect to the x-axis that is smaller than the first angle, and further wherein a y-axis extends perpendicular to the x-axis, thereby defining four quadrants with the first and second acute angles being located in the same quadrant, and c) a mixing segment extending along a mixing segment path and positioned within the helical channel of the primary flight, the mixing segment path forming a third acute angle with respect to the x-axis, wherein the first, second, and third angles are in the same quadrant. 2. The mixing section of claim 1, wherein the primary flight includes a side wall that defines the cross channel and is oriented generally parallel to the direction of the cross channel helical path. 3. The mixing section of claim 1, wherein side walls of the cross channel of the primary flight defining the cross channel are each parallel to the direction of the cross channel helical path. 4. The mixing section of claim 1, wherein the third angle is less than the first angle. 5. The mixing section of claim 1, wherein the third angle is less than the second angle. 6. The mixing section of claim 1, wherein the mixing segment is helically wound along the mixing segment path about the longitudinal axis such that the mixing segment path comprises a helical path. 7. The mixing section of claim 1, wherein the third acute angle is different than the first acute angle. 8. A mixing section for a feed screw, the mixing section comprising: a) an elongated body including a length extending along a longitudinal axis, b) a primary flight defining a helical channel and extending from at least a portion of the length of the elongated body, the primary flight helically wound about the longitudinal axis along a primary flight helical path forming a primary flight acute angle with respect to an x-axis that is parallel to the longitudinal axis, the primary flight helical path is helically wound clockwise in a first direction about the longitudinal axis along at least a portion of the length of the mixing section, wherein the first direction is defined as generally extending from one end of the mixing section to another end of the mixing section, the primary flight defining a cross channel to allow fluid communication between adjacent portions of the helical channel, wherein the cross channel is defined along a cross channel helical path about the longitudinal axis, the cross channel helical path is helically wound clockwise in the first direction about the longitudinal axis along at least a portion of the length of the mixing segment, wherein the cross channel helical path forms a cross channel acute angle with respect to the x-axis, and c) a mixing segment extending from the elongated body and extending along a mixing segment path, the mixing segment path forming a mixing segment acute angle with respect to the x-axis that is less than the cross channel acute angle and is different from the primary flight acute angle, and a y-axis extends perpendicular to the x-axis, thereby defining four quadrants with the primary flight acute angle, cross channel acute angle and mixing segment acute angle being located in the same quadrant, wherein the mixing section is adapted to be rotated about the longitudinal axis such that the primary flight may cause movement of material at least primarily in the first direction while the mixing segment may cause at least partial cross flow of material through the cross channel substantially in the first direction. 9. The mixing section of claim 8, wherein an end of the mixing segment is located adjacent the cross channel. 10. The mixing section of claim 8, wherein at least one of the primary flight and mixing segment is adapted to at least substantially prevent reverse cross flow of material through the cross channel in a second direction opposite the first direction. 11. The mixing section of claim 8, wherein the mixing segment is dispos ed within the helical channel. 12. The mixing section of claim 8, wherein the elongated body is generally cylindrical. 13. The mixing section of claim 8, wherein the cross channel acute angle is less than the primary flight acute angle. 14. The mixing section of claim 8, wherein the mixing segment acute angle is less than the primary flight acute angle. 15. The mixing section of claim 8, wherein the mixing segment comprises a plurality of mixing segments. 16. The mixing section of claim 15, wherein the plurality of mixing segments define a mixing flight with a cross channel. 17. The mixing section of claim 16, wherein the primary flight defines a first pitch and the mixing flight defines a second pitch. 18. The mixing section of claim 17, wherein the second pitch is greater than the first pitch. 19. The mixing section of claim 16, wherein the cross channel of the mixing flight overlaps the cross channel of the primary flight. 20. The mixing section of claim 16, wherein a common helical path that is helically wound clockwise in the first direction about the longitudinal axis extends through the cross channel of the primary flight and the cross channel of the mixing flight. 