Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7387762 | Apparatus for sintering silver clay A sintering apparatus for silver clay wherein a silver clay composition can be readily and easily sintered by exposing a silver clay composition obtained by molding to a flame of a solid alcohol fuel. ... | 06/17/2008 |
| 5195673 | Method and apparatus for convection brazing of aluminum heat exchangers A convection braze furnace for brazing aluminum heat exchangers in an inert gas rich atmosphere includes entrance and exit vestibules forming atmosphere barriers of suspended stainless steel strips. The interior of the braze furnace is divided into multip... | 03/23/1993 |
| 4702696 | High temperature vacuum furnace A vacuum furnace for heating dental reconstructionproducts using sintered powder metal that includes a sealed vacuum tube made of a material having a relatively low thermal shock resistance characteristic. The vacuum tube is desirably relatively short. Th... | 10/27/1987 |
| 4295826 | Infrared dryer Disclosed is an infrared dryer which comprises (1) at least one infrared heater in a heating chamber, (2) a pair of mutually parallel air troughs which guide ambient air from an intake end of the dryer, along the top of the dryer, and empty air into a col... | 10/20/1981 |
| 4218213 | Thermally conductive partition A partition of high thermal conductivity is provided to separate a furnace heating zone from a furnace reaction zone, the reaction zone being at least partially heated by radiant heat from the heating zone. In a preferred embodiment, the partition means c... | 08/19/1980 |
| 4118875 | Method and means of drying particulate material A portable grain drying apparatus comprising a wheeled frame having a cylindrical housing mounted thereon and extending upwardly therefrom. The housing is provided with a perforated wall portion to permit the escape of air therethrough. An inverted conica... | 10/10/1978 |
| 4088439 | Tangentially gas fired muffle A tangentially gas fired muffle comprises a hinged annular housing defining inner and outer annular chambers divided by a ring of heat resistant perforate or expanded material. The outer annular chamber has inlets in the form of immersion tubes each locat... | 05/09/1978 |
| 4053279 | Fuel-fired, radiant heater A radiant heater is provided with a fuel-fired radiant housed in a combustion chamber having a wall with a radiation-transmissive panel. A plenum adjacent the combustion chamber is provided with air under pressure greater than that in the combustion chamb... | 10/11/1977 |
| 3957479 | Glass treating furnace A furnace for treating glass sheet material and the like in a glass tempering system. The furnace includes an upper glass treating zone and a lower gas treating and distributing zone for homogenizing gases of different temperatures to minimize exposure of... | 05/18/1976 |
| 3930831 | Furnace for heat treating glass sheet material A furnace for heat treating glass sheet material including a circular enclosure having top, bottom and side walls of refractory material. Inlet and outlet openings are formed in the side walls. The side walls have an outer insulating layer and an inner la... | 01/06/1976 |
