Padlock with Resettable Password

摘要

A padlock whose password can be decoded and reset, consists of lock body, shackle and lock cup. In one side of the shackle resides the lock cup, a volute lock core and a blade. In the other side of the shackle resides letter wheels. All of these spare parts place together inside of the lock body and construct a completed product. The keyhole in the blades has a master key. The letters wheel links and works with the volute lock core by a moveable/loose piece, used for resetting the passwords. If the original password is garbled, the padlock will not unlock. In such a case, the master key will be used wherein the key is inserted into the volute lock core and rotated. That causes the moveable piece to move against the letter wheels and allows resetting of the password.

主权项

1. A manually-operated padlock movable from a locked state to an unlocked state upon inputting a password, comprising:
a lock body; a shackle; a lock cup; a volute lock core; a plurality of character wheels; a loose piece configured to contact the character wheels for resetting the password; and a plurality of blades defining a keyhole therein for receiving an end of a master key, wherein a first side of the shackle contains the lock cup, the volute lock core and the blades; and wherein a second side of the shackle contains the plurality of character wheels, a portion of which extends from the lock body, and wherein said character wheels link to and cooperate with the volute lock core by said loose piece such that said loose piece, upon inserting and turning of the master key in the keyhole, moves the character wheels to allow resetting of the password.