HOMER R FOSTER
Real Estate Commission in Kittanning, PA
License number
Pennsylvania RS178835L
Category
Real Estate Commission
Type
Real Estate Salesperson-Standard
Address
Address
Kittanning, PA 16201
Professional information
Pulsed Pressure Method For Vacuum Refining Of Glassy Materials
US Patent:
4849004, Jul 18, 1989
Filed:
Oct 31, 1988
Appl. No.:
7/264750
Inventors:
Ronald L. Schwenninger - Ridgeley WV
David A. Hanekamp - Cumberland MD
Homer R. Foster - Kittanning PA
David A. Hanekamp - Cumberland MD
Homer R. Foster - Kittanning PA
Assignee:
PPG Industries, Inc. - Pittsburgh PA
International Classification:
C03B 5225
US Classification:
65134
Abstract:
In a process for refining molten glass or the like by vacuum, the collapse of foam is accelerated by periodically applying a surge of pressure that disrupts foam stability. Preferably, the surge is a short pulse of lower pressure.