US3206867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying pipe embedded in concrete
Assignee: VERTECS Corp A CORP OF WA
•
Filing: 1962-06-25
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Granted: 1965-09-21
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Expires: 1982-06-25
Abstract
No abstract record available.
Inventors
- 👤 George E Ziegler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:33
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE METHOD OF DRYING A PIPE INSTALLATION IN WHICH SAID PIPE IS SURROUNDED BY A RELATIVELY POROUS EMBEDMENT OF INSULATING CONCRETE HAVING AT LEAST ONE VENT PASSAGE EXTENDING THE FULL LENGTH OF THE EMBEDMENT AND IN PARALLEL SPACED RELATION TO SAID PIPE WHICH COMPRISED ESTABLISHING AN AIR PRESSURE DIFFERENTIAL OF AT LEAST TWO INCHES OF WATER BETWEEN THE OUTER PERPHERY OF SAID PIPE AND SAID VENT PASSAGE BY PASSING AIR UNDER SAID PRESSURE DIFFERENTIAL RADIALLY OUTWARDLY OF THE OUTER PERIPHERY OF THE PIPE THROUGH THE EMBEDMENT AND INTO SAID VENT PASSAGE, PASSING A HEATED FLUID AT A TEMPERATURE ABOVE THE BOILING POINT OF WATER THROUGH SAID PIPE, AND CONTINUING THE PASSAGE OF AIR THROUGH SAID EMBEDMENT AND INTO SAID VENT PASSAGE UNTIL THE MOISTURE CONTENT OF SAID EMBEDMENT IS SUBSTANTIALLY REDUCED.
Claim 2
Independent Claim
131 words
THE METHOD OF DRYING A PIPE INSTALLATION IN WHICH SAID PIPE IS SURROUNDED BY A RELATIVELY POROUS EMBEDMENT OF INSULATING CONCRETE HAVING AT LEAST ONE VENT PASSAGE EXTENDING THE FULL LENGTH OF THE EMBEDMENT AND IN PARALLEL SPACED RELATION TO SAID PIPE WHICH COMPRISED ESTABLISHING AN AIR PRESSURE DIFFERENTIAL OF AT LEAST TWO INCHES OF WATER BETWEEN THE OUTER PERPHERY OF SAID PIPE AND SAID VENT PASSAGE BY PASSING AIR UNDER SAID PRESSURE DIFFERENTIAL RADIALLY OUTWARDLY OF THE OUTER PERIPHERY OF THE PIPE THROUGH THE EMBEDMENT AND INTO SAID VENT PASSAGE, PASSING A HEATED FLUID AT A TEMPERATURE ABOVE THE BOILING POINT OF WATER THROUGH SAID PIPE, AND CONTINUING THE PASSAGE OF AIR THROUGH SAID EMBEDMENT AND INTO SAID VENT PASSAGE UNTIL THE MOISTURE CONTENT OF SAID EMBEDMENT IS SUBSTANTIALLY REDUCED.
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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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |