| 摘要 |
This invention relates to a method of reproducing a coded reference key by assembling a number of partial reference key silhouettes. The partial reference key silhouettes are prepared by cutting various vertical depths of cut at various horizontal key shank positions. Each partial reference key silhouette may have one (or more) vertical depths of cut at one (or more) horizontal key shank positions. Supplying a coded reference key silhouette by assembling a number of partial reference key silhouettes greatly increases the efficiency of reproducing a standard key for a lock whose coded depths and shank position cuts are known. The reference key silhouettes comprise a head (1) and a key shank (2). The horizontal key shank positions are numbered one through five from the head to the tip of the shank. Various depths of cut from a number nine cut (the deepest vertical cut) to a number one cut (the shallowest vertical cut) are made in the partial reference key silhouettes. These partial reference key silhouettes may then be assembled and placed in a standard key cutting/reproducing machine. The key cutting machine reproduces the desired reference key silhouette on a blank key thus reproducing the required reference key for use in the known coded lock. A locksmith may reproduce coded reference keys easily and economically by use of the partial reference key silhouette method. |
