Simplified hydraulic circuit for a quick-rise hydraulic lifting jack
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United States of America
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Oct 9, 2001
Issued Date -
N/A
app pub date -
Nov 1, 1999
filing date -
Nov 1, 1999
priority date (Note) -
Withdrawn
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Abstract
A hydraulic fluid circuit for a quick rise type lifting jack positions multiple valves that control two stages of the lifting operation of the jack in the same valve housing machined into a base of the jack and thereby reduces the costs involved in manufacturing and assembling the hydraulic circuit of the jack.
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