Manually operated zero-load rapid lifting hydraulic jack
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United States of America Patent
Stats
-
Sep 23, 2003
Grant Date -
Jan 30, 2003
app pub date -
Jul 26, 2001
filing date -
Jul 25, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A manually operated zero-load rapid lifting hydraulic jack. The jack has a lifting arm and a lever which are connected properly together by contacting one another. A lifting arm is formed with an integral receiver portion, which could be in the form of a receiving hole, a receiving tube, a receiving block or any infinite variety of receiver configurations, such that one end of the lever can be inserted into or locate over those receivers as described above. In zero load, as the lever is being pressed downwards and the lifting arm axle serves as a fulcrum to drive the lifting arm to move upwards rapidly to a position of contacting with a lift point.
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Cited Art Landscape
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