| 摘要 |
A reprogrammable cylinder lock provides a lock system that allows a set of multiple keys with various lengths and cuts to work with a single cylinder lock to create multiple lock combinations. The reprogrammable lock comprises a cylinder core, a plurality of pin locks and a cylinder ring placed over the cylinder core in a first set position within a cylinder housing. The plurality of pin locks is configured such that it is initially nonrotatable. At least two different keys are provided. Upon inserting and rotating a first key into the cylinder core, the first key engages with a first lock combination so that the cylinder core is rotatable within the cylinder housing. Upon inserting and rotating subsequent keys into the cylinder core, the subsequent keys push the cylinder ring to subsequent set positions, create new lock combinations, and rotate the cylinder core within the cylinder housing. |
| 主权项 |
1. A reprogrammable cylinder lock comprising:
a cylinder core, further comprising an axial keyway and a plurality of side slots perpendicular to the axial keyway; a plurality of pin locks movable within the plurality of side slots; a cylinder ring placed over and around the cylinder core in a first set position, wherein the cylinder ring is axially movable along the cylinder core; a cylinder housing enclosing the cylinder core, the plurality of pin locks and the cylinder ring, wherein the plurality of pin locks are biased outward and flush against an internal contour of the cylinder housing such that the cylinder core is initially nonrotatable; and at least a first key and a second key, wherein the first key further comprising a first tip, a first blade and a first cut and the second key further comprising a second tip, a second blade and a second cut, and the second blade is longer than the first blade, wherein upon inserting the first key into the axial keyway and rotating the first key, the first cut engages with the plurality of pin locks, the plurality of pin locks retracts inward within the plurality of side slots into the cylinder core to allow the cylinder core to rotate within the cylinder housing, and wherein upon removing the first key from the axial keyway and inserting the second key into the axial keyway and rotating the second key, the second cut engages with the plurality of pin locks, the second tip axially pushes the cylinder ring in a direction away from the axial keyway to a second set position such that the first key cannot be reused, and the plurality of pin locks retracts inward within the plurality of side slots into the cylinder core to allow the cylinder core to rotate within the cylinder housing. |
