PERSONAL LIFT DEVICE

摘要

A personal lift device is disclosed having a motor having an output shaf t. A gearing system is operatively connected to the output shaft for increasi ng torque. A strap for suspending a weight is wound onto a spool and rotating the spool extends and retracts the strap. A drive connection is made between the gearing system and the spool to permit said motor to drive said spool. A brake is associated with said spool to prevent unwanted extension of said strap from said spool, when a weight is suspended by said strap. In a preferred embodiment a clutch is provided between the brake and the drive train, and the greater the weight supported by the spool the greater t he braking force. An emergency lift and lower device is also provided in the event of a failure of the motor.