| 摘要 |
PCT No. PCT/CA97/00297 Sec. 371 Date Sep. 26, 1999 Sec. 102(e) Date Sep. 26, 1999 PCT Filed May 2, 1997 PCT Pub. No. WO97/41744 PCT Pub. Date Nov. 13, 1997A cigarette combustion unit for the use in a hand-held cigarette smoke filtering device for filtering sidestream smoke emitted from a cigarette burning in the unit comprising: i) an elongate closed combustion chamber for a burning cigarette, a lower wall portion of the combustion chamber at least having an air porous portion to permit air to enter the combustion chamber, ii) a cigarette holder in an end of the combustion chamber for holding a cigarette in the combustion chamber with its burning end spaced from chamber interior wall surfaces, and iii) a sidestream smoke outlet in the end above the cigarette holder. |
