Patent ID: 8001817
Filing Date: 2011-08-23
Classification: E05B,G07C,Y10T

Abstract:
1. A mechanical key comprising a key plate formed with a coded key groove that mechanically locks and unlocks a first locking device and a second locking device different from the first locking device, and which is operated by inserting the key plate into a single key cylinder of the first locking device or a single key cylinder of the second locking device, wherein the key plate comprises a key plate body at which a housing part is formed; and a pivoting plate pivotally coupled to the key plate body, the pivoting plate being capable of pivoting at a pivot joint and folding 180 degrees with respect to the key plate body such that the key plate body and the pivoting plate are capable of overlapping to be in a folded state where the pivoting plate is housed in the housing part of the key plate body, and the key plate in the folded state is operated by inserting the key plate into the single key cylinder of the second locking device, and the key plate body and the pivoting plate are capable of non-overlapping to be in an unfolded state where the pivoting plate is not housed in the housing part of the key plate body, and the key plate in the unfolded state is operated by inserting the key plate into the single key cylinder of the first locking device, and wherein the key groove is configured to be an outer groove, and the outer groove is provided on the key plate so as to extend across the key plate body, the pivot joint, and the pivoting plate, in a lengthwise direction, groove depths of the outer groove in a width direction of the key plate body and the pivoting plate varying along said lengthwise direction of the key plate such that the varying groove depths of the outer groove are configured to be read by the single key cylinder of the first locking device or the single key cylinder of the second locking device.