Mobile hoist system
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United States of America Patent
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-
Jun 5, 2012
Grant Date -
N/A
app pub date -
Jul 1, 2009
filing date -
Feb 7, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mobile hoist system for preventing the application of an overloading input force or an overloading weight force from an elevated load. The mobile hoist system generally includes a frame removably connected to a support structure, a drive assembly connected to the frame and a driven assembly connected to the frame and mechanically connected to the drive assembly via a main elongated member. The drive assembly includes a winch and a brake unit connected to the winch. The brake unit is capable of preventing lowering of a load up to a first torque limit. The driven assembly includes a drum having a strap wound thereon and a slip clutch to brake the drum. The slip clutch prevents slippage up to a second torque limit. The second torque limit is less than the first torque limit to prevent damage to the brake unit by the load having an excessive weight.
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