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:
May. 10, 1983
Filed:
Dec. 21, 1981
William F Porter, Lake Zurich, IL (US);
Shirley J Schwab, Tacoma, WA (US);
Karl E Schneider, Auburn, WA (US);
United States Gypsum Company, Chicago, IL (US);
Abstract
An apparatus for the production of mineral fiber or wool felts, blankets or batts having uniform thickness and density, comprising means for fiberizing the mineral composition, a housing defining a chamber into which the fibers are introduced, a foraminous belt upon which the fibers are deposited, a rotating brush for sweeping or throwing back excess fibers, thereby leaving a uniform layer of uncompressed fibers on the felt, and a roller for compressing the layer of fibers into a felt. The rotary brush removes the excess fibers and cooperates to provide a felt which is of uniform density and thickness.