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Undoubtedly, Cold Steel makes the safest, strongest, rocker-lock folders on the planet. It's one of many qualities that separates Cold Steel from our competitors.
Our latest improvement is our new Tri-Ad lock. Designed by Andrew Demko, the Tri-Ad is revolutionary enough to be granted a U.S. patent and an additional patent is still pending on supplementary features of this lock.
The "Stop Pin"...
The cornerstone of the Tri-Ad's strength, among other subtle refinements, is the inclusion of a new "stop pin" which re-distributes the load of vertical positive and negative pressures on the lock.
The stop pin receives all positive pressure (pressure on the cutting edge) and transfers it into the handle frame and liners where it can be more effectively absorbed.
Negative pressures on the lock produced, for example, by prying, digging, piercing or even abusive spine whacks are redistributed because the stop pin receives the forward pressure from the rocker and transfers it into the liners protecting the rocker and its pivot from failing.
Self Adjusting...
Finally, outside of keeping the lock free from the buildup of pocket lint in the mechanism, the Tri-Ad lock requires very little maintenance. It's designed to be self adjusting, in the sense that, over time as parts begin to wear, the Tri-Ad's design will allow it to adapt so the locking bar always wedges deeper in the lock channel between the stop pin and the shoulder of the precision cut tang notch. This feature allows for a very safe and secure lock-up.
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