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A bottle stopper is provided having a cylindrical body formed of a resilient, flexible, elastic material that includes a first cylindrical section adapted to be inserted into an opening of a bottle in sealing engagement with the bottle and a second cylindrical section disposed adjacent the first cyl

A bottle stopper is provided having a cylindrical body formed of a resilient, flexible, elastic material that includes a first cylindrical section adapted to be inserted into an opening of a bottle in sealing engagement with the bottle and a second cylindrical section disposed adjacent the first cylindrical section for extending above the opening of the bottle when the first cylindrical section is inserted in sealing engagement with the bottle. An air passageway is disposed adjacent and extends longitudinally along substantially at least the length of the first cylindrical section and along the internal periphery of the cylindrical body. A visual indicator, preferably a spout, is disposed on an outer surface of the second cylindrical section for identifying the relative location of the air passageway with respect to the visual indicator.

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1. A pouring device for use with a bottle having a liquid therein, comprising: a cylindrical body formed of a flexible, elastic, resilient material and having a lower portion terminating at a first end, and an upper portion terminating at a second end,the lower portion having a length and adapted to

1. A pouring device for use with a bottle having a liquid therein, comprising: a cylindrical body formed of a flexible, elastic, resilient material and having a lower portion terminating at a first end, and an upper portion terminating at a second end,the lower portion having a length and adapted to be inserted into an opening of a bottle in sealing engagement with the bottle andthe upper portion having a length, a height and a substantially circular interior cross-sectional shape and disposed adjacent the lower portion for extending above the opening of the bottle when the lower portion is inserted in sealing engagement with the bottle;a filter including a pour opening composed of a plurality of substantially uniformly disposed apertures, the pour opening extending across substantially an entire substantially circular cross section of the cylindrical body;an air passageway disposed adjacent to the internal periphery of said lower portion and extending longitudinally beyond the length of said lower portion in a direction away from said upper portion along the internal periphery of said cylindrical body, a portion of the air passageway overlapping the whole length of said filter in the longitudinal direction, the air passageway and the filter being comprised in a unitary body; anda visual indicator disposed on an outer surface of said upper portion for identifying the relative angular location of said air passageway with respect to said visual indicator;the cylindrical body extending above and surrounding the uniformly disposed apertures and the air passageway such that the shape of the upper portion is adapted to permit sealing the liquid in the bottle from the atmosphere by a cylindrical longitudinal extent of a cap insertable into the interior of the upper portion to close both the apertures of the filter and the air passageway to the atmosphere. 2. The device of claim 1 wherein said visual indicator is positioned adjacent the second end and on the upper portion of said cylindrical body. 3. The device of claim 1 wherein said visual indicator comprises a V-shaped pouring spout located on the upper portion. 4. The device of claim 3 wherein said spout comprises a mouth extending outwardly past the cylindrical body and having a slope of about 50 degrees relative to said cylindrical body. 5. The device of claim 3 wherein said visual indicator is angularly spaced from said air passageway by at least 120°. 6. The device of claim 5 wherein said visual indicator is angularly spaced from said air passageway about 180°. 7. The device of claim 3 wherein the plurality of apertures each have an interior cross-sectional dimension of about 0.04 inches or less, and wherein said filter is disposed within and integrally formed within said cylindrical body. 8. The device of claim 7 wherein the filter is of the same material as the cylindrical body. 9. The device of claim 3 further comprising an attached cap insertable at the second end in sealing engagement with the interior of the upper portion of said cylindrical body, said attached cap having a cylindrical overlapping longitudinal extent that overlaps with the second end when in sealing engagement the interior of the upper portion, said attached cap being attached to an upper portion of said cylindrical body by a strand of flexible material extending from the cylindrical body to the cap, and wherein the spout has a longitudinal extent less than the overlapping longitudinal extent of the attached cap, the strand extending from the upper portion of the cylindrical body being the visual indicator for identifying the relative angular location of said air passageway. 10. The device of claim 9, further comprising an integral circumferential sealing ring on one of the cap and the interior of the cylindrical body and, on the other of the cap and cylindrical body, a circumferential sealing groove complementary to the sealing ring, the spout being located above the circumferential sealing ring and groove when the cap is inserted into the interior of the upper portion to align the circumferential sealing ring and groove. 