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Author Topic: Can anybody identify this keyswitch?  (Read 3762 times)

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Offline Dimswitch

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Can anybody identify this keyswitch?
« on: Mon, 17 June 2013, 13:30:39 »
25673-0

Close up:
25693-1
« Last Edit: Tue, 18 June 2013, 04:08:47 by Dimswitch »
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Offline tgujay

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Re: Can anybody identify this keyswitch?
« Reply #1 on: Mon, 17 June 2013, 14:06:14 »
Quote from: Dimswitch on Mon, 17 June 2013, 13:30:39
(Attachment Link)

Not sure, looks similar to Space Invaders but definitely isn't.
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #2 on: Mon, 17 June 2013, 14:08:41 »
Yeah, it almost looks like a captive buckling spring in there to me... But like no IBM Ive ever seen
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #3 on: Mon, 17 June 2013, 16:24:49 »
Nobody knows anything about it?
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Offline CPTBadAss

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Re: Can anybody identify this keyswitch?
« Reply #4 on: Mon, 17 June 2013, 16:28:35 »
Omg, no one responded in an hour....have a little patience
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Offline CommunistWitchDr

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Re: Can anybody identify this keyswitch?
« Reply #5 on: Mon, 17 June 2013, 16:34:48 »
Quote from: Dimswitch on Mon, 17 June 2013, 14:08:41
Yeah, it almost looks like a captive buckling spring in there to me... But like no IBM Ive ever seen
No it doesn't. It looks like a spring over membrane to me, but I could be wrong.
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #6 on: Mon, 17 June 2013, 16:50:40 »
Quote from: CPTBadAss on Mon, 17 June 2013, 16:28:35
Omg, no one responded in an hour....have a little patience

Alright. I'm sorry if my posting bothered you, but considering the mountains of collective keyboard knowledge which browse this board, a single bump after an hour of no response in prime time (for a topic like this) isn't really what I would call terribly impatient...

And to be honest, it seems like something people might be interested in.

But I've been wrong [many times] before...
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #7 on: Mon, 17 June 2013, 16:52:48 »
Quote from: CommunistWitchDr on Mon, 17 June 2013, 16:34:48
Quote from: Dimswitch on Mon, 17 June 2013, 14:08:41
Yeah, it almost looks like a captive buckling spring in there to me... But like no IBM Ive ever seen
No it doesn't. It looks like a spring over membrane to me, but I could be wrong.

Interesting. And I'm sure you're right, at the very least about it not being a buckling spring - it just wouldn't be long enough.
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Offline Jack Karneval

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Re: Can anybody identify this keyswitch?
« Reply #8 on: Mon, 17 June 2013, 16:59:16 »
Nothin for nothin, but it looks awfully similar to a hall effect switch, which I happened to look up today...

example...
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Offline rootwyrm

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Re: Can anybody identify this keyswitch?
« Reply #9 on: Mon, 17 June 2013, 17:05:59 »
Definitely not hall effect, not with the exposed portion like that..

Not 100% sure myself, but that actually looks like it could be a previously unknown SMK. Could be that SMK built on contract specific to those keycaps for the ODM?
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #10 on: Tue, 18 June 2013, 02:29:47 »
Quote from: rootwyrm on Mon, 17 June 2013, 17:05:59
Definitely not hall effect, not with the exposed portion like that..

Not 100% sure myself, but that actually looks like it could be a previously unknown SMK. Could be that SMK built on contract specific to those keycaps for the ODM?

I've been trying to find an SMK switch mechanism that matches up but I've been unsuccessful so far... However, this ALPS plate spring switch looks similar... (http://deskthority.net/wiki/Alps_plate_spring)
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Offline Dimswitch

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Re: Can anybody identify this keyswitch?
« Reply #11 on: Tue, 18 June 2013, 09:36:33 »
Well somebody sniped the auction out from under me, lol. Hope it was someone here-I want to know what that switch is.

link: http://www.ebay.com/itm/140995393986?redirect=mobile
« Last Edit: Tue, 18 June 2013, 09:40:34 by Dimswitch »
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Offline dorkvader

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Re: Can anybody identify this keyswitch?
« Reply #12 on: Tue, 18 June 2013, 12:31:21 »
Quote from: Jack Karneval on Mon, 17 June 2013, 16:59:16
Nothin for nothin, but it looks awfully similar to a hall effect switch, which I happened to look up today...

example...
Show Image


I'm sure it's different than the IMSAI hall effect switches (shown) and it's definitely not microswitch hall effect.

