| US 7,488,171 B2 | ||
| Gas micro burner | ||
| Frank Kelley St. Charles, Perry, Ga. (US); and Kayyani C. Adiga, Macon, Ga. (US) | ||
| Assigned to R.J. Reynolds Tobacco Company, Winston-Salem, N.C. (US) | ||
| Filed on Nov. 19, 2004, as Appl. No. 10/994,107. | ||
| Application 10/994107 is a continuation in part of application No. 10/217695, filed on Oct. 25, 2002, granted, now 6,827,573. | ||
| Prior Publication US 2005/0069831 A1, Mar. 31, 2005 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. F23D 14/62 (2006.01); F23D 14/14 (2006.01) | ||
| U.S. Cl. 431—329 [431/344; 431/354] | 35 Claims |
| 1. A gas burner, adapted to be integrally combined with a smoking article, comprising:
a venturi having a nozzle and an oxygenation chamber in flow communication with said nozzle, said oxygenation chamber having
at least one air inlet;
a mixing chamber in flow communication with said oxygenation chamber and having a frustoconical portion of an inner wall that
diverges from said oxygenation chamber;
at least one permeable barrier in flow communication with said mixing chamber and being disposed opposite said oxygenation
chamber; and
a flame holder in flow communication with said permeable barrier, said flame holder including a flame tube in flow communication
with said flame holder, said flame tube having an exhaust port and being adapted to hold said smoking article.
|