Patent US2746286A successfully refreshed from Google Patents.
US2746286A
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Apparatus for automatic flash point testing
Assignee: Standard Oil Co
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Filing: 1951-03-09
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Granted: 1956-05-22
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Expires: 1971-03-09
Abstract
No abstract record available.
Inventors
- 👤 Evon C Greanias
- 👤 Robert B Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:32
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/50; G01N25/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A FLASH TESTING APPARATUS, A HEATED FLASH CHAMBER, HEATING MEANS FOR SAID CHAMBER, A CUP WITHIN A LOWER PART OF SAID CHAMBER, CONDUIT MEANS FOR SUPPLYING TEST LIQUID TO SAID CHAMBER, AN OVERFLOW FROM SAID CUP, AN EXTENSIBLE WALL PARTIALLY CONFINING A VAPOR SPACE ABOVE SAID CUP, A SPARK IGNITION MEANS WITHIN SAID VAPOR SPACE, AND ELECTRICAL SWITCH MEANS ACTUATED BY SAID EXTENSIBLE WALL TO INDICATE THE OCCURRENCE OF A FLASH.
Claim 2
Dependent Claim
72 words
IN A FLASH TESTING APPARATUS, A HEATED FLASH CHAMBER, HEATING MEANS FOR SAID CHAMBER, A CUP WITHIN A LOWER PART OF SAID CHAMBER, CONDUIT MEANS FOR SUPPLYING TEST LIQUID TO SAID CHAMBER, AN OVERFLOW FROM SAID CUP, AN EXTENSIBLE WALL PARTIALLY CONFINING A VAPOR SPACE ABOVE SAID CUP, A SPARK IGNITION MEANS WITHIN SAID VAPOR SPACE, AND ELECTRICAL SWITCH MEANS ACTUATED BY SAID EXTENSIBLE WALL TO INDICATE THE OCCURRENCE OF A FLASH.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |