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:
Jul. 20, 1993
Filed:
Jul. 23, 1990
Petrus M Knapen, Tilburg, NL;
Kinetron B.V., Tilburg, NL;
Abstract
A magnetic object having a plurality of pole regions of small dimensions and adapted to be molded in a molding device. The object includes a body of a given shape, for instance a cylindrical block or a cylindrical sleeve having an outer diameter smaller than 5 mm, and including alternating north and south poles. The body is made of a mixture of grains of fully magnetized anisotropic permanent magnet material and a hardening binding agent. The grains are reduced from a permanent magnet until all grains are smaller than the smallest dimension of a pole region and in the pole regions at least those grains having a size of the same range of size as the smallest dimension of a pole region are distributed in accordance with the alternating north and south poles.