| 摘要 |
There is provided a vault cover assembly including a vault frame and a vault door. The vault door is pivotally connected to the vault frame. The vault door is pivotable between open and closed positions relative to the vault frame. A spring-biased support arm is connected to the vault door and is moveable between locked and unlocked configurations relative to the vault door. The spring-biased support arm is biased toward the locked configuration. The spring-biased support arm includes a locking member that is engageable with the vault frame when the spring-biased support arm is in the locked configuration. The vault door is disposed in the open position upon engagement between the locking member and the vault frame. The vault door is pivotable between the open and closed positions when the spring-biased support arm is in the unlocked configuration.
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