deskthority

Got this keyboard a little while ago. I am impressed at how clicky these min-domes are but I can't figure out what makes it click exactly. This is a great keyboard and I believe it is OEMed from Olivetti. I don't know who makes the keyboard mechanism/switches. It IS similar to one posted by Haata here but the key switches use different construction.

The mechanism is similar to Fujitsu Peerless.

Olivetti Snap-action? wiki/Olivetti_snap_action

mcmaxmcmc wrote: Olivetti Snap-action? wiki/Olivetti_snap_action

No. That is what Haata's example has. They look identical from the top but not the bottom. The patent got me looking at other patents from Olivetti and you can see this particular switch in this patent: https://patents.google.com/patent/US4602138A/en

So, two variants of "Olivetti snap action" switches then.
It looks like the metal-dome variety already in the wiki works on the same principle. Like the Fujitsu Peerless, and the SMK typewriter keyboard I posted in late September: both of these are also lightly clicky: clicky but not loud.

I suspect that when the rubber dome buckles, the spring being released quickly, it is allowed to rebound — and it is when the spring rebounds against its new extreme that a collision happens that causes the sound.
Compare to pressing down a key at the edge of the keyboard and moving your finger sideways off the key: the key snaps up and makes a sound when it reaches the top: Imagine that the key is flipped over and your finger moving off the key is the rubber dome buckling.

Isn't that just Olivetti dome with slider? Oo