11. The device of claim 10 wherein the circumferential sealing ring is on the cap. 12. The device of claim 9 wherein the cap is attached to said cylindrical body by a flexible, elongated, cylindrical strand of material having an at least substantially uniform and at least substantially circular cross section, extending from the cylindrical body to the cap at a predetermined location on the circumference of the cylindrical body. 13. The device of claim 12, wherein: the air passageway is angularly spaced 180° from the spout;the strand is attached to the cylindrical body at a first end of the strand at a location angularly spaced 180° from the spout;the strand is attached to the cap at a second end of the strand;when the cap is inserted in sealing engagement with the interior of the second end of the cylindrical body, the first and second ends of the strand are spaced apart from each other a distance of about the height of the upper portion in a generally longitudinal direction; andwhen liquid is poured from a bottle in which the device is inserted, the strand is of sufficient thickness and rigidity to prevent the strand and cap from hanging in the path where liquid is being poured from the bottle. 14. The device of claim 13, the height of the upper portion being about 0.75 inch. 15. The device of claim 9 wherein the cap is integrally attached to the cylindrical body. 16. The device of claim 15 wherein the cap is integrally attached to the cylindrical body by a flexible, elongated, cylindrical strand of material. 17. The device of claim 12 wherein the attachment of the cylindrical strand at a predetermined location on the cylindrical body. 18. The device of claim 12 wherein the predetermined location is angularly spaced at least about 120° from the spout. 19. The device of claim 1 wherein said visual indicator comprises a protuberance. 20. The device of claim 1 wherein said visual indicator comprises a marking having a color different from the color of said cylindrical body. 21. The device of claim 1 wherein said air passageway is substantially encircled by said plurality of apertures. 22. The device of claim 1, the lower portion further adapted to be inserted in a longitudinal direction into the opening of a wine bottle and further comprising a circumferential sealing ring adapted to deform to provide sealing engagement with the wine bottle. 23. A method of pouring a liquid from a bottle comprising: inserting a pouring device into a bottle, said pouring device comprising:a cylindrical body formed of a flexible, elastic, resilient material and having a lower portion at a first end, and an upper portion at a second end,the lower portion having a length and adapted to be inserted into an opening of a bottle in sealing engagement with the bottle andthe upper portion having a length and a substantially circular interior cross-sectional shape and disposed adjacent the lower portion for extending above the opening of the bottle when the lower portion is inserted in sealing engagement with the bottle;a filter including a pour opening composed of a plurality of substantially uniformly disposed apertures, the pour opening extending across substantially an entire substantially circular cross section of the cylindrical body;an air passageway disposed adjacent to the internal periphery of said lower portion and extending longitudinally beyond the length of said lower portion in a direction away from said upper portion along the internal periphery of said cylindrical body, a portion of the air passageway overlapping the whole length of said filter in the longitudinal direction, the air passageway and the filter being comprised in a unitary body; anda visual indicator disposed on an outer surface of said upper portion for identifying the relative angular location of said air passageway with respect to said visual indicator;the cylindrical body extending above and surrounding the uniformly disposed apertures and the air passageway such that the shape of the upper portion is adapted to permit sealing the liquid in the bottle from the atmosphere by a cylindrical longitudinal extent of a cap insertable into the interior of the upper portion to close both the apertures of the filter and the air passageway to the atmosphere;verifying a location on said cylindrical body of said visual indicator and the relative location of said air passageway relative to said visual indicator;orienting the bottle so that when the bottle is tilted in a downward direction for pouring the air passageway will be in a relatively upward facing position; andpouring contents from said bottle by tilting the bottle in the downward direction such that the air passageway of said bottle stopper device is maintained in a relatively upward facing position. 24. The method according to claim 23 wherein the verifying a location on said cylindrical body includes verifying the location of a spout. 25. The method according to claim 23 wherein said air passageway is substantially encircled by said plurality of apertures. 26. A method for manufacturing a pouring device for use with a bottle comprising: integrally forming the pouring device by:forming a cylindrical body formed of a flexible, elastic, resilient material and having a lower portion at a first end, and an upper portion at a second end;forming the lower portion with a length, the lower portion adapted to be inserted into an opening of a bottle in sealing engagement with the bottle;forming the upper portion with a length and a substantially circular interior cross-sectional shape and disposing the upper portion adjacent the lower portion such that the upper portion extends above the opening of the bottle when the lower portion is inserted in sealing engagement with the bottle;forming the cylindrical body with a filter including a pour opening composed of a plurality of substantially uniformly disposed apertures, the pour opening extending across substantially an entire substantially circular cross section of the cylindrical body;forming an air passageway disposed adjacent the internal periphery of said lower portion and extending longitudinally along substantially at least the length of said lower portion and along the internal periphery of said cylindrical body, a portion of the air passageway being integrally formed with and at least coextensive with said filter in the longitudinal direction;forming a visual indicator disposed on an outer surface of said upper portion for identifying the relative angular location of said air passageway with respect to said visual indicator;integrally forming a cap having a cylindrical longitudinal extent adapted to be inserted into the lower portion to seal both the air passageway and the apertures of the filter to the atmosphere and a longitudinally elongated strand of flexible material that are connected to the upper portion of the cylindrical body by the strand; andintegrally forming a V-shaped spout connected to the upper portion of the cylindrical body and wherein the strand is an elongated cylindrical strand and is connected to the body at a location angularly spaced from the spout. 