US3199340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerometer with fm output
Assignee: Individual
•
Filing: 1963-05-29
•
Granted: 1965-08-10
•
Expires: 1983-05-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Hartenstein
- 👤 Edward J Kirchman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A TRANSDUCER FOR PRODUCING AN ELECTRICAL OUTPUT WHICH IS FREQUENCY MODULATED IN ACCORDANCE WITH THE MAGNITUDE OF A STRAIN COMPRISING: AN IMPEDANCE, A VOLTAGE SOURCE AND A TRANSISTOR WITH A NEGATIVE IMPEDANCE CHARACTERISTIC CONNECTED IN SERIES WHEREBY CONSTANT FREQUENCY OSCILLATIONS ARE PRODUCED ACROSS SAID IMPEDANCE; AND STRAIN SENSITIVE MEANS WHICH PRODUCES AN IMPEDANCE CHANGE RELATED TO THE MAGNITUDE OF THE STRAIN TO WHICH IT IS SUBJECTED CONNECTED IN SERIES WITH SAID IMPEDANCE, VOLTAGE SOURCE AND TRANSISTOR WHEREBY WHEN SAID STRAIN SENSITIVE MEANS IS SUBJECTED TO SAID STRAIN THE FREQUENCY OF SAID OSCILLATIONS PRODUCED ACROSS SAID IMPEDANCE WILL CHANGE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US3015959A
Cited
US3054070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |