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. 24, 2002
Filed:
Dec. 20, 2000
Walter A. Johnson, Aurora, CO (US);
Doug Ferreira, Artois, CA (US);
Gerard J. DeMott, Evergreen, CO (US);
Yifang Cal, Littleton, CO (US);
Johns Manville International, Inc., Denver, CO (US);
Abstract
A spinner disc for a rotary fiberization process, includes a base plate and an annular peripheral sidewall extending upward from the base plate which has a plurality of rows of fiberizing holes therein for fiberizing molten thermoplastic fiberizable materials by centrifugal force. The base plate has: a central bore therein on a rotational axis of the spinner disc for mounting the spinner disc on a drive shaft; an outer annular portion for receiving molten thermoplastic fiberizable materials to be fiberized; and an inner annular portion intermediate the central bore and, the outer annular base plate portion. A plurality of slits in the inner annular portion of the base plate, passing completely through the base plate from an upper surface of the base plate to a lower surface of the base plate and radiating outward from a periphery of the central bore, relieve stresses in the base plate, especially during a start-up of a fiberizing process, and permit hot gases to pass out from within the spinner disc during a fiberizing operation to heat the underside of the spinner disc.