Patent ID: 8272312
Filing Date: 2012-09-25
Classification: F41A

Abstract:
1. A breech for a repeating rifle and a system casing comprising: a breech guide; a locking chamber arranged in the breech guide; a locking sleeve arranged concentrically about a rear part of the locking chamber, the locking sleeve having a plurality of locking elements; an expansion device constructed as a support sleeve, the expansion device moving the plurality of locking elements between an inner unlocked position and an outer locked position engaging in a locking groove of a barrel of the rifle and the support sleeve moving in an axial direction between the rear part of the locking chamber and the locking sleeve, wherein the support sleeve is activated by a breech lever pivoted by a chamber stem; and first and second cams separately rotatable with respect to the other, each of the first and second cams having a front cam surface engageable with the breech lever and rear cam surface engageable with the system casing.