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:
Dec. 29, 1987
Filed:
Apr. 29, 1986
Masatoshi Takeuchi, Tokushima, JP;
Takayasu Hamagaki, Tokushima, JP;
Seiken Co., Ltd., Tokushima, JP;
Abstract
A nonwoven fiber abrasive disk is formed with a hole in the center, from flexible fibers randomly oriented in all three dimensions. The abrasive disk has compressed regions that radiate out from the center to the perimeter, with uncompressed abrasive regions located between them. The fibers in the compressed regions are densely pressed together and hardened with bonding adhesive introduced into the gaps between those fibers, such that the disk thickness in those regions is less than that in the uncompressed abrasive regions. The abrasive regions of the disk, which are thicker than the compressed regions, protrude out to form the abrasive surface.