New Security Pin Idea?

[r0n]

I was thinking while in the shower today. What about a security pin that was a cone? With the base of the cone resting on the bottom pin and the point hitting the spring?

In theory (at least in my mind) if it is not the right key it would force the top pin down into the plug while tring to bind it.

Its been awhile since I have posted here but ive been stalking around for about a week again and I have to tell you I have learned alot and I have also bought a deadbolt and took 4 out of the 5 pins out and waiting to make my pins when I get back home so that I can use my neightbours grinder

[globallockytoo]

a cone shape pin would require a wider chanber in the bible...therefore providing more tolerance...defeating the purpose.

To make a chamber more secure first think about reducing the tolerances.

[digital_blue]

Conical pins do exist, though I've never actually laid my eyes on one. I've seen a picture somewhere though, and I think it was in LSS.

db

[n2oah]

I've seen locks pinned with all top pins, if that counts.

[globallockytoo]

Improvements to the pin tumbler mechanism have and will be around for a long time.

Not withstanding the already phenomenal improvements in pin tumbler designs, I think it might be more practical to look at alternative locking mechanism designs than just variations on pin tumblers.

This is one of the reasons that companies like Abloy and Multlock have been successful recently. And for that matter, other European designs that step away from the more mundane pin tumbler principle.

Perhaps looking at miniature lever locking designs where tolerances are smaller with tighter gates, or incoroprating the principles of Chatwood Milner Mainfoil combination locks, where antimanipulation devices are incorporated into the wheel pack, but tailored to key locking systems.

The future is inded bright as long as we can encourage and stimulate peoples thinking with discusions in forums such as these.

[linty]

if the pin is angled sharply enough i would worry about it turning on it's side, and if it was angled gently, i don't think it would be on the same scale of effectiveness as current security pins. also, if the cone pin sort of tilted as you were picking it, it wouldn't be very effective.
It's hard to picture exactly how your idea would work wihout trying it. maybe i'll grind off the ends of a mushroom pin and give it a try.

[Gordon Airporte]

If the pin was tapered over its entire length, wouldn't it tell you exactly when it was set? The plug would turn freely for a degree or so, then just lift until the plug starts, then stops counter-rotating.
Of course, having six of these in a lock might make all the difference.

[jordyh]

Could be just me, but the only conical pins that i've seen were the ones that were weared down too much,

[greyman]

A conical security driver pin would tend to jam in the pin chamber. Anything that prevents the proper key from operating smoothly is a bad idea. Mushroom pins are already the practical manifestation of a conical pin, but with full diameter at both ends.