Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Qingsheng Yue0
Date of Patent
April 9, 2024
0Patent Application Number
182200660
Date Filed
July 10, 2023
0Patent Citations
Patent Primary Examiner
CPC Code
Patent abstract
A hydraulic jack for providing safety security is disclosed. The hydraulic jack comprises a hydraulic cylinder storing hydraulic fluid inside, and a piston installed in the hydraulic cylinder that is raised up from the hydraulic cylinder by a pressure of the hydraulic fluid stored in the hydraulic cylinder, thereby a heavyweight can be lifted by the piston. The piston has a drill hole on a body thereof that has a determined diameter and is perpendicular to the piston. When the piston is raised up, a safety pin is penetrable through the drill hole to secure the piston in place.
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