Deactivatable magnetic marker, method of making same and...

Details Deactivatable magnetic marker, method of making same and... Deactivatable magnetic marker, method of making same and...

G - Physics

08

B

26/201, 340/124.

G08B 13/24 (2006.01)

Patent

CA 1297551

Abstract of the Disclosure A magnetic marker comprising a magnetic material having a hysteresis characteristic which is such that upon subjecting the material to an applied alternating magnetic field, the magnetic flux of the material undergoes a regenerative step change in flux at a threshold value when the field increases to the threshold value from substantially zero and undergoes a gradual change in flux when the field decreases from the threshold value to substantially zero. For increasing values of applied field below the threshold, there is substantially no change in the magnetic flux of the material. The aforesaid hysteresis characteristic of the marker is achieved by causing the material to have domains with a pinned wall configuration. Deactivation of the marker is realized by disabling the pinned walls from returning to their pinned condition via application of a deactivation field of high frequency and/or amplitude.

581955

Affiliated with

Also associated with

Rating

Deactivatable magnetic marker, method of making same and... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Deactivatable magnetic marker, method of making same and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deactivatable magnetic marker, method of making same and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1264137