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The ornamental design for a safety chain lock for a door or similar structure, as shown as described. |
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FIG. 1 is a frontal perspective view of a safety chain lock for a door or similar structure showing our design.
FIG. 2 is a rear perspective view thereof, having the locking bolt in space relation to the lock.
FIG. 3 is a broken front elevational view showing the locking bolt in space relation to the lock.
FIG. 4 is a broken top plan view thereof.
FIG. 5 is a broken left hand view of the locking mechanism.
FIG. 6 is a right hand view of the lock and bolt mechanism.
Hardesty, Kenneth A., Allen, II, Robert R.
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