US3307401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Element for measurement of furnace wall thickness and temperature
Assignee: Individual
•
Filing: 1965-05-24
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Granted: 1967-03-07
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Expires: 1985-05-24
Abstract
No abstract record available.
Inventors
- 👤 George S Bachman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:07
CPC Classifications
F; F27; F27D; F27D21/00; F27D21/0021; G; G01; G01B; G01B7/00; G01B7/02; G01B7/06; G01K; G01K7/00; G01K7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
AN ELEMENT CAPABLE OF MEASURING TEMPERATURE, WALL THICKNESS, OR BOTH TEMPERATURE AND WALL THICKNESS, AND ADAPTED FOR USE IN REFRACTORY WALLS, ROOFS, AND BOTTOMS, COMPRISING A REFRACTORY SHEATH, SPACED CONDUCTOR ELEMENTS OF DIFFERENT MATERIALS RUNNING LONGITUDINALLY THROUGH SAID SHEATH, AND, SPACING MATERIALS BETWEEN SAID CONDUCTOR ELEMENTS, SAID SPACING MATERIALS COMPRISING ALTERNATE SECTIONS OF INSULATING MATERIAL AND SEMICONDUCTIVE MATERIAL, SAID SEMICONDUCTIVE MATERIAL BEING IN INTIMATE ELECTRICAL CONTACT WITH SAID CONDUCTOR ELEMENTS.
Claim 2
Dependent Claim
70 words
AN ELEMENT CAPABLE OF MEASURING TEMPERATURE, WALL THICKNESS, OR BOTH TEMPERATURE AND WALL THICKNESS, AND ADAPTED FOR USE IN REFRACTORY WALLS, ROOFS, AND BOTTOMS, COMPRISING A REFRACTORY SHEATH, SPACED CONDUCTOR ELEMENTS OF DIFFERENT MATERIALS RUNNING LONGITUDINALLY THROUGH SAID SHEATH, AND, SPACING MATERIALS BETWEEN SAID CONDUCTOR ELEMENTS, SAID SPACING MATERIALS COMPRISING ALTERNATE SECTIONS OF INSULATING MATERIAL AND SEMICONDUCTIVE MATERIAL, SAID SEMICONDUCTIVE MATERIAL BEING IN INTIMATE ELECTRICAL CONTACT WITH SAID CONDUCTOR ELEMENTS.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |