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:
Dec. 07, 1976
Filed:
Dec. 08, 1975
Applicant:
Inventors:
Donald E McWilliams, Pittsburgh, PA (US);
William L Schaefer, Gibsonia, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
65 / ; 34164 ; 65 / ; 65-9 ; 65 1 / ; 198609 ; 432235 ;
Abstract
An improved method and apparatus for forming chopped glass fiber strands is disclosed. The improvement comprises a vibratory conveyor under a drying apparatus for said glass fiber strands which is insulated such that cold spots do not develop on the tray adjacent the glass fiber strands. Preferably, the tray is formed of two sections, one inside the other, having an airspace therebetween along their lengths and having a spacer between the lips of the sections.