Lock
First Claim
Patent Images
1. A lock comprising:
- a lock core changeable between a locking position and a releasing position; and
an indicator connected to the lock core so that the indicator is in a first position when the lock core remains in the locking position, and is in a second position when the lock core is turned to the releasing position and returned to the locking position, and is in a third position when the locked core is turned to the releasing position and remains in the releasing position.
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Abstract
A lock includes a lock core and an indicator. The lock core can be turned between a locking position and a releasing position. The indicator is connected to the lock core so that the indicator is in a first position when the lock core is in the locking position. The indicator is in a second position when the lock core is turned to the releasing position and returned to the locking position. The indicator is in a third position when the locked core is in the releasing position.
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Citations
20 Claims
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1. A lock comprising:
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a lock core changeable between a locking position and a releasing position; and an indicator connected to the lock core so that the indicator is in a first position when the lock core remains in the locking position, and is in a second position when the lock core is turned to the releasing position and returned to the locking position, and is in a third position when the locked core is turned to the releasing position and remains in the releasing position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A lock comprising:
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a key-operable lock core operable by either of a first key and a second key; and an indicator changeable in position for indicating whether the key-operable lock core has been turned to a releasing position by the first key, and returnable by the second key.
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Specification