21. The mixing section of claim 16, wherein the mixing segment flight is helically wound along a mixing segment helical path about the longitudinal axis. 22. The mixing section of claim 15, wherein the plurality of mixing segments extend along a mixing segment helical path about the longitudinal axis. 23. The mixing section of claim 8, wherein the mixing segment has a height relative to the elongated body that is less than the height of the primary flight relative to the elongated body. 24. The mixing section of claim 8, wherein the cross channel of the primary flight comprises a plurality of cross channels. 25. The mixing section of claim 24, wherein a plurality of cross channels of the primary flight are defined along a cross channel helical path that is wound about the longitudinal axis. 26. The mixing section of claim 25, wherein the x-axis extends through a plurality of the cross channels of the primary flight. 27. The mixing section of claim 24, wherein the mixing segment comprises a plurality of mixing segments defining a mixing flight, the mixing flight including a plurality of cross channels. 28. The mixing section of claim 27, wherein a plurality of cross channels of the mixing flight overlap a corresponding one of a plurality of cross channels of the primary flight. 29. The mixing section of claim 27, wherein a common helical path is helically wound clockwise in the first direction about the longitudinal axis, the common helical path extends through a plurality of cross channels of the primary and mixing flights. 30. The mixing section of claim 29, wherein the x-axis extends through a plurality of the cross channels of the primary flight and the mixing flight. 31. The mixing section of claim 8, wherein the mixing segment is helically wound along the mixing segment path about the longitudinal axis such that the mixing segment path comprises a helical path. 32. A mixing section for a feed screw comprising: a) a body portion defined along a longitudinal axis and extending in a first direction along the longitudinal axis, b) a primary flight defining a helical channel, wherein the primary flight is helically wound along a primary flight helical path in the first direction about the longitudinal axis, the primary flight helical path forming a first acute angle with respect to an x-axis that is parallel to the longitudinal axis, and the primary flight being helically wound clockwise in the first direction about the longitudinal axis along at least a portion of the length of the mixing section, the primary flight defining a cross channel to allow fluid communication between adjacent portions of the helical channel, wherein the cross channel is defined along a cross channel helical path about the longitudinal axis, the cross channel helical path being helically wound clockwise in the first direction about the longitudinal axis along at least a portion of the length of the mixing section, the cross channel helical path forming a second acute angle with respect to the x-axis that is smaller than the first angle, and further wherein a y-axis extends perpendicular to the x-axis, thereby defining four quadrants, and c) a mixing segment extending along a mixing segment path, the mixing segment path forming a third acute angle with respect to the x-axis, wherein the third acute angle is less than the second acute angle and wherein the first, second, and third acute angles are in the same quadrant. 33. A mixing section for a feed screw comprising: a) a body portion defined along a longitudinal axis and extending in a first direction along the longitudinal axis, b) a primary flight defining a helical channel, wherein the primary flight is helically wound along a primary flight helical path in the first direction about the longitudinal axis, the primary flight helical path forming a first acute angle with respect to an x-axis that is parallel to the longitudinal axis, and the primary flight being helically wound clockwise in the first direction about the longitudinal axis along at least a portion of the length of the mixing section, the primary flight defining a cross channel to allow fluid communication between adjacent portions of the helical channel, wherein the cross channel is defined along a cross channel helical path about the longitudinal axis, the cross channel helical path being helically wound clockwise in the first direction about the longitudinal axis along at least a portion of the length of the mixing section, the cross channel helical path forming a second acute angle with respect to the x-axis that is smaller than the first angle, and further wherein a y-axis extends perpendicular to the x-axis, thereby defining four quadrants with the first and second acute angles being located in the same quadrant, and c) a mixing segment extending along a mixing segment path and positioned in the helical channel of the primary flight and arranged at a third acute angle with respect to the x-axis, wherein the third acute angle is different than the first acute angle.