Assisted Opening Knives

An assisted opening knife is a type of everyday carry knife that allows the user to open its blade with one hand by applying pressure to the thumb stud or the flipper.

In the closed position, the blade is generally held in place by a torsion bar. When the user applies manual pressure to the thumb stud, they overcome the resistance of the torsion bar which propels the blade open. When fully open the blade locks into position, ready for use.

Kershaw Leek 1660

Kershaw Leek 1660

SOG Twitch XL

SOG Twitch XL

Although commonly confused with switchblade knives, they are indeed different. Switchblades, which are illegal, can be opened simply by the push of a button. An assisted open knife, however, must have pressure by the user to the blade at either the thumb stud or flipper.

While very similar indeed, because of the fact that blade does not open by the push of a button or mere force of gravity, the assisted opening mechanism is fortunately not considered a switchblade. Technically, it is not until the knife has been opened about one-quarter of the way that the mechanism propels the blade the rest of the way.

Kershaw Blur 1670

Kershaw Blur 1670

Manufacturers have patented a few different assisted opening knife technologies including, Kershaw’s SpeedSafe, SOG’s SAT (SOG Assisted Technology), Benchmade’s Nitrous and CRKT’s OutBurst. Other names for assisted opening knives include: assisted knife, open assisted, assisted folder, assisted pocket knife.

Assisted Open Knives by Brand:

More Assisted Opening Knife Info: