Jack
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United States of America Patent
Stats
-
Apr 18, 1989
Issued Date -
N/A
app pub date -
Sep 17, 1986
filing date -
Feb 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A jack as provided for use with a lifting device having two parallel support platforms. The jack has base and top elements, and a scissor mechanism between them. Two air piston and cylinder assemblies are disposed vertically and actuate the scissor mechanism. The jack is mounted for free movement along the length of a lifting device. The piston and cylinder assemblies can be connected to mid points of the arms of the scissor mechanism on either side of it. This provides a compact assembly with the piston and cylinder assemblies working at an optimum angle. The base element of the jack includes openings for the piston and cylinder assemblies.
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