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. 08, 1998
Filed:
Jun. 23, 1997
Leo M Radkowski, Evergreen, CO (US);
Roy V Pogue, Littleton, CO (US);
Larry E Baumgartner, Morrison, CO (US);
Johns Manville International, Inc., Denver, CO (US);
Abstract
In an apparatus for forming a fibrous mat, fibers and binder are collected on a moving continuous, foraminous collection chain conveyor to form the fibrous mat as the collection chain conveyor travels through a collection chamber. After the fibrous mat is formed on the collection chain conveyor, the fibrous mat is removed from the collection chain conveyor for further processing leaving a residue of fibers and binder on and in openings of the collection chain conveyor. Prior to again traveling through the collection chamber, the collection chain conveyor is cryogenically cleaned by applying a cryogenic liquid (e.g. nitrogen) to the collection chain conveyor to freeze the residue of fibers and binder and by mechanically removing the frozen residue of fibers and binder from the collection chain conveyor, e.g. by agitating, beating and/or brushing the collection chain conveyor.