Extrema Ratio S.R.L. Via Traversa delle Ripalte,72/78 | 59100 Prato (PO) Italy | P.I.02481870976
Abbiamo sviluppato la ERMH (Extrema Ratio Multipurpose Handle) , in collaborazione con la Facoltà di Scienze Motorie dell’Università di Perugia, Two locking mechanisms are used in the folder knives: the LOCK BACK and LINER LOCK.The former is a basic functional lock. In practice the lock design positions a stop bar parallel to and in direct line with the blade at the upper back or rear tang of the blade to lock the blade open. As the blade is rotated open, the spring tensioned, center pivoted stop bar tracks around the circular portion of the blade tang until it drops or locks into the notched out tang. This style of locking mechanism requires two hands to safely close the blade although you may still easily open the blade single-handed if desired. The latter is a mechanism that when the blade of the knife is in the opened position, it is held in place by a leaf spring (also called a lock bar) that butts up against the tang of the blade to prevent the blade from closing. To release the lock, the user must press the lock bar back toward the handle side, at which time the blade is allowed to close. In the closed position the lock bar rests alongside the handle and the blade.