Patent US3394275A successfully refreshed from Google Patents.
US3394275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration transducers
Assignee: Federal Electronics Inc
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Filing: 1966-02-09
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Granted: 1968-07-23
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Expires: 1986-02-09
Abstract
No abstract record available.
Inventors
- 👤 Seymour A Lippmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:23
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/16; G08B13/1654
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
MEANS NORMALLY MOUNTED ON A SURFACE FOR SENSING UNDULATORY WAVES PROPAGATED SUBSTANTIALLY ALONG SAID SURFACE AND TENDING TO IMPART AN ALTERNATING ROCKING MOTION TO A SAID MEANS, SAID MEANS COMPRISING: A MEMBER POSSESSED OF A PREDETERMINED MOMENT OF INERTIA; MEANS SUPPORTING SAID MEMBER AWAY FROM SAID SURFACE; AND MEANS ADAPTED TO GENERATE AN ALTERNATING ELECTRICAL SIGNAL WHEN SAID MEMBER IS CAUSED TO ROCK UNDER THE INFLUENCE OF SAID UNDULATORY WAVES PROPAGATED ALONG SAID SURFACE; SAID LAST MENTIONED MEANS BEING FURTHER ADAPTED TO REMAIN INDIFFERENT TO ANY MOTION OF SAID MEMBER OTHER THAN ROCKING MOTION.
References Cited (Backward Citations)
US1866267A
Cited
US1902184A
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US2426322A
Cited
US2443969A
Cited
US2784327A
Cited
US3320582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |