Did You Know...
...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7361869 | Method for the production of an electrically conductive resistive layer and heating and/or cooling device An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no de... | 04/22/2008 |
| 5214407 | High performance current shunt A current shunt for converting a current to a voltage. The current shunt of the invention is made from a conductive material such as a high performance resistance alloy in sheet form which is sheared, punched, and bent to produce a highly stable current s... | 05/25/1993 |
| 5068636 | Current shunting A current shunt device has main and auxiliary windings which are located in substantially the same position and are connected in series.... | 11/26/1991 |
| 4693111 | Position sensor for a movable part in a motor vehicle A sensor is disclosed for detecting the position of a movable part in a motor vehicle with a common drive for several position pickups and several paths. The individual paths are traversed at least partly consecutively over the total range so that a posit... | 09/15/1987 |
| 4225843 | Variable attenuator A variable attenuator comprises a generally horseshoe-shaped main resistance element, a sliding member movable thereover, and a bypass provided around that portion of the main resistance element adjacent the end portion of the path of said sliding member.... | 09/30/1980 |
| 3950722 | Variable resistance control A variable resistance control employing a support plate and a resistance element having a pair of spaced resistance paths applied on a base and rotatably mounted on the support plate. A pair of terminals with integral contacts are secured to the support p... | 04/13/1976 |
| 3935505 | Fluorescent lamp dimmer A solid state dimmer for fluorescent lights with standard (non-dimming) ballasts. Dimming is adjusted by changing the resistance in a capacitor charging circuit. Features include a trimming adjustment for eliminating flicker, a voltage regulator compensat... | 01/27/1976 |
