| 摘要 |
A restraint locking mechanism provides a spring for biasing the bolt toward the jaw, and for resisting movement of the stop when the stop is in the double lock position. The resistance provided by the spring to movement of the stop increases to a maximum level of resistance as the stop is moved toward the single lock position, and then decreases, as contrasted with providing maximum resistance at the beginning of the stop's movement, and no resistance thereafter. Such a locking mechanism is more difficult to pick, and is less likely to be moved from its double lock position to its single lock position, by a blow to the locking mechanism.
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