Padlock

• US 7,210,318 B2
• Filed: 06/07/2006
• Issued: 05/01/2007
• Est. Priority Date: 09/29/2003
• Status: Expired due to Fees

• Current Assignee: Chun Te Yu
• Original Assignee: Chun Te Yu
• Inventors: Yu, Chun Te
• Primary Examiner(s): Gall; Lloyd A.
• Application Number:
  US11/448,087
• Publication Number:
  US 20060218981A1
• Time in Patent Office: 328 Days
• Field of Search: 70/21, 70/25, 702/84, 702/85, 70/38.R, 70/38.A, 70D/IG.63, 70D/IG.71
• US Class Current: 70/21
• CPC Class Codes: E05B 35/105 Locks allowing opening by official authorities, e.g. master key opening of luggage locks by customs officials
• CPC Class Codes: E05B 37/0034 actuated by either
• CPC Class Codes: E05B 37/025 in padlocks
• CPC Class Codes: Y10S 70/63 Multiple locks
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/7141 Combination and key
• CPC Class Codes: Y10T 70/7147 Combination or key

Abstract

A padlock comprises a lock body, a shackle, a block member, an elastic member, 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, and the shackle has a first end movably installed in the lock body and a second end. The block member is movably connected to the lock body and comprises a button provided for retaining the second end of the shackle in the locked position, a supporter protruding from the button, and a base protruding from the supporter. The elastic member is installed around the button and has one end against the lock body and the other end against the supporter. The combination locking device is installed within the lock body for controlling movements of the shackle. The first end of the shackle is movable to the unlocked position when the combination locking device is unlocked. The key locking device is installed within the lock body and connected to the base of the block member for controlling movements of the shackle. The block member is movable axially, when the key locking device is operated 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 in the lock body and a second end;

a block member, movably connected to the lock body and comprising a button provided for retaining the second end of the shackle in the locked position, a supporter protruding from the button, and a base protruding from the supporter;

wherein the supporter and the base are installed within the lock body;

an elastic member, installed around the button and having one end against the lock body and the other end against the supporter;

a combination locking device, installed within the lock body for controlling movements of the shackle, wherein the first end of the shackle is movable to the unlocked position when the combination locking device is unlocked; and

a key locking device, installed within the lock body and connected to the base of the block member for controlling movements of the shackle, wherein the block member is movable axially, when the key locking device is operated by a key.

2. The padlock of claim 1, wherein the base of the block member has an inclined surface and the key locking device comprises:

a body;

a rotor, installed in the body and having a first end for receiving the key and a second end extending from the body; and

a control unit, connected to the second end of the rotor and having a slope surface engageable with the inclined surface of the base.

3. The padlock of claim 1, wherein the button of the block member has a recess for receiving the second end of the shackle and the recess is formed on a top surface of the button.

4. The padlock of claim 2, wherein the inclined surface of the base has a hole therein and the slope surface of the control unit has a cylinder thereon so as to engage with the hole.