'twin control' locks/keys, does anyone know how they work?

[supine]

i saw the picture of an odd key at http://www.trioving.no, and i can't seem to find any in-depth info on 'twin control' locks. this is the key:



does anyone know how they even work?

[Chucklz]

By twin control, do you mean that you need to use more than one key to open a lock?

[supine]

no, not from what i can tell by the limited information available at their site. here's a translation:

"the sylinder has a double technology where two different mechanical systems control the key to prevent manipulation, and steal pegs as protection against drilling."



i'm just curious how two different sets of pins can be set to both work in the same direction. at least with dimpled keys you have them coming in from the sides. looking at the key though, the notches are oddly placed. it's supposed to be this 'concept' security project by trioving.

has anyone seen anything like this before?

[supine]

'steel' pegs, even..

[Chucklz]

From what I get of your translation, the steel pegs are for drill protection. Most high security locks have them. Here is my best guess about the dual control. Other companies have done the following

1. A standard set of pins.
2. The side pins are engaged by tabs that protrude from the pin.
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THe tab on the bottom pin is what the key engages. This allows the pins to be off to the side a bit. Note, that instead of having both top and bottom pins on the side, there may be a single set of pins with a sidebar.

[marso]

It looks like this company does not have much information available on the web as someone asked about more details on their locks in december. viewtopic.php?t=1087

I guess you could not take one apart and photograph it?

[marso]

http://www.woodpend.com.au/S_lwf0.jpg

Lockwood Twin Overview
Each Lockwood Twin key has a unique security feature, an extra set of bitting along the side of the blade - the side code - in addition to the usual top bitting (top code). The side code acts on a side bar in the cylinder. Each key (or key set) also has a unique pattern of side grooves on the blade forming the profile.
A key with the wrong profile cannot even be inserted. A key with the wrong side code cannot release the side bar. For a key to open a lock, it must have the correct profile, side code and top code.

http://www.woodpend.com.au/twin.htm

I know it is a different manufacturer but hopefully some of the technology will be the same.

[supine]

marso: I guess you could not take one apart and photograph it?

if i owned one maybe i could. :) 'concept project' sounds expensive though.

marso: I know it is a different manufacturer but hopefully some of the technology will be the same.

that's what i was looking for. your google-fu is more honed, i see. :) thanks for the help.

[McSwede]

looks like a lot of companies are going with that type of system for thier higher security such as the ASSA twin pro http://www.assalock.com/twinpro.htm Schlage's everest and primus http://professional.schlage.com/products/products.htm and medeco's keys

[Chucklz]

Except for the Schlage, all the other brands mentioned, Medeco, Assa, TrioVing, are all owned by the AssaAbloy group. Kinda helps to explain why so many high secuirty locks are just reinventions of each other.