William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7287979 | Burner for a heater The present invention provides a burner (10) for a heater for combustion of a hydrocarbon liquid. The burner (10) comprises a combustion chamber having a combustion zone (17) for combusting the hydrocarbon liquid and at least one tank portion ( | 10/30/2007 |
| 6109912 | Fuel vaporizer A heater with a fuel vaporizer. The vaporizer has an uptube for carrying fuel and is centrally located within the burner. A cap is located over the uptube. A tubular casing forms an annulus about the uptube and communicates with the cap. Vaporizer fuel is... | 08/29/2000 |
| 6015287 | Liquid hydrocarbon burner A liquid hydrocarbon burner includes a single-walled pot; and a catalytic element placed centrally in the single-walled pot and comprised of an assembly of blades which are arranged concentrically around a vertical axis, which have in axial cross-section ... | 01/18/2000 |
| 5947717 | Vaporizing combustion chamber for a heater running on liquid fuel A vaporizing combustion chamber for a heater running on liquid fuel, in particular a vehicle heater, in which inter alia two pipes disposed concentrically one inside the other form therebetween an annular chamber which is closed at a first end. At the sec... | 09/07/1999 |
| 5478233 | Pot burner for liquid fuel A burner for combusting vaporized liquid fuel includes a combustion chamber which is open at an upper end and a side wall which defines air supply openings through which air is delivered into the combustion chamber. A thermally conductive body is disposed... | 12/26/1995 |
| 4643673 | Burner system at heating unit A burner system, for example at a heating unit, comprising a burner of evaporation type for liquid fuel, for example Diesel oil, where fuel is intended via an inlet (5) to be supplied into a combustion space, preferably at the bottom (3) thereof, which co... | 02/17/1987 |
| 4368032 | Liquid fuel combustion apparatus A liquid fuel combustion apparatus comprises a combustion cylinder, a fuel reservoir, a housing, a blower and an electrical ignition heater. The reservoir is disposed inside the cylinder to store a liquid fuel supplied from outside of the cylinder. The ho... | 01/11/1983 |