Swing bolt lock mechanism for preventing premature status switch enabling
AssigneeKaba Mas Corporation
InventorRoss Aker
Life of this patent
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Abstract
A swing bolt lock mechanism for preventing false status switch enabling is described. The lock mechanism is a swing bolt lock mechanism wherein the swing bolt has an inner ramp wall against which a blocker rod is spring-biased. A ramp extension arm is displaceably secured with the swing bolt and provides an extension of the ramp wall whereby the blocker rod may only be displaced when the swing bolt is at its fully locked position whereby to arrest the swing bolt at that position. The displacement of the blocker rod also toggles a lock status switch to provide an indication that the lock is at its locked position. Accordingly, the lock status switch cannot be prematurely actuated.
Claims11
A swing bolt lock mechanism comprising a lock housing, a swing bolt pivotally secured in said lock housing and having a locking portion displaceable in and out of said lock housing between an unlocked and a locked position, a blocker rod having an arresting head formation spring-biased against a ramp wall of said swing bolt, an engageable abutment at an end of said ramp wall, a ramp extension arm displaceably secured with respect to said swing bolt and spring-biased to provide an extension of said ramp wall beyond said engageable abutment and disposed for contact by said arresting head formation, said ramp extension arm having an abutment free end, said ramp extension arm obstructing the displacement of said blocker rod until said swing bolt is displaced to said locked position and said abutment free end of said ramp extension arm is aligned with said arresting head formation of said blocker rod, causing said blocker rod to be displaced for arresting engagement with said engageable abutment at said end of said ramp wall;
- said blocker rod, when reaching said arresting engagement, actuating a lock status switch to provide an indication of said locked position of said swing bolt, wherein said ramp extension arm has a ramp face extending flush with said ramp wall.
Dependencies are inferred from the claim text.