My guess would be an alps plate spring knockoff, but I really have no idea.
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Offline rootwyrm

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Re: Can anybody identify this keyswitch?
« Reply #13 on: Tue, 18 June 2013, 12:42:25 »
Quote from: Dimswitch on Tue, 18 June 2013, 02:29:47
Quote from: rootwyrm on Mon, 17 June 2013, 17:05:59
Definitely not hall effect, not with the exposed portion like that..

Not 100% sure myself, but that actually looks like it could be a previously unknown SMK. Could be that SMK built on contract specific to those keycaps for the ODM?

I've been trying to find an SMK switch mechanism that matches up but I've been unsuccessful so far... However, this ALPS plate spring switch looks similar... (http://deskthority.net/wiki/Alps_plate_spring)

I don't think the Alps looks similar. Not compared to the SMK Cherry MX Mount - note the exposed centered spring. The actual switch looks like the entire upper frame was removed and they bastardized an inverse cross mount to make a full-sliding frame half. One of SMK's hallmarks was the exposed spring, it seems, which is why I immediately thought SMK. But that's some serious frame changes for a contract run.
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"I remain convinced I am the only person alive who has successfully worn out an IBM Model M mechanically."
Daily Drivers: Adesso 625 (NPKC PBT / Kailh Blue), Rosewill RK9000V2 (KC PBT / MX Brown), 1994 Model M13, Sun Type4, and the rare IBM 1394540.

Offline hjalfi

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Re: Can anybody identify this keyswitch?
« Reply #14 on: Sun, 05 May 2019, 14:33:22 »
I know this is a bit of a necropost, but the image here is really prominent when searching for this particular kind of keyswitch, and I managed to identify it: it's a SMK discrete dome-with-slider job commonly found on Canon typewriters. Here's a teardown:

https://deskthority.net/viewtopic.php?f=62&t=19859&start=

I really like mine; it's a very light, almost floaty thing, mostly linear but with a subtle but pleasing tactile event at the bottom. Very quiet. I've been thinking about converting my typewriter keyboard to USB, but it doesn't really have enough keys, so I'm interested to see that they made PC keyboards with them. Assuming the OP is still around after six years, what keyboard is that?
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Offline BlindAssassin111

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Re: Can anybody identify this keyswitch?
« Reply #15 on: Sun, 05 May 2019, 14:43:22 »
Quote from: hjalfi on Sun, 05 May 2019, 14:33:22
I know this is a bit of a necropost, but the image here is really prominent when searching for this particular kind of keyswitch, and I managed to identify it: it's a SMK discrete dome-with-slider job commonly found on Canon typewriters. Here's a teardown:

https://deskthority.net/viewtopic.php?f=62&t=19859&start=

I really like mine; it's a very light, almost floaty thing, mostly linear but with a subtle but pleasing tactile event at the bottom. Very quiet. I've been thinking about converting my typewriter keyboard to USB, but it doesn't really have enough keys, so I'm interested to see that they made PC keyboards with them. Assuming the OP is still around after six years, what keyboard is that?

OP was last active 2 weeks after creating the profile so you will most likely never know.
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Offline frydaja

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Re: Can anybody identify this keyswitch?
« Reply #16 on: Sun, 05 May 2019, 15:22:37 »
The keycaps look too similar to Cherry's keycaps. Maybe a switch somewhere between their foam&foil and MX?

Or was there a keyboard manufacturer who used this exact Helvetica font?
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Offline Findecanor

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Re: Can anybody identify this keyswitch?
« Reply #17 on: Sun, 05 May 2019, 17:09:58 »
Cool find of this old thread!

The Datadesk keyboard does not have the same keycap profile as the Canon typewriters. But several Canon's typewriters tend to have similar keycaps between themselves: with this SMK switch (this mount and SMK inverse cross-mount), Alps switches or a type of spring-over-membrane switch. They share the same font and colour scheme but some are cylindrical and some are spherical.
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