Looking for a word

[nopyo]

Lockbacks, liner locks, frame locks, axis locks, arc locks, etc. all go under the category of "Locking Mechanisms", legally speaking.
If slip-joints are allowed in areas such as NY and UK where knives with "Locking Mechanisms" are banned, what category would slip-joints go under?
Is it just simply "slip-joints", or is there a more legal-jargon-loaded word/description?

Thanks in advance.

 

[glistam]

Probably the best term would be "non-locking folder."

Besides the slip-joint, there are a few other designs that fit this bill. There are "friction folders" that use nothing but the resistance of the pivot to stay open, such as smaller sized Opinels, sodbusters, or "peasant knives." A few combine friction with some kind of extension of the tang that allows the knife to be held open by the hand grasping it, such as the Japanese Higonokami or the Kiwi Svord. In some legal contexts, the larger Opinel's manually-engaged lock also is included, because many statutory language specify that the lock has to engage automatically to be considered a locking knife.

 

[tom19176]

In the interest of accurate reporting...NY does not ban locking knives ( not even NYC)...Locking knives that be flicked open are sometimes considered gravity knives, but the mere fact they lock open does not make them illegal per se.