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 |
| 7763105 | Adjustable air filter for computer and assembly using the same An adjustable air filter for a computer, includes a bracket, a plurality of frames with air filter units set therein rotatably mounted to the bracket, a first transmission bar connected with each of the frames, a second transmission bar rotatably mounted to the brac... | 07/27/2010 |
| 6342093 | Air drier arrangement An air drier arrangement including an air compressor (1), an air-drier (3) and air conduits (2, 4). In order to obtain favorable working conditions for the arrangement under different temperatures there is a switch-over valve (6) in a separate signal air ... | 01/29/2002 |
| 6090172 | Exhaust gas filtering process and unit with modulable heating The present invention is a filtering unit providing after-treatment of the gases emited in the exhaust of Diesel engines, comprising a filtering set which includes at least one filtering element (11, 12, 13); at least one resistive element (3) which heats... | 07/18/2000 |
| 5914453 | Air handler filter monitoring apparatus A monitoring apparatus for alerting an operator to the need to change a temperature control system filter includes a mechanism for selecting and setting a primary period of filter use to assure replacement before the filter becomes clogged; a mechanism fo... | 06/22/1999 |
| 5738706 | Smoke filtration unit and method of using same The smoke filtration unit described herein has an internal cylindrical duct for ducting exhaust smoke from an exhaust flue to a shutter pivotally mounted within the cylindrical duct. The shutter can move between at least two positions. The shutter, when l... | 04/14/1998 |
| 5571310 | Volatile organic chemical tank ullage pressure reduction An apparatus reduces the pressure in a volatile chemical tank ullage including a first conduit for connection to the volatile chemical tank ullage, a vapor extractor, a pressure sensor to detect the pressure in the volatile chemical tank ullage, a separat... | 11/05/1996 |
| 5090972 | Particulate abatement and environmental control system Improved techniques are provided for improving the environment of hazardous material abatement personnel operating within an enclosed working area while conducting, for example, asbestos removal operations. A negative pressure is established within the wo... | 02/25/1992 |
| 4832711 | Adsorbent fractionator with automatic temperature-sensing cycle control and process A method and apparatus are provided for adsorbing water vapor or other first gas from a mixture thereof with a second gas to reduce the water vapor or first gas concentration in the mixture to below a permissible maximum concentration, in which the advanc... | 05/23/1989 |
| 4627568 | Moisture eliminator for air washer An air conditioning system is disclosed which employs an air washer for treating variable volumes of air moving through the air washer per unit of time. The air washer includes a moisture eliminator that is provided with means for changing its effective f... | 12/09/1986 |
| 4319896 | Smoke filter rejuvenation system A smoke filter element adapted to remove solid particles from an internal combustion engine's exhaust gas stream includes a bed which forms a multi-passage path along which the carbon particles are retained. A heating system incorporated into the filter p... | 03/16/1982 |
