US3758756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microminiature center mountable on the engine
Assignee: SCIENT INSTR Inc
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Filing: 1972-01-12
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Granted: 1973-09-11
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Expires: 1992-01-12
Abstract
Abstract A miniaturized recorder and display device for the compilation of engine operating parameters for mounting within or about an engine housing comprising at least one microminiature control circuit, a plurality of counters and indicators for the various engine parameters, and a heat resistant housing means attachable to the inside or about the engine housing. Input data from operating engine sensors is received by the control circuitry which activates the appropriate indicating dial.
Inventors
- 👤 D Johns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:13
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/02; G07C3/04; G07C3/045; G06; G06M; G06M3/00; G06M3/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
158 words
A microminiature recorder and display device for accumulating jet engine operating information in a high temperature environment comprising: first AC signal input means; first filter means coupled to said first AC input means; second filter means coupled to said first AC input means in parallel with said first filter means; first triggering means connected to said first filter means; second triggering means connected to said second filter means; delay means coupled to said first triggering means; AND gate coupled to said delay means and said second triggering means; first indicating means; and miniaturized means for driving the indicating means coupled to and responsive to signal from said AND gate, whereby said first filter and said second filter pass AC signals of different characteristic values so that the indicating means is responsive to a predetermined time delay between receipt of the characteristic value at the first filter means and the second filter means from the first AC input means.
Claim 2
Dependent Claim
158 words
A microminiature recorder and display device for accumulating jet engine operating information in a high temperature environment comprising: first AC signal input means; first filter means coupled to said first AC input means; second filter means coupled to said first AC input means in parallel with said first filter means; first triggering means connected to said first filter means; second triggering means connected to said second filter means; delay means coupled to said first triggering means; AND gate coupled to said delay means and said second triggering means; first indicating means; and miniaturized means for driving the indicating means coupled to and responsive to signal from said AND gate, whereby said first filter and said second filter pass AC signals of different characteristic values so that the indicating means is responsive to a predetermined time delay between receipt of the characteristic value at the first filter means and the second filter means from the first AC input means.
Claim 3
Dependent Claim
77 words
A microminiature recording and display device as in claim 1, including: first DC signal input means, the signal representative of a predetermined engine parameter; miniaturized means for amplifying said DC input signal coupled to said input means; second indicating means; and means for driving said second indicating means coupled to and responsive to said smplifying means, whereby a DC input signal representative of a particular engine parameter will be recorded and displayed by said second indicating means.
Claim 4
Dependent Claim
43 words
A recording and display device as in claim 2, wherein said first indicating means includes: a fault window indicator; and heat shielding means encompassing said entire device including said fault window display for protecting said device from exterior temperatures up to 400* Fahrenheit.
Claim 5
Dependent Claim
47 words
A recording and display device as in claim 3, wherein said second indicating means includes: a plurality of cylindrical rotating dials having numbers printed about their circumference from 0 through 9, the numbers being grouped together to provide a display readout corresponding to the particular input signal.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |