FIELD: mechanical engineering; lifting and transportation facilities; jacks. SUBSTANCE: jack has housing and two extensible rods made of material with thermomechanical memorized shape effect. Electric heating elements are secured on rods. Jack has also supports for engagement with one of rod end faces. Rods are rigidly fitted on axle by means of fastening rims. Heating elements are provided with slots accommodating the axles. Jack has also sliders with electromagnets interacting with permanent magnets of sliders. EFFECT: reduced overall dimensions, increased cooling rate. 6 dwg
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