Key and cylinder locking assembly corresponding to said key

Abstract

A key whose blade includes axially a window forming an opening throughout the thickness of the blade between two opposite faces thereof, and a set of rollers mounted in series along the windows with each roller being mounted freely rotating around a spindle fixed transversal to the window. The key could concern security keys designed to cooperate with a pin tumbler cylinder.

1 . Key whose blade comprises axially a window which forms an opening through the thickness of the blade from one side to the other and in which at least one roller is mounted to rotate freely around a fixed spindle mounted transversely to the window in the thickness of the key. 
     
     
         2 . Key according to  claim 1 , wherein the several rollers are arranged successively one after the other in the window, along the axis of the key blade. 
     
     
         3 . Key according to  claim 2 , wherein the rollers have different diameters. 
     
     
         4 . Key according to  claim 3 , wherein the diameter of the roller is greater than the thickness of the blade such that the roller, mounted rotationally around a spindle in the median plane of the key, projects on either side of the blade faces. 
     
     
         5 . Locking assembly comprising a key according to  claim 1  and a lock cylinder comprising a rotor and a stator, in addition to a set of pins and counter pins which, by their respective positioning, enable rotation of the rotor in the stator to be locked or unlocked, wherein one of the pins is arranged to slide radially in the rotor so that it corresponds to a roller when the key is inserted into the lock cylinder. 
     
     
         6 . Locking assembly according to  claim 5 , wherein the diameter of the roller is determined such that when the key is inserted into the lock cylinder, the surface of the roller will cooperate with the end of a pin. 
     
     
         7 . Locking assembly according to  claim 6 , wherein the rollers are arranged axially in series in the window formed in the thickness of the blade and that a corresponding set of pins is arranged in the lock cylinder such that the number of pins is equivalent to the number of rollers and the space between each pin in their axial arrangement is equivalent to the space between each of the rollers. 
     
     
         8 . Locking assembly according to  claim 6 , wherein the lock cylinder comprises a keyway for insertion of the key, with said keyway comprising two grooves placed symmetrically on either side of the keyway so that rollers which are of larger diameter than the thickness of the blade can pass through the keyway. 
     
     
         9 . Locking assembly according to  claim 5 , wherein at least one roller has an annular groove around its circumference to cooperate with the end of a pin.