Title: Magnetoelastic, remanent, hysteretic devices

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.

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Inventors: Garshelis, Ivan J. (Clark, NJ, US)

Application Number: 488208
Filing Date: 1974-07-12
Publication_date: 1976-01-13
Assignee:
Primary Class(es): 431/255 335/215, 431/264, 534/764
Other Classes:
US Patent Ref:

3083353

Mar, 1963

Bobeck

340/174.

Other Refs:
Primary Examiner: Favors, Edward G.
Assistant Examiner:
Attorney: Hubbell, Cohen & Stiefel