Hoisting apparatus for a manhole
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United States of America Patent
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Jun 11, 1991
Grant Date -
N/A
app pub date -
Jun 15, 1990
filing date -
Jun 15, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hoisting apparatus for a manhole adapted to be fastened to a guardrail of a manhole. The hoisting apparatus is vertically spaced above and extends across the manhole. The hoisting apparatus has two operating positions enabling it to raise an object out of the manhole, maneuver the object horizontally over a surface area adjacent to the manhole, and lower the object onto the adjacent surface area. Likewise, the hoisting apparatus can be utilized to raise an object off the adjacent surface area, maneuver the object over the manhole, and lower the object into the manhole. Furthermore, the hoisting apparatus is lightweight, portable, and mechanically non-complex.
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