US3798454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for counting accelerations, measuring magnitudes thereof, recording and classifying the same according to magnitude
Assignee: United States Department of the Navy
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Filing: 1972-04-25
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Granted: 1974-03-19
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Expires: 1992-04-25
Abstract
Abstract An accelerometer comprising a resiliently mounted shutter element mounted between a light source and an array of light detecting elements so that acceleration forces move the shutter element to permit the light source to activate one or more of the light detecting elements according to the magnitude of the forces and generate signals which are recorded, classified according to magnitude, and counted for evaluation at the end of a predetermined period.
Inventors
- 👤 D Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:14
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/12; G01P1/127; G01P15/00; G01P15/02; G01P15/08; G01P15/093
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
117 words
Acceleration responsive apparatus, comprising: a radiant energy source formed to be fixed to a structure; an opaque mass juxtapositioned from said source and displaceable relative thereto within predetermined limits in proportion to acceleration in one direction, said mass having an aperture therein forming a beam of the radiant energy displaceable with said mass; a plurality of radiant energy detectors juxtapositioned from said mass and fixed relative to said source, said detectors intercepting the beam at discrete displacements corresponding to predetermined increments of acceleration in said one direction; and a plurality of counter means each operatively connected to respective ones of said detectors for counting the number of times each of said predetermined increments of acceleration are exceeded.
Claim 2
Dependent Claim
117 words
Acceleration responsive apparatus, comprising: a radiant energy source formed to be fixed to a structure; an opaque mass juxtapositioned from said source and displaceable relative thereto within predetermined limits in proportion to acceleration in one direction, said mass having an aperture therein forming a beam of the radiant energy displaceable with said mass; a plurality of radiant energy detectors juxtapositioned from said mass and fixed relative to said source, said detectors intercepting the beam at discrete displacements corresponding to predetermined increments of acceleration in said one direction; and a plurality of counter means each operatively connected to respective ones of said detectors for counting the number of times each of said predetermined increments of acceleration are exceeded.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 in which said radiant energy source comprises a visible light source, and said detectors comprise photodetecting units operatively connected to actuate said counter means when said photodetecting units are illuminated by light from said light source.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2 in which said mass comprises an elongated flat element resiliently supported by spring support means connected to the structure for movement in the one direction.
Claim 5
Dependent Claim
26 words
The apparatus of claim 3 which further comprises: self-contained power supply means operatively connected to render said counter means, said detectors, and said light source operative.
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |