Patent US3173131A successfully refreshed from Google Patents.
US3173131A
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US
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Magneostrictive apparatus
Assignee: AT&T Inc
•
Filing: 1958-03-19
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Granted: 1965-03-09
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Expires: 1978-03-19
Abstract
No abstract record available.
Inventors
- 👤 James R Perucca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:48
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/005; H; H03; H03H; H03H9/00; H03H9/02; H03H9/125; H03H9/30; H03H9/38
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
A MAGNETOSTRICTIVE DELAY LINE INCLUDING A CONDUCTIVE MAGNETOELASTIC MEMBER AND MEANS FOR GENERATING TORSIONAL IMPULSES THEREIN COMPRISING MEANS FOR APPLYING A LONGITUDINAL BIAS CURRENT TO SAID MEMBER TO ESTABLISH THEREIN A CIRCUMFERENTIAL MAGNETIC FIELD, A SOURCE OF ELECTRICAL SIGNAL PULSES, FLUX SOURCE MEANS CONTROLLED BY SAID SOURCE OF SIGNAL PULSES FOR PRODUCING A LONGITUDINALLY BIFURCATED MAGNETIC FIELD AT A FIRST POINT IN SAID MEMBER DURING EACH OF SAID SIGNAL PULSES, SAID BIFURCATED FIELD HAVING OPPOSITELY-DIRECTED COMPONENTS SUBSTANTIALLY ORTHOGONAL TO SAID CIRCUMFERENTIAL FIELD, AND TORSIONAL IMPULSE DETECTING MEANS POSITIONED AT A SECOND POINT ON SAID MEMBER LONGITUDINALLY DISPLACED FROM SAID FIRST POINT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |