US3194072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition responsive devices
Assignee: Honeywell Inc
•
Filing: 1962-02-02
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Granted: 1965-07-13
•
Expires: 1982-02-02
Abstract
No abstract record available.
Inventors
- 👤 John L Vaala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:19
CPC Classifications
G; G01; G01K; G01K3/00; G01K3/02; G01K3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A DEVICE FOR INDICATING THE EXTENT OF EXPOSURE TO A TEMPERATURE EXCEEDING A CERTAIN MINMUM SAID DEVICE INCLUDING A POROUS MATRIX MEDIUM IMPREGNATED WITH AN AQUEOUS ELECTROLYTE SUBSTANCE IN CONTACT WITH A METAL MEMBER ABOVE HYDROGEN IN THE E.M.F. SERIES NEAR ONE END THEREOF, AND WHEREIN THE INDICATION IS PROVIDED BY THE DETECTION OF IONS MIGRATING ALONG SAID POROUS MATRIX, SAID IONS BEING GENERATED AT A METAL-ELECTROLYTE INTERFACE, THE RATE OF GENERATION OF SAID IONS BEING DEPENDENT ON THE RATE OF MIGRATION OF THE WATER OF SAID ELECTROLYTE SUBSTANCE TO SAID METAL-ELECTROLYTE INTERFACE, THE IMPROVEMENT WHICH COMPRISES INCLUDING WITHIN SAID ELECTROLYTE SUBSTANCE A WATER MISCIBLE ORGANIC WATER BINDING SUBSTANCE HAVING AT LEAST TWO HYDROXYL GROUPS CAPABLE OF RETARDING THE RATE AT WHICH SAID WATER MAY DIFFUSE TO SAID METAL-ELECTROLYTE INTERFACE.
Claim 2
Dependent Claim
131 words
IN A DEVICE FOR INDICATING THE EXTENT OF EXPOSURE TO A TEMPERATURE EXCEEDING A CERTAIN MINMUM SAID DEVICE INCLUDING A POROUS MATRIX MEDIUM IMPREGNATED WITH AN AQUEOUS ELECTROLYTE SUBSTANCE IN CONTACT WITH A METAL MEMBER ABOVE HYDROGEN IN THE E.M.F. SERIES NEAR ONE END THEREOF, AND WHEREIN THE INDICATION IS PROVIDED BY THE DETECTION OF IONS MIGRATING ALONG SAID POROUS MATRIX, SAID IONS BEING GENERATED AT A METAL-ELECTROLYTE INTERFACE, THE RATE OF GENERATION OF SAID IONS BEING DEPENDENT ON THE RATE OF MIGRATION OF THE WATER OF SAID ELECTROLYTE SUBSTANCE TO SAID METAL-ELECTROLYTE INTERFACE, THE IMPROVEMENT WHICH COMPRISES INCLUDING WITHIN SAID ELECTROLYTE SUBSTANCE A WATER MISCIBLE ORGANIC WATER BINDING SUBSTANCE HAVING AT LEAST TWO HYDROXYL GROUPS CAPABLE OF RETARDING THE RATE AT WHICH SAID WATER MAY DIFFUSE TO SAID METAL-ELECTROLYTE INTERFACE.
References Cited (Backward Citations)
US3046786A
Cited
US3082624A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |