FOLDING KNIFE Russian patent published in 2017 - IPC B26B1/04 

FIELD: human vital needs satisfaction.

SUBSTANCE: folding knife contains a handle, a blade pivotally connected with it, an opening/closing and blade locking mechanism connected to the handle and the blade. The handle has at least one longitudinal guide. The opening/closing and blade fixing mechanism contains at least one rod, one end of which is pivotally connected with the blade and the other - with a movable element interacting with at least one longitudinal guide with the possibility of reciprocating motion and fixation of the blade in the open position with the tangent of the angle between the axis of the rod and a plane perpendicular to the direction of the movable element movement, smaller than the coefficient of the sliding friction between the surface of the movable element and the surface of at least one longitudinal guide.

EFFECT: it is possible to protect the mechanism of opening, closing and fixing the blade, excluding the possibility of accidental opening, closing the blade, increasing the reliable fixation of the blade in the open position without backlashes.

20 cl, 7 dwg