Keyless chuck gripping device

摘要

A keyless chuck gripping device for opening or closing jaws of a chuck of a rotary tool without using a chuck key includes a first portion having a surface extending at least partially around an outer surface of a chuck locking drum. The first portion is attached to a forward housing portion of the rotary tool or the outer surface of the chuck locking drum. A second portion connected to the first portion is urged into frictional or lock engagement with the unattached portion of the rotary tool where manual actuation alters rotational speed of the chuck locking drum relative to the speed of the rotary tool shaft. The second portion maintains the chuck locking drum in a stationary position while the shaft is driven by the motor, enabling the chuck locking drum to turn the chuck jaws in forward or reverse direction.