Patent US4024409A successfully refreshed from Google Patents.
Patent US3450145A successfully refreshed from Google Patents.
US3450145A
Expired / Lapsed
US
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Accelerometer
Assignee: Bowles Engineering Corp
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Filing: 1966-06-13
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Granted: 1969-06-17
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 John R Colston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:27
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/03; G01P15/038; F; F15; F15C; F15C1/00; F15C1/005; G01C; G01C19/00; G01C19/02; G01C19/04; G01C19/06; G01C19/14; Y; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A FLUIDIC ACCELEROMETER COMPRISING A PAIR OF COAXIAL HELICAL PASSAGES WOUND IN OPPOSITE SENSES, MEANS FOR APPLYING A DIFFERENTIAL FLUID SIGNAL TO ONE END OF EACH OF SAID HELICAL PASSAGES SUCH THAT FLUID FLOWS IN SAID PASSAGES IN OPPOSITE SENSES, SAID PASSAGES BEING CAPABLE OF ROTATION ABOUT THEIR AXIS AS A FUNCTION OF AN ANGULAR ACCELERATION TO BE SENSED.
Claim 2
Dependent Claim
59 words
A FLUIDIC ACCELEROMETER COMPRISING A PAIR OF COAXIAL HELICAL PASSAGES WOUND IN OPPOSITE SENSES, MEANS FOR APPLYING A DIFFERENTIAL FLUID SIGNAL TO ONE END OF EACH OF SAID HELICAL PASSAGES SUCH THAT FLUID FLOWS IN SAID PASSAGES IN OPPOSITE SENSES, SAID PASSAGES BEING CAPABLE OF ROTATION ABOUT THEIR AXIS AS A FUNCTION OF AN ANGULAR ACCELERATION TO BE SENSED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |