Patent US3328505A successfully refreshed from Google Patents.
US3138025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature probe
Assignee: Individual
•
Filing: 1960-07-18
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Granted: 1964-06-23
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Leroy M Fingerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:37
CPC Classifications
G; G01; G01P; G01P5/00; G01P5/10; G01P5/12; G01K; G01K7/00; G01K7/16; G01K7/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
219 words
A SYSTEM FOR THE MEASUREMENT OF PROPERTIES OF FLUIDS, SAID SYSTEM INCLUDING A SELF-BALANCING WHEATSTONE BRIDGE CIRCUIT HAVING AS ONE RESISTANCE A TEMPERATURE PROBE, SAID PROBE COMPRISING A BODY INCLUDING A TEMPERATURE SENSITIVE AREA FOR EXPOSURE TO THE FLUID WHOSE PROPERTIES ARE TO BE MEASURED AND HAVING A BASE COMPOSED OF A MATERIAL HAVING HIGH ELECTRICAL RESISTIVITY AND LOW THERMAL CONDUCTIVITY AND A METALLIC ELECTRICALLY CONDUCTIVE SURFACE COATING THEREON, CONDUCTING MEANS WITHIN THE PROBE BODY IN ELECTRICAL CONTACT WITH SAID CONDUCTIVE SURFACE COATING, CONDUCTIVE LEADS CONNECTING SAID CONDUCTING MEANS INTO SAID CURRECT FOR APPLICATION OF ELECTRIC CURRENT TO SAID CONDUCTIVE SURFACE COATING FOR THE RESISTANCE HEATING THEREOF TO MAINTAIN THE SAME AT A PREDETERMINED CONSTANT TEMPERATURE LESS THAN THE TEMPERATURE OF THE ENVIRONMENT OF THE FLUID WHOSE PROPERTIES ARE TO BE MEASURED WHEREBY HEAT MAY BE TRANSFERRED FROM THE ENVIRONMENT TO THE CONDUCTIVE SURFACE COATING, CHANNEL MEANS WITHIN SAID PROBE BODY AND EXTENDING IMMEDIATELY ADJACENT TO SAID TEMPERATURE SENSITIVE AREA, SAID CHANNEL MEANS ADAPTED FOR CONNECTION TO A SOURCE OF COOLING FLUID FOR THE CIRCULATION OF COOLING FLUID THROUGH THE PROBE BODY FOR THE POSITIVE DIRECT COOLING OF SAID BODY AND POSITIVE DIRECT COOLING OF SAID TEMPERATURE SENSITIVE AREA, AND MEANS FOR MEASURING THE AMOUNT OF CURRENT REQUIRED TO MAINTAIN THE CONDUCTIVE SURFACE COATING AT THE PREDETERMINED CONSTANT TEMPERATURE.
Claim 2
Independent Claim
219 words
A SYSTEM FOR THE MEASUREMENT OF PROPERTIES OF FLUIDS, SAID SYSTEM INCLUDING A SELF-BALANCING WHEATSTONE BRIDGE CIRCUIT HAVING AS ONE RESISTANCE A TEMPERATURE PROBE, SAID PROBE COMPRISING A BODY INCLUDING A TEMPERATURE SENSITIVE AREA FOR EXPOSURE TO THE FLUID WHOSE PROPERTIES ARE TO BE MEASURED AND HAVING A BASE COMPOSED OF A MATERIAL HAVING HIGH ELECTRICAL RESISTIVITY AND LOW THERMAL CONDUCTIVITY AND A METALLIC ELECTRICALLY CONDUCTIVE SURFACE COATING THEREON, CONDUCTING MEANS WITHIN THE PROBE BODY IN ELECTRICAL CONTACT WITH SAID CONDUCTIVE SURFACE COATING, CONDUCTIVE LEADS CONNECTING SAID CONDUCTING MEANS INTO SAID CURRECT FOR APPLICATION OF ELECTRIC CURRENT TO SAID CONDUCTIVE SURFACE COATING FOR THE RESISTANCE HEATING THEREOF TO MAINTAIN THE SAME AT A PREDETERMINED CONSTANT TEMPERATURE LESS THAN THE TEMPERATURE OF THE ENVIRONMENT OF THE FLUID WHOSE PROPERTIES ARE TO BE MEASURED WHEREBY HEAT MAY BE TRANSFERRED FROM THE ENVIRONMENT TO THE CONDUCTIVE SURFACE COATING, CHANNEL MEANS WITHIN SAID PROBE BODY AND EXTENDING IMMEDIATELY ADJACENT TO SAID TEMPERATURE SENSITIVE AREA, SAID CHANNEL MEANS ADAPTED FOR CONNECTION TO A SOURCE OF COOLING FLUID FOR THE CIRCULATION OF COOLING FLUID THROUGH THE PROBE BODY FOR THE POSITIVE DIRECT COOLING OF SAID BODY AND POSITIVE DIRECT COOLING OF SAID TEMPERATURE SENSITIVE AREA, AND MEANS FOR MEASURING THE AMOUNT OF CURRENT REQUIRED TO MAINTAIN THE CONDUCTIVE SURFACE COATING AT THE PREDETERMINED CONSTANT TEMPERATURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |