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.
Claims18
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.
A control plate, for use in a lock having a combination mechanism and a key mechanism, and configured to be controlled by the combination mechanism, comprising:
- at least one cut out section;
- and
- a wall to block a key entrance hole of the lock when the control plate is in a first, blocking position.
Dependencies are inferred from the claim text.