Tamper indicating padlock

• US 8,621,899 B2
• Filed: 11/09/2012
• Issued: 01/07/2014
• Est. Priority Date: 05/27/2005
• Status: Active Grant

• Current Assignee: Sinox Company Limited
• Original Assignee: Sinox Company Limited
• Inventors: Kuo, Yung-Li, Ling, Renny T.
• Primary Examiner(s): BOSWELL, CHRISTOPHER J
• Application Number:
  US13/673,627
• Publication Number:
  US 20130111958A1
• Time in Patent Office: 424 Days
• Field of Search: 70 20- 22, 70/31, 702/84, 702/85, 70330-332, 704/32, 704/35, 704/37, 704/39, 704/41
• 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 39/00 Locks giving indication of authorised or unauthorised unlocking with key identification means E05B35/001; alarm locks E05B45/00
• CPC Class Codes: E05B 67/08 Padlocks with shackles hinged on the case
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/7141 Combination and key
• CPC Class Codes: Y10T 70/7147 Combination or key
• CPC Class Codes: Y10T 70/7407 Operating indicators
• CPC Class Codes: Y10T 70/8027 Condition indicators

Abstract

A travel padlock for securing an article comprises a housing having a shackle, a key lock and a combination lock. An indicator having at least first and second positions is moved from the first position to the second position upon insertion of an object longitudinally into a key hole of the key lock. In at least one embodiment, at least a portion of the indicator extends beyond the exterior of the housing when in the second position. In addition, in at least one embodiment of the present invention the shackle may be rotated to reset the indicator from the second position back to the first position. Furthermore, in at least one embodiment of the present invention the indicator may be reset from the second position back to the first position without rotating the shackle or unlocking the combination lock. Methods of making and using the padlock are also provided.

Claims

1. A padlock for securing an article, the padlock comprising:

a housing;

at least one of a key lock and a combination lock, wherein when a key lock is present, at least a portion of said key lock is located within said housing and said key lock comprises a key way;

a shackle for engaging at least a portion of the article, said shackle at least partially contained within said housing and rotatable upon unlocking at least one of the key lock and the combination lock;

an indicator having at least first and second positions, said indicator projecting at least partially exterior of said housing when in said second position; and

wherein, when the indicator is in the second position and the shackle is locked, the indicator extends along at least a portion of the shackle.

2. The padlock as claimed in claim 1, wherein when at least a key lock is present said indicator moves from said first position to said second position upon insertion of an object longitudinally into said key way and without rotation of the object.

3. The padlock as claimed in claim 2, wherein the object comprises a key or an elongated member.

4. The padlock as claimed in claim 2, wherein said object does not have to be turned within said key way for said indicator to move from said first position to said second position.

5. The padlock as claimed in claim 1, wherein when a key lock and a combination lock are present, at least a portion of the key lock and the combination lock are located within the housing and said indicator moves from said first position to said second position upon insertion of an object longitudinally into said key way without opening either of the combination lock or the key lock.

6. The padlock as claimed in claim 1, wherein when at least a key lock is present the indicator is resettable from said second position to said first position by activating a reset mechanism not requiring rotation of the shackle.

7. The padlock as claimed in claim 6, wherein the reset mechanism comprises a reset device accessible through an aperture in said housing.

8. The padlock as claimed in claim 6, wherein the shackle has a leg portion and said reset mechanism is moveable in a direction transverse to the leg portion of said shackle.

9. The padlock as claimed in claim 6, wherein the reset mechanism can be activated while said shackle is locked.

10. The padlock as claimed in claim 1, wherein when at least a key lock is present an activation mechanism is operatively associated with said indicator, and wherein said indicator is moved from said first position to said second position by contacting said activation mechanism with an object inserted into said key way and without rotation of the object.

11. The padlock as claimed in claim 10, wherein said activation mechanism is movable in a direction substantially parallel to a leg portion of said shackle.

12. The padlock as claimed in claim 1, wherein the indicator is tactilely discernible in its second position.

13. The padlock as claimed in claim 12, wherein the second position of the indicator is visually discernible.

14. The method as claimed in claim 1, wherein when a key lock and combination lock are present, a portion of the combination lock is positioned within said housing and the combination lock and key lock are independently operable to lock and unlock the shackle.

15. A method of making a lock, comprising:

a. providing a housing;

b. providing a movable shackle in association with said housing;

c. positioning at least a key lock in said housing;

the key lock operable to lock and unlock the shackle; and

d. positioning an indicator in the housing, the indicator movable from a first position to a second position upon an object being longitudinally inserted into the key lock and without rotation of the object.

16. The method claimed in claim 15, further comprising providing a reset mechanism for resetting the indicator from the second position to the first position.

17. The method as claimed in claim 15, further comprising providing a reset mechanism within said housing wherein said reset mechanism resets said indicator without movement of said shackle.

18. The method as claimed in claim 15, further comprising providing a reset mechanism within said housing wherein said reset mechanism resets said indicator without insertion of an object into the key lock.

19. The method as claimed in claim 15, further comprising positioning a combination lock in said housing, wherein the combination lock and key lock are independently operable to lock and unlock the shackle.

20. A lock for securing an article, the lock comprising:

a housing;

a key lock, wherein at least a portion of said key lock is located within said housing and said key lock comprises a key way;

a shackle for engaging at least a portion of the article, said shackle at least partially contained within said housing and rotatable upon unlocking of the key lock;

an indicator having at least first and second positions, wherein said indicator moves from said first position to said second position upon insertion of an object longitudinally into said key way and without rotation of the object; and

a reset mechanism operably interconnected to said indicator for moving said indicator from said second position back to said first position without moving said shackle and without use of a key.

21. The lock of claim 20, further comprising a combination lock, wherein at least a portion of said combination lock is located within said housing.

22. The lock as claimed in claim 20, wherein the reset mechanism comprises an aperture in said housing and a reset member within said aperture.

23. The lock as claimed in claim 21, wherein the indicator is resettable from said second position to said first position by unlocking said combination lock and rotating said shackle.

24. The lock as claimed in claim 20, wherein said indicator is tactilely discernible in said second position.

25. In a lock having at least a key portion having a key way to receive a key to open the lock, a method of determining if the key portion has been tampered with, comprising:

a. locking the lock;

b. causing an indicator to change from a first state to a second state by inserting an object into the key way portion of the key portion of the lock and without other movement of the object in the key way.