Stephen C Hatkevich

US Patent:

8015849, Sep 13, 2011

Filed:

Oct 7, 2008

Appl. No.:

12/301308

Inventors:

Allen M. Jones - Sidney OH, US
Dale E. Whetstone - Saint Marys OH, US
Larry A. Wilkerson - Wapakoneta OH, US
Stephen C. Hatkevich - Maumee OH, US

Assignee:

American Trim, LLC - Lima OH

International Classification:

B21D 26/14
B21D 26/06

US Classification:

72 56, 72 54, 72 60, 72707

Abstract:

Electromagnetic forming can lead to better formability along with additional benefits. The spatial distribution of forming pressure in electromagnetic forming can be controlled by the configuration of the actuator. A type of actuator is discussed which gives a uniform pressure distribution in forming. It also provides a mechanically robust design and has a high efficiency for flat sheet forming.

US Patent:

6541296, Apr 1, 2003

Filed:

Nov 14, 2001

Appl. No.:

09/993880

Inventors:

Louis R. Sherman - Botkins OH
Allan G. Bruns - St. Henry OH
Robert N. Card - Sidney OH
Frank J. Catanzarite - Sidney OH
Stephen C. Hatkevich - Maumee OH
Debra L. Mayberry - Botkins OH
Treva C. Monnier - Tipp City OH
Roger S. J. Naguit - Kettering OH
Michael E. Purdy - Troy OH
Jeffery D. Sanford - Sidney OH

Assignee:

American Trim, LLC - Lima OH

International Classification:

H01L 2100

US Classification:

438 30, 313110, 313510, 313506, 313507, 313509, 313117, 438 31, 438 22, 438 29

Abstract:

The present invention provides a method of forming an electroluminescent circuit by screen printing. The method according to the invention includes screen printing a rear electrode pattern on a substrate, which is preferably a polyester sheet, screen printing a dielectric layer over the rear electrode pattern, screen printing a front electrode pattern on the dielectric layer, and screen printing a phosphor layer over the front electrode layer. The rear electrode pattern preferably includes a solid layer disposed upon the substrate and the front electrode pattern preferably includes a plurality of opaque lines separated by spaces. In an alternative embodiment, the method according to the invention includes screen printing the phosphor layer on the substrate, screen printing the front electrode pattern on the phosphor layer, screen printing the dielectric layer over the front electrode pattern, and screen printing the rear electrode pattern over the dielectric layer.