Gerald A Kunkle

US Patent:

47389389, Apr 19, 1988

Filed:

Aug 7, 1986

Appl. No.:

6/894143

Inventors:

Gerald E. Kunkle - New Kensington PA
Wright M. Welton - Paw Paw WV
Ronald L. Schwenninger - Ridgeley WV

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 5225
C03C 304

US Classification:

501 72

Abstract:

Method and apparatus are provided for refining glassy material or the like by vacuum. The material is first melted and then introduced into a vacuum chamber, preferably into space above liquid held in the chamber. Other aspects involve a two-step melting process preparatory to the vacuum refining, in which the material is initially liquefied in one stage and dissolution of particles is substantially completed in a second stage. The molten material is preferably foamed immediately upon entry into the vacuum chamber.

US Patent:

46326871, Dec 30, 1986

Filed:

Jun 25, 1985

Appl. No.:

6/748639

Inventors:

Gerald E. Kunkle - New Kensington PA
Henry M. Demarest - Natrona Heights PA
Larry J. Shelestak - Bairdford PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 510

US Classification:

65 27

Abstract:

Thermally fusible material such as glass batch is liquefied using a solid carbonaceous fuel such as coal as the major energy source. In another embodiment, solid or liquid fuel is mixed with the batch material being fed to an initial liquefaction stage. Melting may be advanced further in a subsequent stage where the melt may also be re-oxidized.

US Patent:

46540687, Mar 31, 1987

Filed:

Jan 13, 1986

Appl. No.:

6/818412

Inventors:

Gerald E. Kunkle - New Kensington PA
Joseph M. Matesa - Plum Boro PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 300

US Classification:

65135

Abstract:

Converting thermally meltable materials to a liquefied state is carried out on a lining of pulverulent material. As liquefied material is drained from the surface, additional unmelted material is fed onto the surface to maintain the lining substantially intact.

US Patent:

47893907, Dec 6, 1988

Filed:

Jul 1, 1987

Appl. No.:

7/068375

Inventors:

Gerald E. Kunkle - New Kensington PA
George A. Pecoraro - Lower Burrell PA
Henry M. Demarest - Natrona Heights PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 510

US Classification:

65 27

Abstract:

A lid of a glass batch melting vessel is subjected to corrosive and thermal degradation. The lid is cooled and the temperature of the exploded inner surface of the lid is controlled such that particulate and molten materials entrained in exhaust gas circulating within the vessel adhere to the lid surface forming a protective, insulating coating that prolongs the service life of the lid.

US Patent:

47494000, Jun 7, 1988

Filed:

Dec 12, 1986

Appl. No.:

6/941241

Inventors:

Raymond J. Mouly - Pittsburgh PA
Gerald E. Kunkle - New Kensington PA
Dewitt W. Lampman - Hampton Township, Allegheny County PA
Jack A. Bricker - Tarentum PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 2102

US Classification:

65 97

Abstract:

Glass shapes and sheets are cut directly from a heated glass ribbon while maintaining the optical quality of the cut glass. A float glass ribbon is removed from a glass forming chamber and prior to annealing, a line of cut is heated to its softening temperature. A blade arrangement thereafter penetrates the glass along the heated line of cut to sever the glass. During the line heating and cutting operation, the overall glass temperature is maintained above the strain point of the glass.

US Patent:

43819346, May 3, 1983

Filed:

Jul 30, 1981

Appl. No.:

6/288581

Inventors:

Gerald E. Kunkle - New Kensington PA
Joseph M. Matesa - Holiday Park PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 510

US Classification:

65135

Abstract:

The initial step of melting glass, converting particulate batch materials to a partially melted, liquefied state, is carried out on a support surface of batch. As liquefied batch is drained from the surface, additional batch is fed onto the surface to maintain the surface substantially constant.

US Patent:

39321657, Jan 13, 1976

Filed:

Oct 15, 1974

Appl. No.:

5/514990

Inventors:

Charles K. Edge - Sarver PA
Gerald E. Kunkle - New Kensington PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 1802

US Classification:

65 65A

Abstract:

A layer of molten glass is discharged from a pool of molten glass in a glassmaking furnace and delivered along a substantially horizontal path onto a pool of molten metal in a forming chamber; the glass is then advanced along the surface of the pool of molten metal while being cooled to form a continuous sheet of glass. Prior to discharge and delivery, the molten glass is conditioned to establish an accelerated flow of molten glass in the direction of its delivery. The glass is conditioned by selectively cooling the glass at different depths in the pool of molten glass across the width of the delivery path just prior to delivery to preferentially decelerate the flow of hotter, less viscous glass at one location in the pool of molten glass relative to the flow of cooler, more viscous glass at another location in the pool. In this way the molten glass is caused to uniformly flow into a region for discharge from the pool and delivery for forming.

US Patent:

47417498, May 3, 1988

Filed:

Jan 2, 1987

Appl. No.:

7/000224

Inventors:

John E. Sensi - Arnold PA
Gerald E. Kunkle - New Kensington PA

Assignee:

PPG Industries, Inc. - Pittsburgh PA

International Classification:

C03B 1816

US Classification:

65 992

Abstract:

Delivery of molten glass to a flat glass forming operation carried out as a substantially free-falling vertical stream. The glass may be received in a first chamber in a relatively deep and narrow reservoir, from which it flows to a wider chamber, from which, in turn, it is drawn longitudinally.