Permanent magnet device for selectively inverting a magnetic bia

Details Permanent magnet device for selectively inverting a magnetic bia Permanent magnet device for selectively inverting a magnetic bia

1995-04-10

1996-07-09

Dinh, Tan

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, G11B 1100

Patent

active

055351816

ABSTRACT:
An apparatus for selectively inverting an external magnetic field in a magneto-optic recording system so that information can be selectively recorded on or erased from a magneto-optic recording element of the system moving through the field, the apparatus comprises a permanent magnet including a first and second portion positioned adjacent to each other and each portion having north and south poles oriented along their cross-sectional dimension, wherein the north pole of the first portion is abuttingly adjacent to the south pole of the second portion, and the south pole of the first portion is abuttingly adjacent the north pole of the second portion; and a coil for imparting a magnetic field to the permanent magnet for moving the permanent magnet.

REFERENCES:
patent: 4972337 (1990-11-01), Eguchi et al.
patent: 5020042 (1991-05-01), Fearnside et al.
patent: 5291345 (1994-03-01), Umeda et al.

Affiliated with

Also associated with

Rating

Permanent magnet device for selectively inverting a magnetic bia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Permanent magnet device for selectively inverting a magnetic bia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Permanent magnet device for selectively inverting a magnetic bia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1873620