Lifting jack system and method of use
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United States of America Patent
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Jun 5, 2018
Issued Date -
N/A
app pub date -
Sep 29, 2017
filing date -
Sep 30, 2016
priority date (Note) -
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Abstract
A lifting jack system includes a lifting bar; having a track of teeth running vertical along one edge of the lifting bar; and a foot secured to a base of the lifting bar; a lifting head secured around the lifting bar and vertically moveable along the track of teeth; a nose, extending outward from the lifting head for securing to an item to be raised; a gear system housed within the lifting head, the gear system having a safety gear with asymmetrical teeth; a spring loaded pawl engaged with the teeth of the safety gear; and a round gear with symmetrical teeth engaged with the teeth of the safety gear and the track of teeth of the lifting bar; and a ratchet bar secured by a ratchet to the safety gear and extending outwardly from the lifting head; the ratchet bar is to turn the safety gear via the ratchet, thereby engaging the safety gear with the round gear, the round gear then engaging with the track of teeth to raise the lifting head along the track of teeth; and the spring loaded pawl engages with the safety gear to prevent downward movement of the lifting head.
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