Key for a lock cylinder

Details Key for a lock cylinder Key for a lock cylinder

E - Fixed Constructions

05

B

70/57

E05B 19/02 (2006.01) E05B 19/00 (2006.01)

Patent

CA 1270124

Abstract KEY FOR A LOCK CYLINDER For increased security the key (2; 40; 44) has one or more blade portions (43; 45, 46; 5, 6). The longitudinal central plane (A, B) of the or each blade portion is offset from the guide region (42; 7) running along the back edge of the key shaft (3). Furthermore, the or each blade portion is connected to the guide region by means of a bridging portion (14, 14') which forms an obtuse angle (alpha) with the guide region, as well as forming an obtuse angle with the blade portion. In one preferred embodiment two blade portions (45, 46; 5, 6) are provided; they may be of the same cross-sectional shape (Figure 2) or symmetrical (Figure 11). The blade portions and guide region may be divided into two portions to provide partner keys (Figure 12).

523792

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