27. The method according to claim 26 wherein forming said visual indicator includes providing the spout. 28. The method according to claim 26 wherein said air passageway is substantially encircled by said plurality of apertures. 29. The method of claim 26 wherein the radial spacing of the strand from the spout is 180°. 30. The method of claim 26 wherein the radial spacing of the strand from the spout is 90°. 31. The method of claim 26 wherein the radial spacing of the strand from the spout is 120°. 32. The method of claim 26, wherein: the strand is attached to the cylindrical body at a first end of the strand;the strand is attached to the cap at a second end of the strand;when the cap is inserted in sealing engagement with the interior of the second end of the cylindrical body, the first and second ends of the strand are spaced apart from each other in a generally longitudinal direction with respect to the cylindrical body, and the strand extends in a generally circular arc from the first end of the strand to the second end of the strand. 33. The method of claim 26 wherein the spout has a rim that lies at least substantially in a horizontal plane; and the cap further including a radially extending, generally planar tab adapted to overlap the rim of the spout to close the spout to the atmosphere when the cap is inserted in sealing engagement with the interior of the second end of the cylindrical body. 34. The method of claim 33, the rim of the spout being at least substantially coplanar with the second end, further comprising forming on the cap a circumferential shoulder at least substantially coplanar with the tab, the circumferential shoulder overlapping the second end when the tab overlaps the rim of the spout to close the second end to the atmosphere. 35. The method of claim 26, the strand having an at least substantially uniform and at least substantially circular cross section. 36. The method of claim 26, further comprising forming the entire device by injection molding. 37. The method of claim 26, further comprising forming on the lower portion a first circumferential sealing ring adapted to be deformed to provide sealing engagement with the interior of a wine bottle when the device is inserted into the wine bottle. 38. The method of claim 37, further comprising forming on the lower portion a second circumferential sealing ring adapted to be deformed to provide sealing engagement with the interior of a wine bottle when the device is inserted into the wine bottle, the second circumferential sealing ring longitudinally spaced apart from the first circumferential sealing ring. 39. The method of claim 26, further comprising forming on the cylindrical body a circumferential shoulder adapted to abut the top edge of a wine bottle into which the lower portion is inserted to visually indicate that the lower portion is inserted into the wine bottle. 40. A pouring device for use with a bottle having a liquid therein, comprising: a body formed of a flexible, elastic, resilient material and having a lower portion terminating at a lower end, and an upper portion terminating at an upper end, the lower portion having a length and adapted to be inserted into an opening of a bottle in sealing engagement with the bottle and the upper portion having a length, a height and a substantially circular interior cross-sectional shape and disposed adjacent the lower portion for extending above the opening of the bottle when the lower portion is inserted in sealing engagement with the bottle;a pour spout at the upper end of the upper portion, the pour spout located at a distinct location at the upper end of the upper portion and comprising a part of an outer surface of the upper portion that is sloped relative to another part of the outer surface of the upper portion disposed below the spout;a pouring passageway extending longitudinally through the interior of the body;an air passageway disposed adjacent to the internal periphery of said lower portion and extending along the internal periphery of said body at least to the lower end of said body;an attached cap having a longitudinal portion insertable into the interior of the upper portion, the cap configured to seal the liquid in the bottle and close the air passageway to the atmosphere when the longitudinal portion is inserted, and the cap including a peripheral flange contacting and overlapping at least substantially the entire upper end of the upper portion when the cap is inserted into the interior of the upper portion to close the upper portion to the atmosphere; anda connecting member having a flexible portion, the connecting member attached at a first end to the cap and at a second end to the body, the end of the member attached to the body and being located at approximately the angular position of the air passageway, at an opposite side of the body from the pour spout, and in line with a pouring direction extending through the air passageway toward the pour spout, to provide a visual indicator of the position of the air passageway and the pouring direction. 