Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7179146 | Swimmer training paddle simulating shape of human hand A swimmer's hand paddle simulating a human hand is formed from a generally planar member of PVC foam and has a central dome-shaped palm area for receiving the palm of the swimmer's hand. The paddle includes areas for receiving the thumb and fingers of the swimmer's ... | 02/20/2007 |
| 7172475 | Naval propulsion system fed by refuse derived fuel and method thereof Naval propulsion system (1), comprising a heating chamber (6), apt to be fired with refuse derived fuel, an extraction unit (3, 5) apt to extract the fuel in the form of bales housed in containers to feed it towards the heating chamber, and a un... | 02/06/2007 |
| 6244196 | Apparatus and method for burning organic material An apparatus and method for burning organic material including farm bedding waste of the present invention includes a firebox having an air injector disposed within the firebox. A heat exchanger is also disposed within the firebox above the air injector. ... | 06/12/2001 |
| 6196144 | Device for carrying out high-temperature recycling of heterogenously occurring waste and process for charging thereof The invention relates to a device, and a process for its charging, for carrying out high-temperature recycling for heterogeneously occurring waste in compact packages. The compact packages are introduced into a heated channel for evaporation of liquids an... | 03/06/2001 |
| 5839375 | Apparatus for burning organic material An apparatus and method for burning organic farm bedding waste includes a firebox having an air injector disposed within the firebox. A heat exchanger is also disposed within the firebox above the air injector. The fuel to be burned, a mixture of organic ... | 11/24/1998 |
| 5626087 | Mobile smokeless agricultural field burner A smokeless mobile agricultural field burner for burning agricultural waste products, mainly rice straw, in the field without releasing excessive air pollution into the environment. The burner consists of a main structure, either self-propelled or towed, ... | 05/06/1997 |
| 5197684 | Device for tearing-up and stoking straw A device for tearing-up and stoking straw into a burner unit. A reciprocating slide is provided under a magazine shaft for straw bales, the slide having mutually staggered teeth on its upper side in a forward part of the slide and elongated fins extending... | 03/30/1993 |
| 4995324 | Method of disposing of waste material A system for recovery of the heat value of waste material, that heretofore has been wasted through landfill disposal, but in which the collected bales of waste material are passed through a bale breaker to release the waste material into a free condition ... | 02/26/1991 |
| 4796544 | Apparatus for tearing up and stoking bales of straw material and for stoking other kinds of solid fuel An apparatus for comminuting and stoking of straw bales, and for automatic stoking of chips, pieces of wood, paper, industrial waste, garbage, lignite, coal, briquettes, pellets, and similar solid fuel includes a number of substantially parallel reciproca... | 01/10/1989 |
| 4732090 | Heating furnace for recovery of energy from compacted paper, straw and like fuels Heating boiler intended to be used for burning straw, paper and similar fuel material in the form of compressed bales. The boiler is capable of supplying the material to be burned as a function of the heat requirements. It is necessary to provide optimum ... | 03/22/1988 |
| 4637327 | Stoking plant for fuel in whole bales A stoking plant for fuel in whole bales, where the bales are conveyed on a transport tract (8) from a store and stoked in the whole condition into one of a number of combustion furnaces (2) with boilers (1), comprises a slide-gate (10) through which a bal... | 01/20/1987 |
| 4616572 | Biomass incinerator A compact incinerator for biomass has an upright combustion chamber coaxially surrounded by a passage through which the biomass is fed from a separator in which the primary air is separated from the biomass, to the combustion chamber. An afterburner chamb... | 10/14/1986 |
| 4289079 | Sawdust furnace A sawdust-burning furnace comprising an inner shell, an outer shell disposed approximately 1 inch from the inner shell, a bottom member and a cover member, an air intake from the base thereof, an exhaust aperture, means to place sawdust therein with a pri... | 09/15/1981 |
| 4281603 | Means for feeding solid combustible waste material to a furnace A furnace for burning solid waste material such as straw bales or wood shavings is fed automatically from a reservoir container through a pipe that leads into the bottom of the furnaces combustion chamber. The automatic feed may comprise a pusher sliding ... | 08/04/1981 |
| 4218980 | Furnace especially well suited for burning straw, wood waste materials and the like A furnace adapted for burning waste materials such as straw, brushwood or the like has a cylindrical housing enclosing a combustion chamber and a hopper above the chamber for supplying fuel thereto. A slidable partition member separates the hopper from th... | 08/26/1980 |