| 摘要 |
The present invention relates to a door jack formed of a lever arm having a first end formed as a foot pedal and a second end connected by a hinge or universal joint to a doorholder. In between the two ends of the lever arm a pivotal piece acting is located on the underside of the lever arm. When a workperson places his foot on the foot pedal and thus presses down the door holder in which the door 14 is contained lifts upward causing the door to be lifted vertically to any desired height. By moving the pedal in the horizontal plane, e.g. parallel to the floor the door will move in the horizontal plane in the opposite direction of the direction of the foot pedal due to the articulating member, e.g. the hinge or the universal joint. This causes the door to aligned in place.
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