41. The pouring device of claim 40, the insertable longitudinal portion of the cap being generally cylindrical and the pour spout having a sharp leading edge comprising a portion of the upper end. 42. The pouring device of claim 40, the body further comprising a circumferential shoulder at an upper end of the lower portion, and a sealing ring disposed on the outer surface of the lower portion, the circumferential shoulder adapted to abut the top edge of a wine bottle into which the lower portion is inserted, the sealing ring located below the shoulder portion and adapted to deform to sealingly engage an interior surface of a wine bottle into which the lower portion is inserted, at least a portion of each of the cap, connecting member, shoulder portion, and sealing ring being comprised in an integrally formed body of resilient material. 43. The pouring device of claim 40, the body further comprising a circumferential shoulder at an upper end of the lower portion, and a plurality of sealing rings longitudinally spaced apart and disposed on the outer surface of the lower portion, the circumferential shoulder adapted to abut the top edge of a wine bottle into which the lower portion is inserted, the sealing rings located below the shoulder portion and adapted to deform to sealingly engage an interior surface of a wine bottle into which the lower portion is inserted, at least a portion of each of the cap, connecting member, shoulder portion, and sealing rings being an integral body of resilient material. 44. The pouring device of claim 40, the pour spout defining an outwardly inclined pour channel terminating adjacent a sharp leading edge of the pour spout, the insertable longitudinal portion of the attached cap extending below a lowest extent of the pour spout when the cap is inserted into the interior of the upper portion, to seal the pour spout from an interior volume of a bottle into which the lower portion of the device is inserted. 45. The device of claim 40 wherein said visual indicator is positioned adjacent the second end and on the upper portion of said body. 46. The device of claim 40 wherein said pour spout is V-shaped. 47. The device of claim 40 further comprising a filter including a pour opening composed of a plurality of substantially uniformly disposed apertures, the pour opening extending across substantially an entire substantially circular cross-section of the body. 48. The device of claim 47 wherein the plurality of apertures each have an interior cross-sectional dimension of about 0.04 inches or less, and wherein said filter is disposed within and integrally formed within said body. 49. The device of claim 48 wherein the filter is of the same material as the body. 50. A pouring device for use with a bottle having a liquid therein, comprising: a body formed of a flexible, elastic, resilient material and having a lower portion terminating at a lower end, and an upper portion terminating at an upper end, the lower portion having a length and adapted to be inserted into an opening of a bottle in sealing engagement with the bottle and the upper portion disposed adjacent the lower portion for extending above the opening of the bottle when the lower portion is inserted in sealing engagement with the bottle;a pouring passageway extending longitudinally through the interior of the body;an air passageway disposed adjacent to the internal periphery of said lower portion and extending along the internal periphery of said body at least to the lower end of said body;a pour spout at the upper end of the upper portion, the pour spout located at a distinct location at the upper end of the upper portion and comprising a part of an outer surface of the upper portion that is sloped at an acute angle relative to the horizontal plane when the lower portion is inserted into the opening of the bottle and the bottle is upright;an attached cap having a longitudinal portion insertable into the interior of the upper portion, the cap configured to seal the liquid in the bottle and close the air passageway to the atmosphere when the longitudinal portion is inserted, and the cap including a peripheral flange contacting and overlapping at least substantially an entire upper rim of the upper portion, the upper rim of the upper portion including an upper rim of the pour spout lying at least substantially in a horizontal plane when the lower portion is inserted into the opening of the bottle, when the cap is inserted into the interior of the upper portion to close the upper portion to the atmosphere; anda connecting member having a flexible portion, the connecting member attached at a first end to the cap and at a second end to the body, the end of the member attached to the body and being located at approximately the angular position of the air passageway, at an opposite side of the body from the pour spout, and in line with a pouring direction extending through the air passageway toward the pour spout, to provide a visual indicator of the position of the air passageway and the pouring direction. 51. The pouring device of claim 50, the insertable longitudinal portion of the cap being generally cylindrical. 52. The pouring device of claim 50, the body further comprising a circumferential shoulder at an upper end of the lower portion, and at least one sealing ring disposed on the outer surface of the lower portion, the circumferential shoulder adapted to abut the top edge of a wine bottle into which the lower portion is inserted, the sealing ring located below the shoulder portion and adapted to deform to sealingly engage an interior surface of a wine bottle into which the lower portion is inserted, at least a portion of each of the cap, connecting member, shoulder portion, and sealing ring being comprised in an integrally formed body of resilient material. 53. The pouring device of claim 50 wherein the at least one sealing ring comprises a plurality of longitudinally spaced apart sealing rings. 54. The pouring device of claim 50 wherein the pour spout protrudes radially from the upper end of the upper portion. 55. The pouring device of claim 50, the pour spout having a sharp leading edge comprising a portion of the upper end.