The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1989
Filed:
Dec. 14, 1987
Applicant:
Inventor:
Ronald L Schwenninger, Ridgeley, WV (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65325 ; 65225 ; 65326 ; 65356 ; 6537412 ;
Abstract
Improvements in devices for metering the flow of molten material such as glass include a catenary support structure, internal passageways in the bulbous valve body for directing molten material to the downstream side of the support arm or arms, and electrical isolation of the valve components from each other to recude electrolytic corrosion. An advantage of the invention is that use of precious metals such as platinum is avoided.