Back to results
US 10,047,541 B2Granted
Dual locking system with user controllable plate
AssigneeThe Sun Lock Company Ltd.
InventorKarl Lai
Life of this patent
Estimating the term…
Abstract
A dual locking system including a combination mechanism and a key mechanism is provided, including a control plate to control access to the key mechanism. When the control plate is positioned in a blocking position, the control plate blocks access to the key hole of the key mechanism. The control plate can be released from the blocking position by turning the dials of the combination mechanism to the correct combination. The released control plate can be moved to an exposure position, which allows access to the key hole.
Claims9
A locking apparatus comprising:
- a primary locking mechanism comprising a combination mechanism;
- a secondary locking mechanism comprising a key mechanism comprising a key entrance hole;
- and
- a control plate configured to block access to the key entrance hole in a first, blocking position;
- wherein the combination mechanism is configured to control movement of the control plate by permitting movement of the control plate to a second, exposure position to expose the key entrance hole when the locking apparatus is opened by the combination mechanism;
- wherein the locking apparatus is a padlock comprising:
- a lock body;
- and
- a shackle,
- wherein a first, long leg of the shackle is retained inside the lock body and a second leg of the shackle can be released from the lock body from a first locked position to a second opened position by upward movement, when the padlock is opened by the combination mechanism or the key mechanism;
- wherein the control plate comprises at least one cut out section and a wall configured to block access to the key hole;
- and
- wherein when the control plate is in the first, blocking position, the long leg of the shackle is engaged with the control plate in a manner that prevents movement of the control plate.
10 more elements
Dependencies are inferred from the claim text.