Patent US3086385A successfully refreshed from Google Patents.
US3086385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Furnace adapted for use in dilatometry
Assignee: Compagnie de Saint Gobain SA
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Filing: 1959-10-13
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Granted: 1963-04-23
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Expires: 1979-10-13
Abstract
No abstract record available.
Inventors
- 👤 Branchereau Maurice
- 👤 Navez Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:07
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PRECISION DILATOMETER COMPRISING A SPECIMEN HOLDER, A MICROSCOPIC HEAD FOR THE SPECIMEN HOLDER, AND A FURNACE FOR HEATING THE SPECIMEN HOLDER AND THE CONTAINED SPECIMEN TO THE PREDETERMINED DESIRED TEMPERATURE, SAID FURNACE COMPRISING A FIRST, INTERNAL HEATING CHAMBER HAVING AN OPENING THEREIN ADAPTED TO RECEIVE THE SPECIMEN HOLDER, A SECOND, EXTERNAL HEATING CHAMBER CONTAINING THE FIRST CHAMBER, AND HEATING MEANS WITHIN THE SECOND CHAMBER AND OUTSIDE THE FIRST CHAMBER, SAID HEATING MEANS MAINTAINING THE INTERNAL SURFACE OF THE SECOND CHAMBER AT A PREDETERMINED TEMPERATURE, THE FIRST CHAMBER TRANSMITTING SAID PREDETERMINED DESIRED TEMPERATURE TO THE OBJECT TO BE HEATED, SAID HEATING MEANS COMPRISING A FIRST HEATING RESISTANCE COIL SURROUNDING SUBSTANTIALLY THE ENTIRE PARTITION SEPARATING THE INTERNAL CHAMBER FROM THE EXTERNAL CHAMBER AND A PLURALITY OF AUXILIARY HEATING COILS ACTING ON LOCALIZED PARTS OF THE HEIGHT OF
Claim 2
Dependent Claim
136 words
A PRECISION DILATOMETER COMPRISING A SPECIMEN HOLDER, A MICROSCOPIC HEAD FOR THE SPECIMEN HOLDER, AND A FURNACE FOR HEATING THE SPECIMEN HOLDER AND THE CONTAINED SPECIMEN TO THE PREDETERMINED DESIRED TEMPERATURE, SAID FURNACE COMPRISING A FIRST, INTERNAL HEATING CHAMBER HAVING AN OPENING THEREIN ADAPTED TO RECEIVE THE SPECIMEN HOLDER, A SECOND, EXTERNAL HEATING CHAMBER CONTAINING THE FIRST CHAMBER, AND HEATING MEANS WITHIN THE SECOND CHAMBER AND OUTSIDE THE FIRST CHAMBER, SAID HEATING MEANS MAINTAINING THE INTERNAL SURFACE OF THE SECOND CHAMBER AT A PREDETERMINED TEMPERATURE, THE FIRST CHAMBER TRANSMITTING SAID PREDETERMINED DESIRED TEMPERATURE TO THE OBJECT TO BE HEATED, SAID HEATING MEANS COMPRISING A FIRST HEATING RESISTANCE COIL SURROUNDING SUBSTANTIALLY THE ENTIRE PARTITION SEPARATING THE INTERNAL CHAMBER FROM THE EXTERNAL CHAMBER AND A PLURALITY OF AUXILIARY HEATING COILS ACTING ON LOCALIZED PARTS OF THE HEIGHT OF
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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) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |