Patent ID: 9175500
Filing Date: 2015-11-03
Classification: B21D,E05B,Y10T

Abstract:
1. A cylinder guard for a deadbolt lock, the cylinder guard comprising: a single-piece body defining a generally cylindrical wall having a predetermined thickness and a longitudinal axis; wherein the cylindrical wall of the single-piece body includes a face portion and an inner portion; wherein the face portion has a face end located at a forward opening of the single-piece body; wherein the inner portion of the single-piece body extends axially rearwardly from the face portion to a first terminus; wherein the wall of the single-piece body includes a doubled portion extending radially outwardly from the first terminus and thence axially forwardly from the first terminus generally parallel to the wall inner portion to a second terminus, to form an axial flange; wherein the wall extends radially outwardly from the second terminus to form a radial flange; wherein at least a portion of the doubled portion of the single-piece body is sized to fit at least partially within a bore in a door configured to receive a portion of the deadbolt lock; wherein the at least portion of the doubled portion of the single-piece body and the at least portion of the wall that extends radially outwardly from the second terminus are configured to engaged the periphery of the bore; wherein the first terminus is located about the lower-most portion of the single-piece body opposite the face end located at the forward opening of the single-piece body; and wherein the wall further includes a crush zone intermediate the doubled portion of the single-piece body and the face portion to attenuate the energy applied by an attack on the deadbolt lock that is transferred to the axial and radial flanges, and wherein the crush zone of the single-piece body is formed of one of deep drawing steel and drawing steel.