Patent ID: 7707864
Filing Date: 2010-05-04
Classification: E05B,Y10S,Y10T

Abstract:
1. A lock comprising: a housing; a plug located in the housing, the plug adapted to rotate in the housing about an axis; an insert adapted to provide a shaft located in the plug; and a moveable element comprising a first region with a first diameter, a second region with a second diameter that is less than the first diameter, the moveable element located at least partly in the housing, the moveable element adapted to move in the insert in an axis of motion substantially radial relative to the axis of the plug and to prevent rotation of the plug when the moveable element is in a first position along the axis of motion and allow rotation of the plug when the moveable element is in a second position along the axis of motion, wherein the second region is located closer to the axis of the plug than the first region, wherein a protrusion, with a third diameter that is greater than the second diameter and less than the first diameter, protrudes from the second region, and wherein a difference between one half of the first diameter and one half of the third diameter is greater than twice a difference between one half the diameter of the shaft and one half of the first diameter.