| 摘要 |
<p>The coded key (90) of a lock apparatus has a head portion (91) and a shank portion (92) which has a cross-section in the form of a circular sector with first and second planar surfaces (93, 94) that extend along the length of the shank portion (92), and a curved surface (95) that interconnects the first and second planar surfaces (93, 94) and that has an arc length greater than 180 DEG . The shank portion (92) is formed with a plurality of key bit projections and key bit grooves on one of the first and second planar surfaces (93, 94). The key bit projections and the key bit grooves have inclined actuating surfaces (921) that form different angles to set the code of the key (90). The angles are in a range from 0 DEG to about 180 DEG . <IMAGE></p> |
