US3273395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic ambient temperature compensation for a medical thermometer
Assignee: Barnes Engineering Co
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Filing: 1963-08-05
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Granted: 1966-09-20
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Schwarz Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:39
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/10; G01J5/12; G01J5/14; G01K; G01K13/00; G01K13/20; G01K7/00; G01K7/02; G01K7/10; G01K7/12; G01K7/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A RADIOMETER FOR MEASURING TEMPERATURE WHICH INCLUDES AUTOMATIC COMPENSATION FOR AMBIENT TEMPERATURE CHANGES COMPRISING (A) AN INFRARED DETECTOR, (B) MEANS FOR APPLYING RADIATION FROM AN OBJECT WHOSE TEMPERATURE IS TO BE MEASURED ON SAID DETECTOR, (C) AN AMPLITUDE STABLE ALTERNATING VOLTAGE SOURCE, (D) A VOLTAGE DIVIDER CONNECTED TO SAID AMPLITUDE STABLE ALTERNATING VOLTAGE SOURCE WHICH DIVIDER INCLUDES A TEMPERATURE RESPONSIVE RESISTOR LOCATED IN THE PROXIMITY OF SAID DETECTOR, (E) MODULATOR MEANS FOR MODULATING THE OUTPUT OF SAID DETECTOR, (F) MEANS FOR MIXING THE OUTPUTS OF SAID MODULATOR MEANS AND SAID VOLTAGE DIVIDER, (G) AMPLIFYING MEANS FOR AMPLIFYING THE MIXED MODULATED OUTPUTS, (H) DEMODULATOR MEANS FOR SYNCHRONOUSLY DEMODULATING THE OUTPUT OF SAID AMPLIFYING MEANS IN SYNCHRONISM WITH SAID MODULATOR MEANS, AND (I) UTILIZATION MEANS COUPLED TO SAID DEMODULATOR MEANS FOR PROVIDING AN INDICATION OF THE TEMPERATURE OF THE OBJECT BEING MEASURED.
Claim 2
Dependent Claim
140 words
A RADIOMETER FOR MEASURING TEMPERATURE WHICH INCLUDES AUTOMATIC COMPENSATION FOR AMBIENT TEMPERATURE CHANGES COMPRISING (A) AN INFRARED DETECTOR, (B) MEANS FOR APPLYING RADIATION FROM AN OBJECT WHOSE TEMPERATURE IS TO BE MEASURED ON SAID DETECTOR, (C) AN AMPLITUDE STABLE ALTERNATING VOLTAGE SOURCE, (D) A VOLTAGE DIVIDER CONNECTED TO SAID AMPLITUDE STABLE ALTERNATING VOLTAGE SOURCE WHICH DIVIDER INCLUDES A TEMPERATURE RESPONSIVE RESISTOR LOCATED IN THE PROXIMITY OF SAID DETECTOR, (E) MODULATOR MEANS FOR MODULATING THE OUTPUT OF SAID DETECTOR, (F) MEANS FOR MIXING THE OUTPUTS OF SAID MODULATOR MEANS AND SAID VOLTAGE DIVIDER, (G) AMPLIFYING MEANS FOR AMPLIFYING THE MIXED MODULATED OUTPUTS, (H) DEMODULATOR MEANS FOR SYNCHRONOUSLY DEMODULATING THE OUTPUT OF SAID AMPLIFYING MEANS IN SYNCHRONISM WITH SAID MODULATOR MEANS, AND (I) UTILIZATION MEANS COUPLED TO SAID DEMODULATOR MEANS FOR PROVIDING AN INDICATION OF THE TEMPERATURE OF THE OBJECT BEING MEASURED.
References Cited (Backward Citations)
US3081399A
Cited
US3156117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |