Cigarette with controlled smoking profile

Claim 2

In an elongated smoking article which includes a cylinder of tobacco, and a cylindrical wrapping of combustible material closely enclosing said tobacco cylinder and being longitudinally coextensive with said tobacco cylinder, said smoking article having opposite ends constituting, respectively, a mouth end and a smoking end, a strip of combustible material having a plurality of separate elongated channels formed therein secured to said wrapping, said channels defining with said wrapping a corresponding plurality of separate ventilation passages extending longitudinally of said wrapping, said ventilation passages extending in one direction to outlet at the mouth end of said article and in an opposite direction toward the smoking end of said article, unblockable blocking means in each ventilation passage at a location spaced a predetermined distance from the smoking end of said article, the blocking means in each ventilation passage being spaced at a predetermined distance from the smoking end of said article which is different than the spacing of the blocking means in any other ventilation passage from said smoking end, said blocking means being rendered unblocked responsive to smoking of said article, said ventilation passages being communicated with atmosphere when said tobacco cylinder has been smoked to the location of the blocking means therein whereby ventilating streams of air are thereafter drawn through said ventilation passages concurrently with puffing of said article during continued smoking of the same.

Claim 3

The smoking article of claim 1 wherein said cylindrical wrapping has a generally smooth inner surface, said strip of combustible material being secured to said smooth inner surface.

Claim 4

The smoking article of claim 1 wherein said cylindrical wrapping has a generally smooth outer surface, said strip of combustible material being secured to said smooth outer surface.

Claim 5

The smoking article of claim 1 wherein said strip of combustible material and the elongated channels therein are longitudinally coextensive with said cylindrical wrapping.

Claim 6

The smoking article of claim 1 wherein said strip of combustible material and the elongated channels therein extend longitudinally of said cylindrical wrapping from the mouth end of said article in the direction of the smoking end of said article a distance which is greater than the distance at which the blocking means in each is disposed from said mouth end.

Claim 7

The smoking article of claim 5, wherein said blocking means comprises a crimp formed in the strip material of each channel in said strip of combustible material.

Claim 8

The smoking article of claim 5 wherein said blocking means comprises a solid material disposed in passage blocking disposition in each passage and is selected from one of heat meltable and heat disintegratable materials.

Claim 9

The smoking article of claim 1 wherein said strip of combustible material and the elongated channel therein extend longitudinally of said cylindrical wrapping from the mouth end of said article in the direction of the smoking end of said article a predetermined distance, said channel merging with said wrapping at said predetermined distance to provide said blocking means.

Claim 10

The smoking article of claim 1 wherein the elongated channels formed in said strip of combustible material are substantially arcuate in transverse section configuration.

Claim 11

The smoking article of claim 1 wherein said strip of combustible material is a stiffened paper, said strip being adhesively secured to said cylindrical wrapping.

Claim 12

The smoking article of claim 10 wherein said strip of combustible material is glassine paper.

Claim 13

The smoking article of claim 1 wherein the plurality of channels formed in said strip of combustible material extend longitudinally of said strip from the mouth end of said article in the direction of the smoking end of said article but terminate at locations sPaced from said smoking end, the terminus of each channel being at a distance from said smoking end different than that of any other channel, the terminus of each channel comprising the blocking means of the ventilation passage associated therewith.

Claim 14

A ventilation type cigarette comprising an elongated cylinder of shredded tobacco, a cylindrical wrapping of combustible material closely enclosing said tobacco cylinder and being longitudinally coextensive with said tobacco cylinder, means disposed at one end of said wrapping enclosed tobacco cylinder providing a mouthpiece in said cigarette, said mouthpice having at least one flow through course extending therethrough, a strip of combustible material having a plurality of separate elongated channels formed therein secured to said wrapping, said channels defining with said wrapping a corresponding plurality of separate ventilation passages extending longitudinally of said wrapping and secured to said wrapping, said ventilation passages extending in one direction to outlet at said one end of said wrapping enclosed tobacco cylinder and being in communication with the flow through course in said mouthpiece, said ventilation passages extending in an opposite direction toward the other end of said tobacco cylinder, unblockable blocking means in each ventilation passage disposed therein at a location spaced a predetermined distance from said other end of said tobacco cylinder, the blocking means in each ventilation passage being spaced at a predetermined distance from the smoking end of said article which is different than the spacing of the blocking means in any other ventilation passage from said smoking end, said blocking means being rendered unblocked responsive to smoking of said cigarette, said ventilation passages being communicated with atmosphere when said tobacco cylinder has been smoked to the location of the blocking means therein whereby ventilating streams of air are thereafter drawn through said ventilation passages and said mouthpiece flow through course concurrently with puffing of said article during continued smoking of the same.

