Padlock

• US 20060027000A1
• Filed: 10/11/2005
• Published: 02/09/2006
• Est. Priority Date: 12/03/2003
• Status: Active Grant

• Current Assignee: Chun Te Yu
• Original Assignee: Chun Te Yu
• Inventors: Yu, Chun Te
• Granted Patent: US 7,121,123 B2
• Time in Patent Office: Days
• US Class Current: 70/21
• CPC Class Codes: E05B 37/025 in padlocks
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/463 Long leg engaged

Abstract

A padlock comprises a lock body, a shackle, a combination locking device and a key locking device. The shackle is movable relative to the lock body between a locked position and an unlocked position. The combination and key locking devices are installed within the lock body respectively for controlling movements of the shackle. Additionally, the combination locking device has a frame for receiving a first end of the shackle and a combination unit connected to the frame, which is movable when the combination unit is unlock whereby a second end of the shackle is movable to the unlock position. Furthermore, the key locking device comprises a block unit for locking the first end of the shackle and a key unit connected to the block unit, which is movable when the key unit is unlocked by a key.

Claims

1. A padlock comprising:

a lock body;

a shackle movable relative to the lock body between a locked position and an unlocked position, the shackle having a first end movably installed within the lock body and a second end retainable within the lock body in the locked position, wherein the first end has a stop at a distal end thereof;

a combination locking device installed within the lock body for controlling movements of the shackle, wherein the combination locking device comprises a frame provided for receiving the first end of the shackle and a combination unit connected to the frame, which is movable upwardly and downwardly when the combination unit is unlocked, whereby the second end of the shackle is movable to the unlocked position, wherein the frame has a slot, a first opening intercommunicated with the slot for allowing the first end of the shackle to enter therefrom, and a second opening; and

a key locking device installed within the lock body for controlling movements of the shackle, wherein the key locking device comprises a block unit for blocking the first end of the shackle from moving and a key unit connected to the block unit, which is movable when the key unit is unlocked by a key, wherein the block unit has a block end against the stop of the first end through the second opening and a connecting end connected to the key unit.

2. The padlock of claim 1, wherein the key unit comprises a body, a rotor installed in the body and a driving rod protruding from the rotor for connecting to the connecting end of the block unit.

3. The padlock of claim 2, wherein the connecting end of the block unit is pivotally connected to the driving rod of the key unit.

4. The padlock of claim 2, wherein the driving rod of the key unit has a notch for receiving the connecting end of the block unit, whereby the connecting end of the block unit is movable within the notch.

5. The padlock of claim 3, wherein the combination locking device further comprises a spring plate installed within the frame, the spring plate having two bends at two ends thereof respectively, and the two bends of the spring plate are provided for retaining the stop of the first end of the shackle when the shackle moves to either one of the locked position and the unlocked position.