Magnetoelastic, remanent, hysteretic devices
OwnerIvan J. Garshelisinventor
Life of this patent
Estimating the term…
Abstract
Devices relying on the Inverse Wiedemann Effect. In all instances, magnetostrictive rods are circularly magnetized and exhibit hysteresis when plotting axial induction vs. twist. Hysteresis, especially when rectangular, yields high d.phi./dt upon twisting to result in large output voltage across terminals of coil wound about the rod. In other embodiments, rectangular hysteresis gives rise to one-shot electric push button or sequential switch. Hysteretic magnetostrictive circularly magnetized rods also serve as recording devices to detect mechanical movement or shock.
Claims14
An electromechanical element, comprising:
- a circularly magnetized, magnetostrictive rod that exhibits hysteresis in its magnetic induction vs. twist strain curve.
A voltage producing device, comprising:
- a circularly magnetized, magnetostrictive rod that exhibits hysteresis in its magnetic induction vs. twist strain curve;
- a conductive coil wound on said rod, said coil having a pair of output terminals;
- and
- means for twisting said rod, whereby to produce a voltage between said output terminals.
A voltage producing device comprising:
- a circularly magnetized magnetostrictive rod that exhibits a magnetic induction vs. twist strain curve that starts at coordinates zero-zero and then shows magnetic induction as said rod is twisted and shows a drop in said induction to about zero as more twist is put into said rod;
- a conductive coil wound on said rod, said coil having a pair of output terminals;
- and
- means for twisting said rod.
Dependencies are inferred from the claim text.