Metal treatment – Process of modifying or maintaining internal physical... – Magnetic materials
Patent
1990-01-22
1993-01-26
Sheehan, John P.
Metal treatment
Process of modifying or maintaining internal physical...
Magnetic materials
148104, 264 24, 252 6253, 252 6254, H01F 102
Patent
active
051819716
ABSTRACT:
This specification discloses a method of manufacturing a magnet roller having the step of disposing a plurality of pairs of magnetic poles each comprising the starting magnetic pole and terminal magnetic pole of a magnetic line of force on the peripheral surface of a cavity in a metal mold in which a resin magnet is molded and oriented so that straight lines passing through the starting magnetic poles and terminal magnetic poles of the pairs of magnetic poles are substantially on the same plane and extend through the cavity substantially in parallelism to one another, molding and orienting a resin magnet material poured into the cavity while applying a plurality of magnetic lines of force for orientation into the cavity in the same direction, thereby obtaining a molded article having at least four magnetic peaks, and the steps of inverting part of the magnetic properties of the magnetic peaks of the molded article so that the magnetic properties of the adjacent magnetic peaks differ from each other.
REFERENCES:
patent: 2188091 (1940-01-01), Baermann
patent: 4441875 (1984-04-01), Saito et al.
patent: 4954800 (1990-09-01), Ohtsuha
Canon Kabushiki Kaisha
Sheehan John P.
LandOfFree
Magnet and method of manufacturing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnet and method of manufacturing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnet and method of manufacturing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1410775