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:
Jun. 02, 1998
Filed:
Aug. 01, 1997
The B.F. Goodrich Company, Richfield, OH (US);
Abstract
A rotary needling process including a multitude of felting needles repeatedly driven into a fibrous structure disposed on a surface of a needle penetrable support as the support is rotated about an axis of rotation. The process according to the invention comprises the steps of removably fixing a needle penetrable sheet to a rotary needling support, the rotary needling support defining a face disposed beneath a multitude of felting needles and having a needle penetrable area, the needle penetrable sheet covering the face and being fixed to the rotary needling support outside the face; rotating the needle penetrable sheet about an axis of rotation; depositing at least a first fibrous layer on the needle penetrable sheet; cohering the first fibrous layer and the needle penetrable sheet by repeatedly driving the multitude of felting needles into the first fibrous layer and the needle penetrable sheet; and, removing the first fibrous layer and the needle penetrable sheet from the rotary needling support subsequent to the first fibrous layer and the needle penetrable sheet being cohered. According to a further aspect of the invention, a rotary needling support for use in the process is also provided.