Lockable/Removable thumb turn SFIC deadbolt?

[TCS]

Is there such a thing as a single cylinder SFIC deadbolt with a lockable or removable thumb turn? I haven't been able to find one, and I imagine if they do exist they're likely to be cost prohibitive, but I figured it's worth asking.

Or for that matter, one could get a reasonable approximation by using a double cyl and a SFIC core that retained the key in the locked position, but I doubt that exists either...

[keysman]

What you are looking for is called Double cylinder captive thumbturn.
Not sure if it is available in SFIC ( my sfic expert is closed for the holiday )

Most manufacturers make a similar lock. Do a search for "Double cylinder captive thumbturn".

Here is one from Medeco:

http://www.medeco.com/Other/Medeco/Down ... /Maxum.pdf

[jeffmoss26]

What about one of these?

[TCS]

What about one of these?

These what? Was there supposed to be a link to something?

[Evan]

Is there such a thing as a single cylinder SFIC deadbolt with a lockable or removable thumb turn? I haven't been able to find one, and I imagine if they do exist they're likely to be cost prohibitive, but I figured it's worth asking.

Or for that matter, one could get a reasonable approximation by using a double cyl and a SFIC core that retained the key in the locked position, but I doubt that exists either...

Why not describe what kind of door you are attempting to lock, rather than asking if a specific type of lock exists ? There might be another locking device or accessory which can be installed as opposed to a double cylinder lock to accomplish a similar level of security without risking entrapment...

Captive SFIC cores do exist, just not in the way you are thinking they are implemented... They are called "trap cores" and are used to capture a given key that they are keyed up to trap -- no other key functions and once captured it remains immobile in the core and requires professional removal methods...

~~ Evan

[TCS]

Why not describe what kind of door you are attempting to lock, rather than asking if a specific type of lock exists ?

Because I've been interested in SFICs lately and I'm asking as much or more for the purposes of understanding what's out there as solving any particular problem. Perhaps I should have clarified that this is more of a "what COULD I buy" than "what SHOULD I buy" question

There might be another locking device or accessory which can be installed as opposed to a double cylinder lock to accomplish a similar level of security without risking entrapment...

Sure, I'm interested in what else might work (security film on a window next to the lock, for example), but primarily I'm interested in exploring the SFIC solution space, as it were (I've also been looking for SFIC switch locks -- not that I have any use for one, but because I'm curious what exists)

Captive SFIC cores do exist, just not in the way you are thinking they are implemented... They are called "trap cores" and are used to capture a given key that they are keyed up to trap -- no other key functions and once captured it remains immobile in the core and requires professional removal methods...

I'm pretty sure I've seen key-retaining SFIC padlocks, so something more along the line I'm thinking of, except those would retain in the unlocked position instead of in the locked one. (Unless the retention is a property of the body and not the core?)

[Evan]

i'm pretty sure I've seen key-retaining SFIC padlocks, so something more along the line I'm thinking of, except those would retain in the unlocked position instead of in the locked one. (Unless the retention is a property of the body and not the core?)

Key retaining SFIC padlocks are a function of the actuator inside the padlock body and not the core...

~~ Evan

[cledry]

You could get any brand of double cylinder SFIC and then use a T-core in the inside and remove it and put a keyed core in when you need to have the key on the inside.

http://www.fullerbroslock.com/install.asp

[TCS]

You could get any brand of double cylinder SFIC and then use a T-core in the inside and remove it and put a keyed core in when you need to have the key on the inside.

http://www.fullerbroslock.com/install.asp

Neat! That's a very elegant solution, taking advantage of interchangeability.

That raises the question, what other kinds of oddball cores are out there?

[jeffmoss26]

D'oh! That Fuller Bros T Core is what I meant to post. Forgot to paste the link

[dll932]

You could get any brand of double cylinder SFIC and then use a T-core in the inside and remove it and put a keyed core in when you need to have the key on the inside.

http://www.fullerbroslock.com/install.asp

Neat! That's a very elegant solution, taking advantage of interchangeability.

That raises the question, what other kinds of oddball cores are out there?

Lots of shells and locks come with "disposable" thumbturns made of Delrin or Nylon. I have a bagfull of 'em. They just snap in or yank out.

[TCS]

Key retaining SFIC padlocks are a function of the actuator inside the padlock body and not the core...

OK, I guess I need to investigate how the key retention function works.