Patent US3352149A successfully refreshed from Google Patents.
US3352149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1964-12-24
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Granted: 1967-11-14
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Jack G Sherlock
- 👤 James R Reames
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:42
CPC Classifications
G; G01; G01N; G01N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A DEVICE FOR INDICATING THE AMOUNT AND RATE OF ADVANCE OF CHAR COMPRISING IN COMBINATION: A MASS COMPRISED OF AN ABLATIVE, INSULATIVE OR LIKE MATERIAL HAVING A PLURALITY OF TRANSVERSE APERTURES THERETHROUGH, THE LOWER SURFACE OF SAID MASS BEING SUBJECTED TO A HEAT SOURCE; A SPRING RETAINER HAVING WIRE MEANS SECURED THERETO, SAID WIRE MEANS PASSING THROUGH SAID APERTURES; A SPRING DISPOSED BETWEEN SAID SPRING RETAINER AND THE UPPER SURFACE OF SAID MASS; AND BALL MEANS SECURED TO SAID WIRE MEANS ADJACENT THE LOWER SURFACE OF SAID MATERIAL, SAID BALL MEANS BEING SO DIMENSIONED AS TO NORMALLY PREVENT PASSAGE THEREOF THROUGH SAID APERTURES; WHEREBY, AS THE SURFACE OF SAID MATERIAL ADJACENT SAID BALL MEANS UPON SUBJECTION TO A HEAT SOURCE CHARS, THE BALL MEANS AND THE SPRING RETAINER COACT UNDER THE INFLUENCE OF SAID SPRING TO MOVE UPWARDLY, THEREBY PROVIDING AN INDICATION OF THE AMOUNT OF CHAR, AND WHEREBY THE RATE OF ADVANCE OF THE CHAR MAY BE DETERMINED BY SUCCESSIVE INDICATIONS AS OBTAINED AT PREDETERMINED INTERVALS DURING A PREDETERMINED PERIOD OF TIME.
Claim 2
Independent Claim
173 words
A DEVICE FOR INDICATING THE AMOUNT AND RATE OF ADVANCE OF CHAR COMPRISING IN COMBINATION: A MASS COMPRISED OF AN ABLATIVE, INSULATIVE OR LIKE MATERIAL HAVING A PLURALITY OF TRANSVERSE APERTURES THERETHROUGH, THE LOWER SURFACE OF SAID MASS BEING SUBJECTED TO A HEAT SOURCE; A SPRING RETAINER HAVING WIRE MEANS SECURED THERETO, SAID WIRE MEANS PASSING THROUGH SAID APERTURES; A SPRING DISPOSED BETWEEN SAID SPRING RETAINER AND THE UPPER SURFACE OF SAID MASS; AND BALL MEANS SECURED TO SAID WIRE MEANS ADJACENT THE LOWER SURFACE OF SAID MATERIAL, SAID BALL MEANS BEING SO DIMENSIONED AS TO NORMALLY PREVENT PASSAGE THEREOF THROUGH SAID APERTURES; WHEREBY, AS THE SURFACE OF SAID MATERIAL ADJACENT SAID BALL MEANS UPON SUBJECTION TO A HEAT SOURCE CHARS, THE BALL MEANS AND THE SPRING RETAINER COACT UNDER THE INFLUENCE OF SAID SPRING TO MOVE UPWARDLY, THEREBY PROVIDING AN INDICATION OF THE AMOUNT OF CHAR, AND WHEREBY THE RATE OF ADVANCE OF THE CHAR MAY BE DETERMINED BY SUCCESSIVE INDICATIONS AS OBTAINED AT PREDETERMINED INTERVALS DURING A PREDETERMINED PERIOD OF TIME.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |