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:
Sep. 14, 1993
Filed:
Apr. 04, 1991
Eric J Brosch, Grand Rapids, OH (US);
Randy A Limmer, Whitehouse, OH (US);
William M Lafayette, Toledo, OH (US);
Manville Corporation, Denver, CO (US);
Abstract
The apparatus includes a bushing, a cooling assembly, a sizing applicator, a glass filament gathering pad and a winder. A tip section of the bushing is provided with rows of tips having orifices from which streams of molten glass are attenuated into filaments. The tip section is recessed within an insulated frame that supports the bushing so that the insulated frame reflects heat back to the outer tip rows. The glass filaments are drawn from the bushing tips by the winder with the gathering pad functioning to gather the filaments together into a strand which is wound on the winder. Finned cooling tubes or a combination of finned cooling tubes and finless cooling tubes are located beneath the bushing in proximity to and between at least some of the rows of tips to maintain a more uniform temperature among the glass globules issuing from the tips in the various rows. The cooling tubes and fins are fabricated of an alloy having a major portion of palladium and a minor portion of ruthenium.