Device for controlling free-burn rate of and reducing sidestream smoke from a cigarette and the like

摘要

PCT No. PCT/CA96/00041 Sec. 371 Date Sep. 3, 1997 Sec. 102(e) Date Sep. 3, 1997 PCT Filed Jan. 19, 1996 PCT Pub. No. WO96/22031 PCT Pub. Date Jul. 25, 1996A device and process for using same is described for controlling free burn rate of a lit cigarette. The device is mountable on a cigarette and is adapted to permit insertion and movement of the cigarette into the device. The device includes a unit which controls rate of air diffusion to reduce supply of oxygen for supporting tobacco combustion by the lit cigarette coal. The structure for controlling rate of air diffusion is non-combustible at combustion temperature of a lit cigarette coal. By use of this device, the number of puffs per cigarette is greatly increased and, depending upon the selected design of the device for controlling free burn rate can reduce sidestream smoke emitted by a lit idle cigarette.