Patent US3924251A successfully refreshed from Google Patents.
US3924251A
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US
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Input signal powered converter
Assignee: Hydril LLC
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Filing: 1974-03-25
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Granted: 1975-12-02
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Expires: 1994-03-25
Abstract
Abstract Input signal powered converter apparatus comprises A. A SIGNAL SOURCE TO PRODUCE AN ANALOG OUTPUT CURRENT, B. CONVERTER MEANS RESPONSIVE TO THE SOURCE OUTPUT CURRENT TO PRODUCE AN OSCILLATORY OUTPUT SIGNAL WHICH VARIES AS A LINEAR FUNCTION OF THE SOURCE OUTPUT CURRENT, C. A DETECTOR RESPONSIVE TO SAID OSCILLATORY OUTPUT SIGNAL, AND D. CIRCUITRY COUPLED BETWEEN THE SOURCE OUTPUT AND THE CONVERTER MEANS TO ELECTRICALLY ENERGIZE THE CONVERTER MEANS IN RESPONSE TO CURRENT SUPPLIED BY THE SOURCE OUTPUT.
Inventors
- 👤 Geoffrey J Crask
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:40
CPC Classifications
G; G08; G08C; G08C19/00; G08C19/16; G08C19/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
In convertor apparatus, a. current generating transducer meAns to produce an analog output current, b. Converter means responsive to said transducer means output current to produce an oscillatory output signal which varies as a linear function of said transducer means output current, c. a current measuring resistor, d. A voltage regulator, e. a series circuit of said transducer means, said resitor, and said voltage regulator, f. said converter means having its input coupled to said resistor to be controlled by said analog output current, g. said voltage regulator energizing said converter means, and h. sensing means responsive to said output signal for yielding an analog output corresponding to said transducer means input.
Claim 2
Dependent Claim
112 words
In convertor apparatus, a. current generating transducer meAns to produce an analog output current, b. Converter means responsive to said transducer means output current to produce an oscillatory output signal which varies as a linear function of said transducer means output current, c. a current measuring resistor, d. A voltage regulator, e. a series circuit of said transducer means, said resitor, and said voltage regulator, f. said converter means having its input coupled to said resistor to be controlled by said analog output current, g. said voltage regulator energizing said converter means, and h. sensing means responsive to said output signal for yielding an analog output corresponding to said transducer means input.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein the converter means comprises a voltage controlled oscillator responsive to said output current.
Claim 4
Dependent Claim
40 words
The apparatus of claim 2 wherein the converter means energizes a light emitting diode with light sensor means responsive to the output of the light emitting diode to produce electrical pulses, and a pulse counter connected to said light sensor.
Claim 5
Dependent Claim
51 words
The apparatus of claim 1 wherein the converter means comprises an r.f. oscillator whose output is coupled to said sensing means and modulator means responsive to said output current coupled to the oscillator to control the output frequency of the oscillator as a linear function of variations in the source output.
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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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |