Patent US3269185A successfully refreshed from Google Patents.
US3269185A
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Dewpoint sensing structure
Assignee: Cambridge Systems Inc
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Filing: 1963-01-28
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Granted: 1966-08-30
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Expires: 1983-01-28
Abstract
No abstract record available.
Inventors
- 👤 Charles C Francisco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:33
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/56; G01N25/66; G01N25/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A DEWPOINT SENSING STRUCTURE, THE COMBINATION OF A CHAMBER HAVING AN INLET AND AN OUTLET FOR A GAS WHOSE DEWPOINT IS TO BE MEASURED, A MIRROR HAVING A HIGHLY REFLECTIVE SURFACE IN THE CHAMBER, A THERMOELECTRIC COOLER HAVING COLD AND HOT SIDES WITH THE COLD SIDE IN THERMAL ENGAGEMENT WITH THE MIRROR, A DIRECTIONAL LIGHT MEANS DISPOSED TO ILLUMINATE THE REFLECTIVE SURFACE OF THE MIRROR, A FIRST PHOTOSENSITIVE ELEMENT MOUNTED TO RECEIVE DIRECTLY REFLECTED LIGHT FROM THE REFLECTIVE SURFACE OF THE MIRROR, A SCOND PHOTOSENSITIVE ELEMENT MOUNTED TO RECEIVE ONLY SCATTER LIGHT FROM THE REFLECTIVE SURFACE OF THE MIRROR, HEAT
Claim 2
Dependent Claim
101 words
IN A DEWPOINT SENSING STRUCTURE, THE COMBINATION OF A CHAMBER HAVING AN INLET AND AN OUTLET FOR A GAS WHOSE DEWPOINT IS TO BE MEASURED, A MIRROR HAVING A HIGHLY REFLECTIVE SURFACE IN THE CHAMBER, A THERMOELECTRIC COOLER HAVING COLD AND HOT SIDES WITH THE COLD SIDE IN THERMAL ENGAGEMENT WITH THE MIRROR, A DIRECTIONAL LIGHT MEANS DISPOSED TO ILLUMINATE THE REFLECTIVE SURFACE OF THE MIRROR, A FIRST PHOTOSENSITIVE ELEMENT MOUNTED TO RECEIVE DIRECTLY REFLECTED LIGHT FROM THE REFLECTIVE SURFACE OF THE MIRROR, A SCOND PHOTOSENSITIVE ELEMENT MOUNTED TO RECEIVE ONLY SCATTER LIGHT FROM THE REFLECTIVE SURFACE OF THE MIRROR, HEAT
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |