Combination and key operated locks with indicators

• US 7,832,238 B2
• Filed: 10/27/2007
• Issued: 11/16/2010
• Est. Priority Date: 08/05/2003
• Status: Active Grant

• Current Assignee: Eastern Company The
• Original Assignee: Eastern Company The
• Inventors: Lu, Jian-Bing, Misner, Michael O.
• Primary Examiner(s): Barrett; Suzanne D
• Application Number:
  US11/978,238
• Publication Number:
  US 20080295548A1
• Time in Patent Office: 1,116 Days
• Field of Search: 70/21, 70 25- 30, 70/38.A, 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 37/0058 by axial disengagement between hub and rim of tumbler discs or rings
• 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 65/5261 with simultaneously operating double bolts
• CPC Class Codes: Y10T 70/415 Combination and/or key-controlled
• CPC Class Codes: Y10T 70/424 Sliding
• CPC Class Codes: Y10T 70/5031 Receptacle
• CPC Class Codes: Y10T 70/7141 Combination and key
• CPC Class Codes: Y10T 70/7147 Combination or key
• CPC Class Codes: Y10T 70/7153 Combination
• CPC Class Codes: Y10T 70/8027 Condition indicators
• CPC Class Codes: Y10T 70/8459 Housings

Abstract

Locks for luggage, travelcases, briefcases and the like that can be operated by setting a combination or by using a key include an indicator to provide a signal in response to use of the key. The locks retain relatively movable components in latched engagement when locked, and permit relative movement of the components when unlocked. In some embodiments, the indicator provides a visual signal if an associated travelcase has been opened for inspection by unlocking the associated lock using a key; and, in some embodiments, the indicator can be reset upon entry of a proper combination.

Claims

1. A visual signal indicator movable on a padlock to provide a visual signal in response to a key being used in a key opening of the padlock and being resettable only after a combination has been set on the padlock, wherein relatively movable portions of the padlock are released from a condition of locked engagement by setting the combination, and, alternatively, by using the key in the key opening.

2. A padlock having a combination mechanism and a key mechanism each being independently capable of unlocking the padlock, and having a member that moves in response to the use of the key mechanism to alter the visual appearance of the padlock, with the member being resettable to restore the appearance of the padlock after use of the combination mechanism.

3. An indicator on a padlock to signal visually in response to the use of a key in a key opening of the padlock, and being resettable once a combination is set on the padlock, wherein the padlock is adapted to release from a locked condition in response to the use of the key and, alternatively, in response to the setting of the combination.

4. A padlock lockable by first and second components that can be released from latched engagement in a first way by use of a key with a key mechanism and in a second way by setting a combination with a combination mechanism, wherein the use of the key causes a visual signal to be set that can be reset by moving a component of the combination mechanism.

5. A padlock having a housing that shields from access a location within the housing where first and second components can latchingly engage to lock relatively movable members of the padlock, wherein the first component can be moved from the location by use of a key to unlock the lock, wherein the second component can be moved from the location by setting a combination to unlock the lock, and wherein the housing also protectively encloses a movable indicator that changes position to provide a signal through an opening of the housing in response to the movement of the first component by the use of the key.

6. The padlock of claim 5 wherein the first and second components are capable of establishing a plurality of latched engagements at the location, and all of the established latched engagements are released when the key is used and when the combination is set.

7. A lock having a combination mechanism extending along a first axis that can be used to open the lock by turning at least one dial of the combination mechanism about the first axis to set a combination, a key mechanism extending along a second axis that can be used to open the lock by turning at least one member of the key mechanism about the second axis, and an indicator extending along a third axis that can turn relative to the third axis to provide a visual signal in response to use of the key.

8. A lock having a plurality of relatively movable latching components movable relative to a housing of the lock into and out of latched engagement, a key operated mechanism and a combination operated mechanism each being usable to move different ones of the latching components to release the latched engagement, and a resettable indicator that provides a visual signal in response to use of the key operated mechanism.

9. A lock having a first locking member and a second locking member capable of latchingly engaging at a location within a housing of the lock, wherein the latching engagement can be released by using a key to move the first locking member and alternatively by setting a combination to move the second locking member, and the lock provides a visual signal in response to using the key.

10. A lock operable by setting a combination and having a signal surface that becomes visible once a key is used to release a locked condition of the lock, and having a reset member movable to reset the signal surface once a combination is set.

11. The lock of claim 10 wherein the reset member extends through a housing opening of the lock and can be manually moved to reset the signal surface.

12. A combination operable lock having a pair of components that latchingly engage when the lock is locked, one of which can be moved by the use of the key to unlock the lock, and the other of which can be moved by setting a combination to unlock the lock, and having a reset member that can be grasped and moved to reset an indicator that provides a signal in response to the use of the key.

13. The lock of claim 12 wherein the reset member also can be moved to change the combination.

14. A lock having a combination mechanism and a key mechanism each capable of moving different components of the lock to unlock the lock, and providing a signal in response to use of a key in the key mechanism, wherein the signal can be reset by moving a reset element of the lock relative to a housing of the lock at a time when the lock is unlocked.

15. The lock of claim 14 wherein the different components are movable toward each other in one manner to establish latched engagement therebetween, and are movable in a different manner to release the latched engagement.

16. A lock having first and second latchingly engageable members releasable from latched engagement by using a key to move the first member in a first manner and, alternatively, by setting a combination to move the second member in a second manner, and providing a visual signal in response to the first manner of movement of the first member.

17. The lock of claim 16 wherein an indicator is movable between first position to provide a specific visual signal and a second position to cease providing the specific visual signal.

18. The lock of claim 17 wherein the indicator is biased toward at least a selected one of the first and second positions when near the selected one of the first and second positions.

19. The lock of claim 17 wherein the indicator is biased toward the first position when near the first position, and toward the second position when near the second position.

20. A lock having a key mechanism and a combination mechanism each usable separately from the other to unlock the lock, and having a key use responsive indicator that alters the appearance of the lock in a way that can be reversed by moving a reset element of the lock relative to a housing of the lock.

21. The lock of claim 20 wherein a graspable portion of the reset element extends through an opening of a housing of the lock.