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:
Nov. 02, 1993
Filed:
Oct. 28, 1991
Elmer C Allwine, Jr, Santa Clara, CA (US);
Other;
Abstract
The composite magnet of the present invention comprises two pieces of permanent magnet material formed into a complementary pattern of holes and projections. The two pieces are magnetized in opposite axial directions. The two pieces, magnetized in this manner, when placed together form an interlocking single element which exhibits a magnetic pattern of north-south poles which matches the pattern of holes and projections. In this manner, the composite magnet appears as a single permanent magnet, exhibiting a sharp, strong, and well-defined magnetic pattern. In accordance with the present invention, the composite magnet may be used in many applications including, but not limited to encoders, one of which is described in detail.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile