Combustion Products Heat Work By Contact Patents (Class 432/159)
- Having additional feed means diluting combustion products (Class 432/187)
- Work chamber indirectly heating by common wall or connecting flue (Class 432/188)
- Having pump or jet means forcing air into combustion chamber (Class 432/189)
- Distinct vertically spaced combustion products feed openings to work chamber (Class 432/190)
- Plural distinct combustion chambers feed single work chamber (Class 432/191)
- Multiple perforate wall, floor or roof for combustion feed or exit (Class 432/192)