Security lock
AssigneeUltrafab (Proprietary) Limited
InventorHendrik Johannes VAN NIEKERK
Life of this patent
Estimating the term…
Abstract
This invention concerns a security lock for use with a lock unit. The security lock has a base, a casing in which the base is, in use, received, an elongate locking bolt, biasing means for urging the locking bolt towards its inoperative position, an externally accessible operating member for moving the locking bolt and a locking mechanism which is used to lock the bolt in its operative position. A securing mechanism is operable between a locked state in which the base and casing are locked to each other and a released state in which the base and casing are released from each other. A securing element is held captive such that it remains in position irrespective of whether the securing mechanism is in its locked or released state.
Claims22
A security lock for use with a lock unit, the security lock including:
- a base;
- a casing in which the base is, in use, received;
- an elongate locking bolt which is movable between an first, operative position in which the bolt projects from the base and a second, inoperative position in which the bolt is substantially withdrawn;
- biasing means for biasing the locking bolt towards the withdrawn inoperative position;
- an externally accessible operating member extending from the casing and cooperating with the locking bolt to move it against its bias from its inoperative to its operative position, wherein the operating member is substantially inaccessible or ineffective when the locking bolt is in its operative position;
- a locking mechanism for retaining the locking bolt in its operative position, wherein the locking mechanism in use engages the lock unit such that unlocking of the lock unit releases the locking mechanism to allow the locking bolt to move from its operative position to its inoperative position under the action of the biasing means;
- and
- a securing mechanism for securing the base to the casing,
- wherein the securing mechanism includes a securing element which is operable to move the securing mechanism between a locked state in which the base and casing are locked to each other and a released state in which the base and casing are released from each other,
- wherein the securing element is held captive such that it remains in position irrespective of whether the securing mechanism is in its locked or released state.
9-12. (canceled)
(canceled)
A security lock for use with a lock unit, the security lock including:
- a base;
- a casing in which the base is, in use, received;
- an elongate locking bolt which is movable between an first, operative position in which the bolt projects from the base and a second, inoperative position in which the bolt is substantially withdrawn;
- biasing means for biasing the locking bolt towards the withdrawn inoperative position;
- an externally accessible operating member extending from the casing and cooperating with the locking bolt to move it against its bias from its inoperative to its operative position, wherein the operating member is substantially inaccessible or ineffective when the locking bolt is in its operative position;
- a locking mechanism for retaining the locking bolt in its operative position, wherein the locking mechanism in use engages the lock unit such that unlocking of the lock unit releases the locking mechanism to allow the locking bolt to move from its operative position to its inoperative position under the action of the biasing means;
- and
- a removable lock unit retaining and aligning formation for retaining and aligning the lock unit relative to the locking mechanism.
Dependencies are inferred from the claim text.