Paul K Jordan

US Patent:

49898876, Feb 5, 1991

Filed:

Jun 15, 1990

Appl. No.:

7/538909

Inventors:

Paul T. Jordan - Seneca SC

Assignee:

Jacobs Chuck Technology Corporation - Wilmington DE

International Classification:

B23B 3102

US Classification:

279 48

Abstract:

The center of a collet having a plurality of individual gripper members resiliently spaced apart in an annular array and operated on by a frustoconical surface can be adjusted by displacing some of the gripper members more than others of said gripper members parallel to the axis with which both the annular array and the frustoconical surface are nominally concentric. This causes the frustoconical surface to produce greater radial displacement of some of the gripper members, thereby shifting the center of the collet transverse to the above-mentioned axis.

US Patent:

50111671, Apr 30, 1991

Filed:

Mar 12, 1990

Appl. No.:

7/491729

Inventors:

Paul T. Jordan - Seneca SC

Assignee:

Jacobs Chuck Technology Corporation - Wilmington DE

International Classification:

B23B 3112

US Classification:

279 62

Abstract:

The profiles of the threads on the jaws of a chuck, such as a three-jawed chuck, are modified so that at least one end of the jaw thread segments curve in away from the threads on the nut which operate the jaws. This prevents the end edges of the jaw thread segments from digging into the nut threads when the nut is rotated to operate the jaws.