Dual padlock

• US 7,552,607 B2
• Filed: 08/21/2007
• Issued: 06/30/2009
• Est. Priority Date: 03/13/2007
• Status: Expired due to Fees

• Current Assignee: Yao-Kun Yang
• Original Assignee: Yao-Kun Yang
• Inventors: Yang, Yao-Kun
• Primary Examiner(s): BARRETT, SUZANNE LALE DINO
• Application Number:
  US11/842,623
• Publication Number:
  US 20080223088A1
• Time in Patent Office: 679 Days
• Field of Search: 70/21, 70 25- 28, 702/84, 702/85, 704/32
• 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: E05B 67/003 Chain, wire or cable locks alarms therefor E05B45/005; E05B69/006 takes precedence
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/7147 Combination or key
• CPC Class Codes: Y10T 70/8027 Condition indicators

Abstract

A dual padlock of the present invention includes a housing, a shackle, a locking device, a locking spring, a transmission device, a key lock assembly, a code lock assembly, and a button member. The shackle is openably provided on the housing. The locking device is received in the chamber of the housing and engaged with the shackle. The key lock assembly includes a key cylinder connected to the transmission device and the locking device. The button member is connected to a shaft of the code lock assembly and the lock device. Therefore, user may insert a key into the key lock assembly and turns to unlock the padlock. User also may input the right code to the code lock assembly that will unlock the pad lock too.

Claims

1. A dual padlock, comprising:

a housing having a chamber inside, two top bores, a through bore, a button bore, and a plurality of dial bores;

a shackle having a pivot end and a movable end inserted into the top bores of the housing respectively, wherein the pivot end is formed with a head portion in the chamber, and the movable end has a slot;

a locking device, which is received in the chamber of the housing, having a locking portion to be moved between a first position, in which the locking portion is engaged with the slot of the shackle, and a second position, in which the locking portion is disengaged with the slot of the shackle;

a locking spring, which is received in the chamber of the housing, urging the locking device;

a key lock assembly including a key cylinder, which is received in the chamber of the housing and has an end received in the through bore, having a keyhole and a spiral slot;

a transmission device having an end received in the spiral slot of the key cylinder of the key lock assembly and opposite end touching the locking device to be moved by the key cylinder;

a code lock assembly, which is received in the chamber of the housing, having a shaft, a plurality of numeral wheels, which are fitted to the shaft and received in the dial bores respectively, and a return spring urging the shaft; and

a button member, which pivoted on an interior side of the housing, having a first arm, which is received in the button bore of the housing and touches the shaft of the code lock assembly, and a second arm touching the locking device;

the padlock further comprising an indicator received in the chamber of the housing;

wherein the second arm of the button member is formed with a curved face, and the indicator has a sliding shaft sliding on the curved face.

2. The dual padlock as defined in claim 1, further comprising a first spring received in the chamber of the housing and urging the movable end of the shackle.

3. The dual padlock as defined in claim 2, further comprising a block urged by the first spring to touch the movable end of the shackle.

4. The dual padlock as defined in claim 2, further comprising a second spring received in the chamber of the housing and urging the pivot end of the shackle.

5. The dual padlock as defined in claim 1, wherein the locking portion of the locking device has a sloping face.

6. The dual padlock as defined in claim 1, wherein the slot adjacent to the movable end of the shackle is annular.

7. The dual padlock as defined in claim 6, wherein the locking portion of the locking device has an arched gap to be engaged with the slot of the shackle.

8. The dual padlock as defined in claim 1, wherein the shaft of the code lock assembly is formed with an extending wall at an end thereof to be urged by the return spring to touch the first arm of the button member.

9. The dual padlock as defined in claim 1, wherein the shackle includes a cable and two connecting devices on opposite ends of the cable.

10. A dual padlock, comprising:

a housing having a chamber inside, two top bores, a through bore, a button bore, and a plurality of dial bores;

a shackle having a pivot end and a movable end inserted into the top bores of the housing respectively, wherein the pivot end is formed with a head portion in the chamber, and the movable end has a slot;

a locking device, which is received in the chamber of the housing, having a locking portion to be moved between a first position, in which the locking portion is engaged with the slot of the shackle, and a second position, in which the locking portion is disengaged with the slot of the shackle;

a locking spring, which is received in the chamber of the housing, urging the locking device;

a key lock assembly including a key cylinder, which is received in the chamber of the housing and has an end received in the through bore, having a keyhole and a spiral slot;

a transmission device having an end received in the spiral slot of the key cylinder of the key lock assembly and opposite end touching the locking device to be moved by the key cylinder;

a code lock assembly, which is received in the chamber of the housing, having a shaft, a plurality of numeral wheels, which are fitted to the shaft and received in the dial bores respectively, and a return spring urging the shaft;

a button member, which pivoted on an interior side of the housing, having a first arm, which is received in the button bore of the housing and touches the shaft of the code lock assembly, and a second arm touching the locking device; and

an indicator, which is received in the chamber of the housing and is pivoted on the housing, to be moved by the transmission device between a third position, in which the indicator is on a path of the transmission device, and a fourth position, in which the indicator is on a path of the button member, and a window on the housing that the indicator is visible through the window when the indicator is moved to the fourth position;

wherein the second arm of the button member is formed with a curved face, and the indicator has a sliding shaft sliding on the curved face.

11. The dual padlock as defined in claim 10, wherein further comprising a third spring received in the chamber of the housing and urging the indicator and the housing respectively.