SMK spring over membrane
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SMK spring over membrane is buckling rubber sleeve spring over membrane switch, currently known only from a single keyboard.
A helical spring provides the membrane actuation pressure, while key return is provided by internal buckling rubber sleeves that the sliders appear to fit onto within the slider guide shafts.
Keycap, Slider, Guide shaft and buckling rubber sleeves
Keyboards
- Some Apple Keyboard II[1]
References
- ↑ Apple Rescue of Denver - Apple Keyboard II Parts ("Version B" is the version with this switch)
