Patent US 4166200A
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| Patent number | US 4166200A (click link for details and documents via Google Patents) |
|---|---|
| Title | Compact rotary switch construction |
| Inventors | John E. Reichen, Scott B. Long |
| Company | Tektronix Inc |
| Filing date | 1978-08-07 |
| Grant date | 1979-08-28 |
Related products:
| Manufacturer | Model | Description | Introduced | Designers |
|---|---|---|---|---|
| Tektronix | 211 | 500 kHz miniature analog scope | 1971 | Dave Allen • Wendell Damm • Al Hill |
| Tektronix | 212 | 500 kHz miniature dual channel analog scope | 1973 | Dave Allen |
| Tektronix | 221 | 5 MHz miniature analog scope | 1975 |
An Article in Electronics, February 20, 1975, says
The model 211 would need two multiposition switches that would take as little space as possible and still be low in cost. The solution worked out by Scott Long of Tektronix' switch department was to etch the switch patterns onto the multilayer input circuit board and to clamp the wipers over the board. This simple design uses inexpensive injection-molded plastic housings and requires no discrete wiring to the contacts.