E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 27/00 (2006.01) E05B 19/00 (2006.01) E05B 19/02 (2006.01)
Patent
CA 2106376
2106376 9217669 PCTABS00016 A cylinder lock assembly (11) includes a core (82), a key plug (80) mounted for rotation in the core (82), and a key (10). The key plug (80) is formed to include a keyway (108) and a plurality of tumbler pin bores (110) opening into the keyway (108). The key (10) has a bow (12) and a blade (14) appended to the bow (12). The blade (14) includes a bitted portion (22) and a stop shoulder (56) at the tip of the blade (14) for positioning the bitted portion (22) in alignment with the tumbler pin bores (110). A separate drive member (16) is provided on the key (10) for rotating the key plug (80) relative to the core (82) to actuate the cylinder lock assembly (11). The drive member (16) is located between the bitted portion (22) and the bow (12) and is configured to cooperate with a bottom portion of the key blade (14) to provide the primary torque or force for rotating the key plug in response to turning of the key (10) in the cylinder lock assembly (11) so that the bitted portion (22) and an offset portion (26) of the blade (14) do not carry substantial torque transmission load between the key (10) and the key plug (80) to rotate the key plug (80) in the core (82).
Best Lock Corporation
Smart & Biggar
LandOfFree
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