Patent US3252333A successfully refreshed from Google Patents.
US3252333A
Expired / Lapsed
US
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Accelerometers
Assignee: Massachusetts Institute of Technology
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Filing: 1961-04-10
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Granted: 1966-05-24
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Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Barbara K Lunde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:37
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/125; B; B64; B64G; B64G1/00; B64G1/22; B64G1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A SOURCE OF MAGNETIC FIELD, A PAIR OF ELECTRICAL CONDUCTORS HAVING A SUBSTANTIALLY PARALLEL PORTIONS WITHIN SAID FIELD AND LYING IN A PLANE SUBSTANTIALLY PERPENDICULAR TO SAID FIELD, A LIQUID METAL DROPLET JOINING SAID CONDUCTORS AND FREE TO MOVE THERE ALONG, AN ELECTRODE EXTENDING IN PROXIMITY TO SAID DROPLET SO THAT THE CAPACITANCE BETWEEN SAID DROPLET AND SAID ELECTRODE VARIES AS SAID DROPLET MOVES ALONG SAID PARALLEL CONDUCTORS, A DISPLACEMENT SIGNAL GENERATOR WHICH DETECTS CHANGES IN CAPACITANCE BETWEEN SAID ELECTRODE AND SAID DROPLET, AND CURRENT GENERATOR MEANS CONNECTED TO SAID DISPLACEMENT SIGNAL GENERATOR AND RESPONSE TO THE OUTPUT OF SAID DISPLACEMENT SIGNAL GENERATOR AND SAID MEANS FURTHER COUPLED TO SAID PARALLEL CONDUCTORS THIS COUPLING BEING SUCH THAT THE FORCE PRODUCED BY THE FLOW OF CURRENT FROM SAID CURRENT GENERATOR MEANS THROUGH SAID DROPLET TENDS TO RESIST THE MOTION OF SAID DROPLETS DETECTED BY SAID DISPLACEMENT SIGNAL GENERATOR.
Claim 2
Dependent Claim
147 words
A SOURCE OF MAGNETIC FIELD, A PAIR OF ELECTRICAL CONDUCTORS HAVING A SUBSTANTIALLY PARALLEL PORTIONS WITHIN SAID FIELD AND LYING IN A PLANE SUBSTANTIALLY PERPENDICULAR TO SAID FIELD, A LIQUID METAL DROPLET JOINING SAID CONDUCTORS AND FREE TO MOVE THERE ALONG, AN ELECTRODE EXTENDING IN PROXIMITY TO SAID DROPLET SO THAT THE CAPACITANCE BETWEEN SAID DROPLET AND SAID ELECTRODE VARIES AS SAID DROPLET MOVES ALONG SAID PARALLEL CONDUCTORS, A DISPLACEMENT SIGNAL GENERATOR WHICH DETECTS CHANGES IN CAPACITANCE BETWEEN SAID ELECTRODE AND SAID DROPLET, AND CURRENT GENERATOR MEANS CONNECTED TO SAID DISPLACEMENT SIGNAL GENERATOR AND RESPONSE TO THE OUTPUT OF SAID DISPLACEMENT SIGNAL GENERATOR AND SAID MEANS FURTHER COUPLED TO SAID PARALLEL CONDUCTORS THIS COUPLING BEING SUCH THAT THE FORCE PRODUCED BY THE FLOW OF CURRENT FROM SAID CURRENT GENERATOR MEANS THROUGH SAID DROPLET TENDS TO RESIST THE MOTION OF SAID DROPLETS DETECTED BY SAID DISPLACEMENT SIGNAL GENERATOR.
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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) | 1969-05-23 | 1969-11-22 | 1970-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-23 | 1973-11-22 | 1974-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-23 | 1977-11-22 | 1978-05-24 | $7700.00 | Window Closed / Lapsed |