Robert A Pritchard

US Patent:

6731043, May 4, 2004

Filed:

Oct 22, 2001

Appl. No.:

10/037546

Inventors:

Robert D. Pritchard - Westlake OH
Michael Hamulak - Amherst OH
Randy Monahan - Lakewood OH

Assignee:

A. J. Rose Manufacturing Co. - Avon OH

International Classification:

H02K 100

US Classification:

310265, 310216, 335261, 335279, 335281

Abstract:

A spin-roll formed one-piece field core shell formed from a blank disc of sheet metal. The one-piece field core has an outer annular ring integral to and encircling a center axis of the disc and extending from a bottom external surface in a direction that is perpendicular to the bottom surface of the disc and parallel to the center axis of the disc. The core has an inner annular ring integral to and encircling a center axis of the disc, the inner annular axis is spaced radially inward from the outer annular ring and extends from the bottom external surface in a direction that is perpendicular to the bottom surface of the disc and parallel to the center axis of the disc. The one-piece field core also contains a mounting flange that encircles a center axis of the disc and extends in a perpendicular direction to a top external surface of the disc and parallel to the center axis of the disc. The mounting flange includes a bore that extends from the top of the mounting flange to the bottom external surface of the disc.

US Patent:

60953071, Aug 1, 2000

Filed:

Mar 4, 1999

Appl. No.:

9/262476

Inventors:

Michael A. Hamulak - Brooklyn OH
Randy Monahan - Strongsville OH
Christopher P. Rose - Brecksville OH
Robert D. Pritchard - Westlake OH

Assignee:

A. J. Rose Manufacturing Co. - Avon OH

International Classification:

B30B 126
B30B 1514

US Classification:

192129B

Abstract:

A tool support and monitoring assembly for a press. The tool includes upper and lower die shoes, back-up plates, and upper and lower die tooling. The die tooling is secured to the back-up plate and includes a first surface facing the back-up plate and an opposite second surface. The back-up plate defines an air plenum which is connected to a pressure monitoring device. The die tooling defines a plurality of small bores which communicate with the air plenum. The bores extend from the first surface toward the second surface of the die tooling. The pressure monitoring device detects air pressure in the air plenum and bores, and shuts down the press to prevent a subsequent stroke when a pressure drop indicative of tool failure is detected.