Claim 15

A ventilation type cigarette comprising an elongated cylinder of shredded tobacco, a cylindrical wrapping of combustible material closely enclosing said tobacco cylinder and being longitudinally coextensive with said tobacco cylinder, means disposed at one end of said wrapping enclosed tobacco cylinder providing a mouthpiece in said cigarette, said mouthpice having at least one flow through course extending therethrough, a strip of combustible material having a plurality of separate elongated channels formed therein secured to said wrapping, said channels defining with said wrapping a corresponding plurality of separate ventilation passages extending longitudinally of said wrapping and secured to said wrapping, said ventilation passages extending in one direction to outlet at said one end of said wrapping enclosed tobacco cylinder and being in communication with the flow through course in said mouthpiece, said ventilation passages extending in an opposite direction toward the other end of said tobacco cylinder, unblockable blocking means in each ventilation passage disposed therein at a location spaced a predetermined distance from said other end of said tobacco cylinder, the blocking means in each ventilation passage being spaced at a predetermined distance from the smoking end of said article which is different than the spacing of the blocking means in any other ventilation passage from said smoking end, said blocking means being rendered unblocked responsive to smoking of said cigarette, said ventilation passages being communicated with atmosphere when said tobacco cylinder has been smoked to the location of the blocking means therein whereby ventilating streams of air are thereafter drawn through said ventilation passages and said mouthpiece flow through course concurrently with puffing of said article during continued smoking of the same.

Claim 16

In an elongated smoking article which includes a cylinder of tobacco, and a cylindrical wrapping of combustible material closely enclosing said tobacco cylinder and being longitudinally coextensive with said tobacco cylinder, said smoking article having opposite ends constituting, respectively, a mouth end and a smoking end, means forming a plurality of separate ventilation passages extending longitudinally of said wrapping and secured to said wrapping, said ventilation passages extending in one direction to outlet at the mouth end of said article and in an opposite direction toward the smoking end of said article, unblockable blocking means in each ventilation passage at a location spaced a predetermined distance from the smoking end of said article, the blocking means in each ventilation passage being spaced at a predetermined distance from the smoking end of said article which is different than the spacing of the blocking means in any other ventilation passage from said smoking end, said blocking means being rendered unblocked responsive to smoking of said article, said ventilation passages being communicated with atmosphere when said tobacco cylinder has been smoked to the location of said blocking means whereby ventilating streams of air are thereafter drawn through said ventilation passages concurrently with puffing of said article during continued smoking of the same.

Claim 17

In an elongated smoking article which includes a cylinder of tobacco, and a cylindrical wrapping of combustible material closely enclosing said tobacco cylinder and being longitudinally coextensive with said tobacco cylinder, said smoking article having opposite ends constituting, respectively, a mouth end and a smoking end, means forming a plurality of separate ventilation passages extending longitudinally of said wrapping and secured to said wrapping, said ventilation passages extending in one direction to outlet at the mouth end of said article and in an opposite direction toward the smoking end of said article, unblockable blocking means in each ventilation passage at a location spaced a predetermined distance from the smoking end of said article, the blocking means in each ventilation passage being spaced at a predetermined distance from the smoking end of said article which is different than the spacing of the blocking means in any other ventilation passage from said smoking end, said blocking means being rendered unblocked responsive to smoking of said article, said ventilation passages being communicated with atmosphere when said tobacco cylinder has been smoked to the location of said blocking means whereby ventilating streams of air are thereafter drawn through said ventilation passages concurrently with puffing of said article during continued smoking of the same.

Claim 18

The smoking article of claim 1 wherein said cylindrical wrapping has generally smooth inner and outer surfaces, the means forming said ventilation passage comprising a tube of combustible material secured to one of said surfaces.

Claim 19

The smoking article of claim 15 wherein said tube of combustible material is longitudinally coextensive with said cylindrical wrapping.

Claim 20

The smoking article of claim 15 wherein said tube of combustible material extends longitudinally of said cylindriCal wrapping from the mouth end of said article in the direction of the smoking end of said article a distance which is greater than the distance at which said blocking means is disposed from said mouth end.

Claim 21

The smoking article of claim 17, wherein said blocking means comprises a crimp formed in said tube.

Claim 22

The smoking article of claim 17 wherein said blocking means comprises a solid material disposed in said passage.

Claim 23

The smoking article of claim 19 wherein said solid material is one which melts responsive to the presence of heat from the burning coal of the smoking article during smoking of the same.

Claim 24

The smoking article of claim 15 wherein said tube of combustible material is a paper, said tube being adhesively secured to said cylindrical wrapping.