Edward R Martin

US Patent:

55777430, Nov 26, 1996

Filed:

May 10, 1995

Appl. No.:

8/438880

Inventors:

Roger J. Kanaan - Easley SC
Edward H. Martin - Anderson SC

Assignee:

Power Tool Holders, Inc. - Wilmington DE

International Classification:

B23B 3122

US Classification:

279 72

Abstract:

A quick release chuck device includes a body member having an internal bore for receipt of a tool shank. The body member is matable to a drive spindle. A plurality of circumferentially spaced passages are defined in the body member, with each passage defining an opening into the internal bore. Bearing members are disposed in the passages and are radially movable within the passages so that at least a portion of each bearing member extends into the internal bore. An outer sleeve is disposed about the body member and the bearing members. The sleeve is rotatable relative to the body member between a gripping position and a released position. The outer sleeve has an inner diameter surface with ramping engaging surfaces defined therein which are spaced so as to engage the bearing members and force the bearing members radially inward to positively grip a tool shank disposed in the internal bore when the outer sleeve is rotated to its gripping position. The tool shank is released by rotating the outer sleeve to its released position which allows the bearing members to move radially outward.

US Patent:

58201360, Oct 13, 1998

Filed:

Oct 24, 1996

Appl. No.:

8/740101

Inventors:

Erik G. Han - Anderson SC
Edward H. Martin - Anderson SC
Kenneth M. Montjoy - Seneca SC
William M. Aultman - Pickens SC
Robert A. Grogan - Salem SC

Assignee:

Power Tool Holders Incorporated - Wilmington DE

International Classification:

B23B 3114
B23B 3120

US Classification:

279131

Abstract:

A quick release chuck device includes a body member having a frustoconical chamber defined therein with a collet device operably housed in the chamber. At least two longitudinally extending members are disposed equally spaced around the circumference of the body member and are pivotally mounted relative to the body member at pivot points near a front or first end of the longitudinal members. The longitudinal members have a second end opposite the first end wherein the second ends are moveable radially outward from the body member as the body member is rotated in an operational mode of the device. The first ends of the longitudinal members engage the collet device and force the collet device longitudinally into the frustoconical chamber when the second ends are moved radially outward by centrifugal force as the body member is rotated.

US Patent:

55118011, Apr 30, 1996

Filed:

Apr 1, 1994

Appl. No.:

8/221889

Inventors:

Roger J. Kanaan - Easley SC
Edward H. Martin - Anderson SC

Assignee:

Power Tool Holders, Inc. - Wilmington DE

International Classification:

B23B 3120

US Classification:

279 52

Abstract:

An integrated and collet and chuck device includes a body member configured to be non-movably fixed to a drive spindle of a driving tool. An outer sleeve member is disposed about a portion of the body member and is rotatable relative to the body member. The sleeve member comprises a front end defining a collet receiving chamber for carrying a conventional collet. A nut is configured with the sleeve member so as to be rotatable therewith relative to the body member. A screw member is disposed rotatably concentric within the nut. The screw and nut are threadedly engaged so that rotation of the nut drives the screw member in the longitudinal direction. The screw member has a collet engaging surface which presses the collet within the frusto-conical inner diameter surface of the sleeve thereby causing the collet to collapse and grip upon the shank of a tool carried therein.

US Patent:

57554480, May 26, 1998

Filed:

Dec 13, 1996

Appl. No.:

8/764160

Inventors:

Roger J. Kanaan - Easley SC
Erik G. Han - Anderson SC
Edward H. Martin - Anderson SC

Assignee:

Power Tool Holders Incorporated - Wilmington DE

International Classification:

B23B 31107

US Classification:

279 75

Abstract:

A quick-change chuck device has a body member having a recess defined therein for receipt of a circular tool shank. The body member includes a number of tapered slots defined therein in communication with the recess. An outer sleeve member is coaxial about the body member and axially movable relative to the body member. An axial spring mechanism is disposed between the sleeve member and the body member so as to bias the sleeve member longitudinally relative to the body member to a biased position. The sleeve member is axially movable against the biasing force of the spring mechanism to a released position. Tapered pins are seated within each tapered slot. The tapered pins contact a pin engaging surface defined on the inner diameter of the outer sleeve and are forced radially inward within the slots so as to extend into the recess in the biased position of the outer sleeve. The pins are movable radially outward within the slots once the outer sleeve is moved to its released position relative to the body member. The outer sleeve can include a polymer sleeve surrounding a cylindrical insert in which an axially extending slit is disposed through the insert and between adjacent pin engaging surfaces.