To at least some extent, the definition of switchblade knives is a legal one. Collectors have applied the term to a number of different blades, but it’s actually up to individual jurisdictions to decide what switchblades are and whether or not they’re legal. Naturally, that’s created a great deal of confusion when it comes to modern switchblade knives.
Manufacturers usually use the term to mean any kind of pocketknife that offers a pivoting blade held inside of a handle. This blade is biased toward remaining open, so depressing a single button or lever on the side of said handle is more than enough to open it up. Out-the-front models might shoot out of the thin bit of the hilt while other switchblade knives have a long slot along the side that offers sufficient space for the business end to shoot out.
Some knives have a stronger spring that can be quite difficult to close while others swing back and forth relatively freely into either position. Campers and outdoor enthusiasts might want something with a bit more substantial build quality while those who plan on using their knives indoors may instead prefer a lighter knife. Thin blades that shoot out of the side of their hilts are more than likely what comes to mind when most people think of switchblades. That’s especially true of classic Italian stiletto-style knives, which are still quite popular.
Check out Vipertec Knives online at https://www.vipertecknives.com/ for more information about switchblades and to see various styles currently on the market.