Pole jack apparatus
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United States of America Patent
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-
Aug 3, 1999
Grant Date -
N/A
app pub date -
May 6, 1997
filing date -
May 6, 1997
priority date (Note) -
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Abstract
A pole jack apparatus for travelling up and down a pole including a frame member with a jacking mechanism. A pump lever is utilized for causing the jacking mechanism to engage the pole for upward and downward travel. The jacking mechanism includes an interlock device to ensure that one of two engagement pins is engaged with the pole at all times. A separate spring biased, 'dead man' brake is also provided for added safety.
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