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(11)    Patent No :    AP 2015    (73) Applicant(s)       
(21)    Application No :    AP/P/2006/003540    WINLOC AG, P.O. Box 4233, Baarerstrasse 43, CH-6304,       
            Zug,       
                   
(22)    Filing Date :    13.09.2004    Switzerland       
(24)    Date of Grant &    23.07.2009           
                   
(45)    Publication :

(30)    Priority Data                    (72) Inventors   
    (33) Country    (31) Number    (32) Date    WIDEN Bo, Sweden   
    US            60/504,202        22.09.2003           
    US            10/913,519        09.08.2004    (74) Representative   
(84)    Designated State                   
    BW    GM    GH    KE    LS    MW    MZ   NA   SL    HONEY & BLANCKENBERG   
    SD    SZ    T Z    UG    ZM    ZW               
(51)    International    Classification    E05B19/06 (2006.01)    E05B27/00 (2006.01)   
                            E05B27/04 (2006.01)       


(54)    Title

A lock and key system with extra code combinations

(57)    Abstract

A high security lock key system with an increased number of code combinations is disclosed. The blade of the key has a wave -like guiding surface (105) at the side of the key blade which, upon insertion into an associated lock having a rotatable key plug, engages with one or more side locking tumblers (206) in the lock cooperating with a side locking mechanism for locking the key plug against rotation. The key blade has an extra code level (121) located at a longitudinally extending shelf surface, .viz. at the upper boundary of the side material region where the wave-like guiding surface is cut at the side of the key blade.

(56)    Documents Cited :    US 4 756 177 A   GB 2 055 947 A   US 5 067 335 A

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