| 摘要 |
A jack structure wherein a rigid housing includes a plurality of stacked pneumatic bags within the housing, wherein the stacked pneumatic bags are arranged for selective inflation by use of a pneumatic compressor that in turn is operative through an electrical supply line that is arranged to receive electrical energy from the cigarette lighter or have clips to attach to positive and negative posts of car battery of an associated vehicle. A valve assembly permits selective inflation and deflation of the pneumatic bag structure within the housing.
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