Cylinder lock including multiple cooperating sidebars for controlling the lock

A lock assembly comprising:

• a housing including a bore and a locking slot extending longitudinally along an inner surface of said bore;
• a plug rotatably disposed within the bore of said housing, said plug including a sidebar slot and a keyway;
• a plurality of code pins transversely mounted for radial movement within said plug, each code pin comprising binding features, a code hole, and a key engaging surface disposed within said keyway;
• and
• a sidebar assembly disposed with the sidebar slot formed in said plug and comprising a binding bar and a locking bar operatively coupled together, said binding bar comprising cam features and binding projections, and said locking bar comprising code points,
• wherein a portion of said sidebar assembly initially extends into the locking slot and the sidebar assembly and the locking slot are cooperatively configured to permit only partial rotation of the plug with respect to the housing, and wherein the cam features of said binding bar engage a portion of the locking slot as the plug is partially rotated with respect to the housing so that the binding bar is urged out of the locking slot and into the plug such that the binding projections of the binding bar engage the binding features of the code pins to prevent radial movement of the code pins,
• wherein the locking bar is configured for movement with the binding bar out of the locking slot to permit rotation of the plug if the code pins are positioned by a key engaging the key-engaging surfaces to align the code holes of the code pins with the code points of the locking bar, so that the code points may enter the code holes, and
• wherein the locking bar is configured for movement with respect to the binding bar if the code pins are not positioned with the code holes aligned with the code points and movement of the locking bar with the binding bar is blocked by the code points contacting the code pins, thereby preventing the locking bar from moving out of the locking slot, thus preventing further rotation of the plug.