Patent US3643513A successfully refreshed from Google Patents.
US3643513A
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Accelerometer
Assignee: UMC Electronics Co USA
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Filing: 1968-08-01
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Granted: 1972-02-22
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Expires: 1988-08-01
Abstract
Abstract An accelerometer for sensing and recording maneuvering acceleration loading of an aircraft where an electrical signal is produced proportional to the loading and the magnitude of the loading above a threshold level is sensed and recorded if the loading is due to maneuvering acceleration.
Inventors
- 👤 Preston R Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
G; G01; G01P; G01P15/00; G01P15/02; G01P15/08; G01P15/13; G01P15/132
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
An accelerometer for counting the number of times each of a plurality of acceleration maneuvering loadings of predetermined magnitude of an aircraft occur, comprising means adapted to be mounted to an aircraft for sensing acceleration loading thereof, means providing a signal proportional to said accelerations, a plurality of sensing and storing means each responsive to an acceleration signal reaching a different predetermined value for sensing such signal and storing an indication of the value reached, a plurality of acceleration level recording means, timing means for timing a predetermined cycle and furnishing a signal indicative of the end of said timing cycle, means responsive to an acceleration signal reaching a reference level for causing said timing means to initiate a timing cycle, means responsive to said end of cycle signal arranged to pass a signal from each of said sensing and storing means to an associated one of said recording means.
Claim 2
Dependent Claim
150 words
An accelerometer for counting the number of times each of a plurality of acceleration maneuvering loadings of predetermined magnitude of an aircraft occur, comprising means adapted to be mounted to an aircraft for sensing acceleration loading thereof, means providing a signal proportional to said accelerations, a plurality of sensing and storing means each responsive to an acceleration signal reaching a different predetermined value for sensing such signal and storing an indication of the value reached, a plurality of acceleration level recording means, timing means for timing a predetermined cycle and furnishing a signal indicative of the end of said timing cycle, means responsive to an acceleration signal reaching a reference level for causing said timing means to initiate a timing cycle, means responsive to said end of cycle signal arranged to pass a signal from each of said sensing and storing means to an associated one of said recording means.
Claim 3
Dependent Claim
16 words
The accelerometer of claim 1 further including means for filtering high-frequency components from the signal waveform.
Claim 4
Dependent Claim
64 words
The accelerometer of claim 1 wherein said means for recording comprises a plurality of counters, each counter arranged to be advanced by one of said sensing and storing means, said means for passing comprises a plurality of gates, each of said gates being arranged to apply an advance signal from one of said sensing and storing means to a respective one of said counters.
Claim 5
Dependent Claim
32 words
The accelerometer of claim 1 further including means for sensing when the signal exceeds said reference value, and disabling said sensing and storing means if the signal falls below said threshold value.
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |