Originally Posted By: Hikin_Jim
It seems like non-spring-assisted and spring-assisted locking knives are generally legal, provided that they aren't concealed.

Probably this varies by state. In Colorado, "a knife" is defined as something with a blade over 3-1/2", so you don't have to worry about carrying blades smaller than this, either concealed or not (but I don't know about short-bladed "assisted opening" knives - they may be different). There are exceptions to this blade length for hunting, fixed blades, etc., but 3-1/2" is about the biggest practical pocket knife so I just stick with that so I don't have to worry about it. The bigger blades do better in sheaths or holsters anyway, IMHO.