Stephen O Schultz

US Patent:

44027230, Sep 6, 1983

Filed:

Jan 28, 1982

Appl. No.:

6/343655

Inventors:

Stephen J. Schultz - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 2704

US Classification:

65114

Abstract:

Nozzles are arranged in different densities transverse to a path of travel for glass sheets moving through a pass-through quench to facilitate removal of spent tempering medium to both lateral sides of said path of travel.

US Patent:

43766439, Mar 15, 1983

Filed:

Sep 28, 1981

Appl. No.:

6/306027

Inventors:

Lisa M. Kahle - Altoona PA
Stephen J. Schultz - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 2704

US Classification:

65351

Abstract:

A conveyor roll for conveying glass sheets and a conveyor comprising a plurality of said conveyor rolls is described. Each conveyor roll comprises a curved shaft conforming to the shape of said glass sheets transverse to their path of movement. A plurality of segments of essentially cylindrical configuration is mounted around said curved shaft. The segments have loosely interfitting tongues and grooves and a cylindrically shaped surface of a material that does not mar glass. When torque is applied to one of the end segments of said conveyor rolls, the glass engaging surfaces rotate in unison to convey the curved glass sheets through a treatment station included in glass sheet treating apparatus. A spring mounted about the shaft in position to apply axial pressure against the outer axial surface of the end segment to insure positive tongue in groove engagement would tend to mar said outer axial surface and to cause the end segment to drag in the absence of the present invention. The drag on different segmented rolls is uncontrolled and may easily lead to roll marking of the major surface of the glass sheets transported by the rotating segmented rolls, particularly when different end segments are dragged to different degrees.

US Patent:

46203095, Oct 28, 1986

Filed:

Mar 29, 1985

Appl. No.:

6/717939

Inventors:

Stephen J. Schultz - Pittsburgh PA
John F. Huebner - Pittsburgh PA
Duane E. Wiedor - Pittsburgh PA
Dennis S. Pribish - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

F27D 1102

US Classification:

373128

Abstract:

A furnace with the end portions of a heater supporting anchor rod embedded in the rigid sidewall insulation of the furnace. The anchor rods do not deflect under the weight of the heaters and the entire weight of the anchor rods and heaters is supported by the sidewall insulation.

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:

47116552, Dec 8, 1987

Filed:

Jun 9, 1986

Appl. No.:

6/871937

Inventors:

Stephen J. Schultz - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 2704

US Classification:

65351

Abstract:

An adjustable quench for tempering hot glass sheets of varying transverse configurations, having overlapping members that seal a flexible nozzle assembly as it changes configurations. Nozzles extend from the flexible nozzle assembly towards the shaped glass sheet to be cooled such that the quenching surface formed by the head portions of the nozzles generally parallel the major surfaces of the shaped glass sheet. Each individual flexible nozzle assembly is connected to a common drive that can simultaneously flex all the nozzle assemblies.

US Patent:

43280218, May 4, 1982

Filed:

Nov 28, 1980

Appl. No.:

6/211168

Inventors:

George O. Wehner - Bethel Park PA
Stephen J. Schultz - Pittsburgh PA
Ronald R. Zito - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 1816

US Classification:

65 27

Abstract:

In a flat glass melting and forming installation, the threshold between a melting furnace and a forming chamber is supported on movable cart means to expedite installation and removal of the threshold.

US Patent:

47739258, Sep 27, 1988

Filed:

Jun 15, 1987

Appl. No.:

7/061950

Inventors:

Stephen J. Schultz - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 25033

US Classification:

65106

Abstract:

An adjustable roll forming arrangement for shaping heat softened glass sheets. Each end of a series of transversely curved, longitudinally spaced forming rolls are mounted on first and second longitudinally extending flexible members. The members may be adjusted so that each roll end is positioned along a desired longitudinal radius of curvature that can be modified by flexing the flexible member.

US Patent:

43326072, Jun 1, 1982

Filed:

Nov 28, 1980

Appl. No.:

6/211166

Inventors:

Stephen J. Schultz - Pittsburgh PA
Ronald R. Zito - Pittsburgh PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 1816

US Classification:

651825

Abstract:

A tweel flow control device at the entrance to a flat glass forming chamber is provided with overhead support and elevator means, preferably adapted to convey the tweel from its operative location.