US3311014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractometer for indicating the index of refraction of a fluid stream
Assignee: Honeywell Inc
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Filing: 1961-09-08
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Granted: 1967-03-28
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Witt Walter
- 👤 Thomas H Lotze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:48
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/41; G01N21/43; G01N21/431
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A LIGHT TO ELECTRICAL SIGNAL TRANSFORMING APPARATUS TO PRODUCE CONTINUOUSLY AN ELECTRICAL SIGNAL FOR TRANSMISSION WHOSE MAGNITUDE IS PROPORTIONAL TO THE INDEX OF REFRACTION OF A FLUID UNDER MEASUREMENT, COMPRISING A LIGHT TRANSMITTING ROD, A LIGHT EMITTING OPTICAL MEANS TO FOCUS THE APEX OF A CONE OF LIGHT RAYS AGAINST AN EDGE PORTION OF A FLAT END SURFACE OF ONE END OF THE ROD AND THENCE AGAINST A PERIPHERAL SIDE WALL SURFACE OF THE ROD, AN INCLOSED REFLECTING COATING ON THE OPPOSITE END OF THE ROD, AND A LIGHT SENSING MEANS POSITIONED TO RECEIVE LIGHT EMITTED FROM THE REMAINING FLAT SURFACE PORTION OF THE FIRST-MENTIONED END SURFACE OF THE ROD TO THEREBY GENERATE AN ELECTRICAL SIGNAL PROPORTIONAL TO THE INTENSITY OF THE LIGHT REFRACTED THEREFROM.
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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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |