Power Tool Holders, Inc.

Dennis D Claramunt

Stephen Elliott Gibson

Roger J Kanaan

Ian Middleton

A clamping mechanism is configured for receipt on a threaded drive spindle to hold a working tool relative to the drive spindle. The mechanism includes a flange surface disposed to abut against a working tool in an operational mode of the device, and a rotatable member configured with the flange surface and disposed to advance the flange surface upon manual rotation thereof. The rotatable member includes at least one manual tightening device or mechanism for effectively increasing the manual tightening torque.

Hand actuable clamping device with circumferentially extending

A chuck for use with a manual or powered driver having a rotatable drive shaft is provided. The chuck includes a plurality of jaws slidably positioned in angularly disposed passageways in a body member. Each of the jaws has a jaw face formed on one side and threads formed on the other. A nut includes axially aligned threaded sections. Each of the sections is rotatably mounted on the body in engagement with the jaw threads. A generally cylindrical front sleeve member is in driving engagement with the nut whereby the jaws will be moved by the nut when the front sleeve member is rotated with respect to the body. The first section and the second section are rotated with respect to each other when the jaws are in a gripping engagement with a tool shaft.

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Anderson, SC, United States of America

Dennis D Claramunt