Stephen Shane Gibson

US Patent:

57882487, Aug 4, 1998

Filed:

Oct 24, 1996

Appl. No.:

8/735656

Inventors:

Stephen E. Gibson - Salem SC

Assignee:

Power Tool Holders Incorprated - Wilmington DE

International Classification:

B23B 3120

US Classification:

279 51

Abstract:

A quick release chuck device includes a body member and a device for attaching the body member to a drive spindle. A chamber in the body member receives a conventional collet. Thread grooves are defined on the outer circumferential surface of the body member. An operating sleeve is rotatably mounted on the body member and includes thread grooves defined on the inner circumferential surface. Rolling bodies are received in the thread grooves of the body member and sleeve member wherein the sleeve member is axially movable relative to the body member upon rotation of the sleeve member through engagement of the rolling bodies in the thread grooves. The sleeve member imparts a force to the collet in the chamber causing the collet to grip upon a tool shank carried therein.

US Patent:

58996486, May 4, 1999

Filed:

Nov 17, 1997

Appl. No.:

8/971757

Inventors:

Roger J. Kanaan - Easley SC
Kenneth M. Montjoy - Seneca SC
Erik G. Han - Anderson SC
Stephen E. Gibson - Salem SC

Assignee:

Power Tool Holders Incorporated - Wilmington DE

International Classification:

F16B 3708

US Classification:

411432

Abstract:

This invention has as its purpose the provision of a clamp screw in which the loss of clamping force is greatly reduced, a powerful clamping force can be obtained with a small rotational input, a sufficient clamping force can be obtained by a manual operation, and moreover, a sufficient clamping force can be obtained without excessive clamping by making effective use of the reverse thrust of the rotating tool. With the clamp screw of the invention, when the flange ring is in contact with the object to be attached, the rotation of the threaded member stops and a clamping state is entered, the rotation of the operating ring is screw fed by the balls moving around the thread grooves, and as a result of this movement of the operating ring due to the screw feed, pressure is exerted on the flange ring through the restraining ring thus clamping the tool to be attached.