Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7303390 | Liquid oil lamps A liquid fuel lamp is provided with a wick carrying composite safety cap which is mountable to and removable from the liquid fuel container only by simultaneous pressing and turning actions. The safety cap has a spring biassed latch and a wick guard surrounding in a... | 12/04/2007 |
| 6751987 | Burners for producing boules of fused silica glass Burners (14) are used to make glass bodies (19) from OMCTS. The burners have six concentric regions. Putting certain gases through the regions results in thicker bodies than can be achieved with existing techniques and with improved efficiency. ... | 06/22/2004 |
| 6735981 | High heat capacity burners for producing fused silica boules Burners and methods for producing fused silica members. The burner includes seven gas-emitting regions, including four regions for emitting a mixture of oxygen and combustible gas. ... | 05/18/2004 |
| 6244853 | Gas burner and a gas powered heating device A soldering iron (1) comprises a soldering head (4) connected to a handle (2). A cylindrical catalytic element (20) located in a combustion chamber (8) converts gas to heat for heating a soldering tip (15). An electrode (40) located within the catalytic e... | 06/12/2001 |
| 5482455 | Hand-held electrically powered flame producer using disposable flamestrips The assembly which produces the flame is made up of a strip of conductive material, narrowed over an intermediate portion lengthwise, laminated onto a strip of combustible material such as cardboard, folded lengthwise over the strip such that the narrowed... | 01/09/1996 |
| 5451372 | Device for monitoring sterilization process utilizing 100% ethylene oxide A device is disclosed for monitoring an ethylene oxide sterilization process in which 100% ethylene oxide is utilized as the sterilant comprising a wick impregnated with an ethylene oxide responsive chemical compound, a quantifier and a pH sensitive dye; ... | 09/19/1995 |
| 5182436 | Portable bench-type electric ignite for gas welding torches A portable gas torch igniter includes a housing having a flame duct formed therein for the introduction of a gas torch. The flame duct is open at its rear end and has a front portion arranged substantially horizontally and has an open front end into which... | 01/26/1993 |
| 4573665 | Self-contained exothermic cutting system A self-contained portable exothermic cutting system including an electrode holder, current source, arc initiator and source of oxygen.... | 03/04/1986 |
| 4492561 | Welders torch igniting device A device for automatically igniting the oxygen-acetylene mixture flowing from a welders torch when the tip of the torch is brought into pressure contact with an elongate resilient member that forms a part of the invention.... | 01/08/1985 |
| 4113423 | Torch igniter An igniter for acetylene torches having ignition means protectively housed in a box-like metal enclosure that has an inwardly depressible hinged wall, depression of which activates the ignition means. A guarded opening through the depressible hinged wall ... | 09/12/1978 |
| 4108592 | Igniter for gas fired torches A device having a two piece housing on the cover of which are mounted the electrical components of an arc producing circuit including a sparkplug projecting upwardly through the cover. A partially closed hood about the sparkplug confines torch emitted gas... | 08/22/1978 |
| 4079291 | Electronic lighting device An electric arc lighting device for igniting inflammable products. The device comprises a direct current supply source and an oscillating unit constituted of a first inductance and an amplifying circuit connected in parallel with the supply source. The un... | 03/14/1978 |
| 4039274 | Electric safety lighter An electric safety lighter is provided which requires the preliminary step of immersing a normally dry wick into a reservoir of lighter fluid before a flame can be produced. This additional step precludes inadvertent operation of the lighter by a child an... | 08/02/1977 |
