Integrated display screen and slidable control for electrical circuits
US5805146A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Dec 10, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit control device of the type having a knob which an operator travels along a track to vary a circuit condition is disposed on the face of an electronic display screen. This enables a display of calibration marks, symbols and/or other indicia pertaining to operation of the control including at; locations in immediate proximity to the slidable knob which display can change instantly when the function of the control changes or when other conditions call for different graphics. The track and sliding knob and electronic components of the control signal producing circuit are at the front of the display screen thereby enabling easy repair. Components of the control signal producing circuit are contained within the knob and/or track. Knob motion is detected by compact and durable sensors which may include radio frequency sensors, capacitive sensors, photoelectric sensors or Hall effect sensors among others.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.