Terry R Wolfe

US Patent:

54142407, May 9, 1995

Filed:

Dec 27, 1988

Appl. No.:

7/290225

Inventors:

Thomas M. Carter - Allison Park PA
Charles R. Coleman - Pittsburgh PA
Russell C. Criss - Pittsburgh PA
Frank H. Gillery - Allison Park PA
Pamela L. Martino - New Kensington PA
Amy M. Roginski - New Kensington PA
John A. Winter - Pittsburgh PA
Terry L. Wolfe - Allison Park PA
James J. Finley - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

H05B 300

US Classification:

219203

Abstract:

An electrically heatable windshield with a hidden bus bar configuration. A border of opaque ceramic material, preferably a lead borosilicate enamel, is bonded to an interior surface of the transparency about its periphery. Opposing electroconductive bus bars, preferably a low frit content silver-containing ceramic material, are bonded to the ceramic material so that the entire inner edge of the bus bar overlays a portion of the ceramic material and is spaced from the inner edge of the border, providing an intermediate portion of the border between the bus bars and transparency surface that is not covered by the bus bars. An electro-conductive coating is applied to the transparency to interconnect the bus bars and covers to the inner surface of the transparency, the bus bars and the intermediate portion of the ceramic material border so that electric current flowing between the bus bars must flow through the portion of the coating that covers the intermediate portion of the border.

US Patent:

43819338, May 3, 1983

Filed:

Jan 25, 1982

Appl. No.:

6/345494

Inventors:

Stephen J. Schultz - Pittsburgh PA
Terry L. Wolfe - Evansville IN

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 23033

US Classification:

65106

Abstract:

This invention relates to shaping glass sheets by roll forming to either simple or complex curvatures about a single axis of bending or to compound curvatures comprising components of curvature about mutually perpendicular axes of bending by a controlled, repeatable program of roll forming without causing the glass sheets to stop their forward movement during their shaping. The apparatus used to perform this process has a minimum of moving parts, thus minimizing maintenance problems and reducing downtime for maintenance and repair.

US Patent:

49042947, Feb 27, 1990

Filed:

Dec 22, 1988

Appl. No.:

7/288348

Inventors:

Stephen J. Schultz - Pittsburgh PA
Terry L. Wolfe - Allison Park PA
Richard E. Wilhelm - Galion OH

Assignee:

PPG Industries, INc. - Pittsburgh PA

International Classification:

C03B 2303

US Classification:

65106

Abstract:

A heat softened glass sheet is conveyed directly from a heating furnace onto an advancing conveyor belt which is supported on a scissor table. The glass sheet is advanced on the belt to a position below an upper press face. The scissor table increases the sag of the belt and the corresponding curved configuration of the supported glass sheet as it lifts the glass sheet into pressing engagement with the upper press face. During pressing, the glass sheet and belt generally conform to the shaping surface of the press face.

US Patent:

49541536, Sep 4, 1990

Filed:

Jul 3, 1989

Appl. No.:

7/374910

Inventors:

Charles R. Coleman - Pittsburgh PA
Terry L. Wolfe - Allison Park PA
John A. Winter - Pittsburgh PA
Elizabeth A. Fiano - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03C 300
C03C 1704
C03B 2302

US Classification:

65 6053

Abstract:

Thermal energy from quartz lamp heaters are used to fire ceramic enamel material onto a glass substrate while minimizing any increase in the temperature of the glass.