| 摘要 |
A portable jack-frame apparatus allows rescue personnel to rapidly force open a partially crushed automobile body and to passively hold open the aperture that they make so that they can remove a trapped accident victim from the vehicle. The invention provides a locking jack frame that can be: 1) inserted into a restricted opening in a car body, using a combination of pin-set telescoping extensions and a slidable lock to attain a best initial fit position; 2) used with a hydraulic actuator to forcibly make an opening large enough for rescue access; 3) employed to passively hold the opening in the enlarged position after the actuator is removed; and 4) be released and removed from the enlarged opening without further use of the hydraulic actuator.
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