Portable rescue device

Details Portable rescue device Portable rescue device

1992-10-02

1993-12-07

Larson, Lowell A.

Metal deforming

By relatively receding work-engaging tool-faces

B21D 112

Patent

active

052674622

ABSTRACT:
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.

REFERENCES:
patent: 2750983 (1956-06-01), Rogers
patent: 3577881 (1971-05-01), Markovics
patent: 3891187 (1975-06-01), Bearden
patent: 4088006 (1978-05-01), Patten
patent: 4273311 (1981-06-01), Rio

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