The Crankshaft lock design

[Squelchtone]

https://drive.google.com/open?id=1gncT3 ... FrR_EDnBYw

Updated image link: https://i.imgur.com/YbOjrJi.png



Hello everyone. I'm a physicist and an inventor from Israel, with a special interest in locks (Master Lock's Speed-Dial lock is one of my contributions in the field). I have recently come up with a novel lock design which, to the best of my judgment, is more pick resistant than any commercial lock, and yet very robust, small and inexpensive to manufacture. In fact, I currently cannot think of any effective attack strategy, and this is what brings me to a forum of elite criminal minds .

I am truly eager for second opinion with regard to the pick resistance of the design, or anything else.

Provisional patent application: https://drive.google.com/open?id=1ZbEQY ... jT-GBrAMQN

Short clip explaining the patent: https://drive.google.com/open?id=1vgXg0 ... rykp8-PYIQ

[Squelchtone]

[EDIT: Photo posted to imgur.com by OP, original post updated]

Your sharing permissions are not set up, we have to ask for Permission to view your photos.

Please consider hosting photos anywhere else but in a google drive, it requires all of us to have a google login in order to see your photos.

imgur.com seems to work well, upload photos as Private, paste direct link here. The [img] command only displays photos with a direct url to the image file such as http://www.domainname.com/foldername/filename.jpg

Thank you
Squelchtone

[jwrm22]

Thank you for sharing this lock with us. I'm amazed and am looking forward to reading the article/ patent documentation.
Don't attempt to make a lock to beat a lockpicker. It's a lot harder to make something cheap, reliable and serviceable.
When a hobby picker picks it it does not mean it's a bad lock.

How well do you know disk detainer locks? They use a toolhead that fits in between the discs.
But I see how this is something completely different.

[Squelchtone]

How does the key insert? It appears like you have to turn the key to navigate the opening in the disks in correlation to the shape of the key.

It reminds me of the Fichet F3D key.

[Yehonatan Knoll]

How does the key insert? It appears like you have to turn the key to navigate the opening in the disks in correlation to the shape of the key.

Watch the attached clip (10 sec.) or the patent. The wafers are initially centered.

[Raymond]

This is a very interesting design. However, I also am wondering what keeps the wafers straight and in line so the key can enter. It would seem that any picking attempt or just vibration would cause the wafers to slide about and not be in line.

[Yehonatan Knoll]

I am wondering what keeps the wafers straight and in line so the key can enter. It would seem that any picking attempt or just vibration would cause the wafers to slide about and not be in line.

You are right in principle (although the wafers are spring loaded). This drawback, however, is common to all disc detainer locks so I concluded that it's not a real practical problem. Note also that the wafers can easily be centered with any tooth pick. I have also thought of a way to lock the wafers in place while the key is outside, but that would slightly complicate the mechanism.

[jbrint]

My biggest concern is the key itself. That looks like something that will get broken in a pocket or twist off

[Yehonatan Knoll]

My biggest concern is the key itself. That looks like something that will get broken in a pocket or twist off

There are ways to make it stronger (see patent) but even as is, its geometry is stronger than some commercial, deeply cut keys (Abloy Classic for example).

[mh]

Hi Yehonatan,

Sorry I missed this post until now (and found it because of Zeefeene's presentation).

Anyway - would I be able to move a somewhat flexible spring steel wire with a "v"-shaped bend at the tip through the wafers?
Like ---------------------v ?

Cheers
mh

[Yehonatan Knoll]

Hello mh - my old friend
Wasn't notified of your reply...
Anyway, I'm not sure what your tool is intended for. Zeefeene seems to have missed the point of the concept. With some good glue, tensioning is not really an issue in my lock, or any other lock. The idea is that, after setting some wafers, access is denied for the rest. I explain it in detail in the patent.

[mh]

I think that tool would be more suitable for picking than the L-shaped tool “P1” in your provisional patent.

Best
Michael

[Yehonatan Knoll]

mh-
Perhaps V, or asymmetric T tips could be beneficial in some cases (but not others). But I think there is an inherent limitation to torque-and-set: The wire needs to be extremely flexible, yet transfer moment to its shaped tip. And it will inevitably interact also with multiple wafers beside the one engaging its tip.

[mh]

That is correct, but if you achieve the desired front-to-back binding order, the other wafers should be held in place (in their gates) by the sidebar.

[Yehonatan Knoll]

Yes, you are right that knowing in advance the binding order could potentially benefit a picker, though I'm still skeptical that enough. And there is no problem producing, say, 10 types of sidebars each distinctly biased to produce "statistical" front-to-back binding order.