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 |
| 6695006 | Flow control providing stable fluid flow A flow control includes a support having a passage and a seal surface, a deformable seal that is engageable with the seal surface, and a bias member for exerting a variable bias against the deformable seal. The seal surface includes channels formed in its... | 02/24/2004 |
| 6672334 | Multi-diaphragm valve A multi-diaphragm flow control valve includes a valve body separable into two parts. Each part includes an interior chamber having a closed end which separates the chambers when the parts are joined and an open end for connection to a pipe. An outer chamb... | 01/06/2004 |
| 5211194 | Fuel control valve A manually operated fuel control valve having at least two operating positions, one being an "on" position for feeding fuel through a main fuel inlet when the fuel tank is full and the other a "reserve" position for feeding fuel through a reserve fuel inl... | 05/18/1993 |
| 4117863 | Control device for operation by the mouth of a handicapped person The invention relates to detecting or control devices for the control of utilization circuits particularly by handicapped persons who can move only their jaws. By squeezing action of the mouth, signal lines in a pressurized fluid deformable control member... | 10/03/1978 |
