Keyless chuck gripping device

A structure for enabling a chuck of a reversible power tool driven by a rotary drive shaft to be opened and closed so that implements adapted to be held by the chuck can be secured to and removed from the chuck by manually holding the chuck without using a key, the drive shaft extending through a wall of a housing of the power tool, the housing including a motor for the drive shaft, the chuck including a locking drum and jaws for holding the implement in place, the jaws being drivingly coupled to the shaft and coupled to the locking drum so the locking drum can be turned in first and second directions relative to the jaws to cause the jaws to open and close to enable insertion and removal of implements in the jaws, the structure comprising an anchor sleeve having an inner diameter, hand gripping projection means fixedly mounted on and about the periphery of he sleeve and extend radially away from the sleeve for enabling safe and comfortable hand gripping thereof to hold the drum in place relative to the housing when the jaws are driven by the shaft so that the jaws open and close when the shaft is respectively driven in first and second opposite directions while sufficient compressional force is applied by a hand of an operator through the projection means and sleeve to the drum, the projection means being made of an elastomeric material, the sleeve having an inner diameter dimensioned such that the sleeve fits over the locking drum and is elastically expanded over and frictionally urged against an exterior surface of the drum, the sleeve include a radially extending flange fixedly mounted on and about the periphery of the sleeve so that it is axially displaced from the projection means, the flange having a surface adapted to be pushed by the hand so the surface frictionally bears against the housing wall to assist the structure in resisting rotation of the drum when the shaft turns the jaws.

A structure for enabling a chuck of a reversible power tool driven by a rotary drive shaft to be opened and closed so that implements adapted to be held by the chuck can be secured to and removed from the chuck by manually holding the chuck without using a key, the drive shaft extending through a wall of a housing of the power tool, the housing including a motor for the drive shaft, the chuck including a locking drum and jaws for holding the implement in place, the jaws being drivingly coupled to the shaft and coupled to the locking drum so the locking drum can be turned in first and second directions relative to the jaws to cause the jaws to open and close to enable insertion and removal of implements in the jaws, the structure comprising an anchor sleeve having an inner diameter, a multiplicity of hand gripping projections fixedly mounted on the sleeve so that they are circumferentially spaced from each other about the periphery of the sleeve and extend radially away from the sleeve for enabling safe and comfortable hand gripping thereof to hold the drum in place relative to the housing when the jaws are driven by the shaft so that the jaws open and close when the shaft is respectively driven in first and second opposite directions while sufficient compressional force is applied by a hand of an operator through the projections and sleeve to the drum, the projections being made of an elastomeric material, the sleeve having an inner diameter dimensioned such that the sleeve fits over the locking drum and is elastically expanded over and frictionally urged against an exterior surface of the drum.