US3147391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Angular accelerometer
Assignee: Individual
•
Filing: 1961-03-27
•
Granted: 1964-09-01
•
Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Darrel Bernard
- 👤 Paul B Boswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:57
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/0888
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
AN ANGULAR ACCELEROMETER COMPRISING IN COMBINATION A FLUID MASS, A CONTAINER THEREFOR, SEPARATION MEANS DIVIDING SAID CONTAINER INTO A PLURALITY OF CHAMBERS, AT LEAST ONE OF SAID SEPARATION MEANS COMPRISING A PAIR OF MATCHED STRESS RESPONSIVE PIEZOELECTRIC CRYSTALS FOR PRODUCING AN ELECTRICAL VOLTAGE CORRESPONSING TO ANGULAR ACCELERATION FORCES IMPARTED TO SAID FLUID MASS, EACH OF THE MATCHED CRYSTALS IN SAID PIEZOELECTRIC CRYSTAL PAIRS BEING ELECTRICALLY CONNECTED TO ITS MATCHING CRYSTAL SO THAT ANY CHARGE IN ONE OF SAID CRYSTALS PRODUCED BY A LINEAR FORCE BEING APPLIED THERETO WILL BE CANCELLED BY AN EQUAL AND OPPOSITE CHARGE ON ITS MATCHING CRYSTAL, AND OUTPUT MEANS ELECTRICALLY CONNECTED TO SAID CRYSTAL PAIR SO THAT AN OUTPUT VOLTAGE RESULTING FROM A CHARGE ON SAID CRYSTAL PAIR DUE TO ANGULAR ACCELERATION IS UTILIZED TO INDICATE THE MAGNITUDE OF THE ANGULAR ACCELERATION.
Claim 2
Dependent Claim
136 words
AN ANGULAR ACCELEROMETER COMPRISING IN COMBINATION A FLUID MASS, A CONTAINER THEREFOR, SEPARATION MEANS DIVIDING SAID CONTAINER INTO A PLURALITY OF CHAMBERS, AT LEAST ONE OF SAID SEPARATION MEANS COMPRISING A PAIR OF MATCHED STRESS RESPONSIVE PIEZOELECTRIC CRYSTALS FOR PRODUCING AN ELECTRICAL VOLTAGE CORRESPONSING TO ANGULAR ACCELERATION FORCES IMPARTED TO SAID FLUID MASS, EACH OF THE MATCHED CRYSTALS IN SAID PIEZOELECTRIC CRYSTAL PAIRS BEING ELECTRICALLY CONNECTED TO ITS MATCHING CRYSTAL SO THAT ANY CHARGE IN ONE OF SAID CRYSTALS PRODUCED BY A LINEAR FORCE BEING APPLIED THERETO WILL BE CANCELLED BY AN EQUAL AND OPPOSITE CHARGE ON ITS MATCHING CRYSTAL, AND OUTPUT MEANS ELECTRICALLY CONNECTED TO SAID CRYSTAL PAIR SO THAT AN OUTPUT VOLTAGE RESULTING FROM A CHARGE ON SAID CRYSTAL PAIR DUE TO ANGULAR ACCELERATION IS UTILIZED TO INDICATE THE MAGNITUDE OF THE ANGULAR ACCELERATION.
References Cited (Backward Citations)
US2880333A
Cited
US2949782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |