Jack with Double High-pressure Structure
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United States of America
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Issued Date -
Mar 31, 2022
app pub date -
Sep 7, 2021
filing date -
Sep 7, 2021
priority date (Note) -
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Abstract
A jack with a double high-pressure structure is provided, including a base, a pump body installed on the base, an oil cylinder, an oil drain valve, and a safety valve. The base is provided with a low-pressure check valve and a high-pressure check valve A. It is characterized in that a high-pressure check valve B is also installed on the base. The present invention can improve the safety performance during use and prolong the service life.
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