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. 27, 1994
Filed:
May. 27, 1992
Fumio Murakami, Saitama, JP;
Eiichi Morita, Saitama, JP;
Tokuji Iwasaki, Chiba, JP;
Yasushi Suzuki, Tokyo, JP;
Kouha Fujimoto, Osaka, JP;
Nippon Felt Co., Ltd., , JP;
Abstract
A magnetic marker comprising a plurality of magnetized fibers oriented substantially parallel to each other is attached to a fringe of ground fabric for production of felt in the form of an endless belt for detecting the travel of the ground fabric and changing various production parameters according to the number of turns which the ground fabric makes around a series of rolls for causing the movement of the ground fabric. Since the magnetic marker consists of extremely thin magnetized fibers, it can withstand the repeated piercing by needles which is required for the production of felt for the purpose of entangling the fibers of fiber web with the ground fabric.