US3230760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-destructive testing of pressure vessels
Assignee: Dow Chemical Co
•
Filing: 1964-06-12
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Granted: 1966-01-25
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Expires: 1984-06-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Samuel R Fryer
- 👤 Jr Malcolm Sherrill
- 👤 Roy C Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:41
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/08; G01N3/10; G01N3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
IN A METHOD FOR THE NON-DESTRUCTIVE TESTING OF A PRESSURE VESSEL WHICH EXHIBITS ELASTIC DEFORMATION ON BEING SUBJECTED TO THE DISTENDING ACTION OF A SUBSTANTIALLY INCOMPRESSIBLE LIQUID INCLUDING THE STEPS OF; PUMPING A SUBSTANTIALLY INCOMPRESSIBLE LIQUID RECEIVED FROM A LIQUID SUPPLY CONTAINER INTO THE INTERIOR OF A LIQUID-FILLED VESSEL, THEREBY TO INCREASE THE INTERNAL PRESSURE WITHIN SAID VESSEL ABOVE THE AMBIENT PRESSURE ON SAID VESSEL; AUTOMATICALLY PLOTTING ON A RECORDER A SINGLE LINE GRAPHIC RECORD OF THE RESULTING PRESSURE INSIDE THE VESSEL AS A FUNCTION OF THE QUANTITY OF LIQUID SO INTRODUCED INTO THE VESSEL; DETERMINING FROM THE RECORD THE POINT AT WHICH THE PRES-
Claim 2
Dependent Claim
105 words
IN A METHOD FOR THE NON-DESTRUCTIVE TESTING OF A PRESSURE VESSEL WHICH EXHIBITS ELASTIC DEFORMATION ON BEING SUBJECTED TO THE DISTENDING ACTION OF A SUBSTANTIALLY INCOMPRESSIBLE LIQUID INCLUDING THE STEPS OF; PUMPING A SUBSTANTIALLY INCOMPRESSIBLE LIQUID RECEIVED FROM A LIQUID SUPPLY CONTAINER INTO THE INTERIOR OF A LIQUID-FILLED VESSEL, THEREBY TO INCREASE THE INTERNAL PRESSURE WITHIN SAID VESSEL ABOVE THE AMBIENT PRESSURE ON SAID VESSEL; AUTOMATICALLY PLOTTING ON A RECORDER A SINGLE LINE GRAPHIC RECORD OF THE RESULTING PRESSURE INSIDE THE VESSEL AS A FUNCTION OF THE QUANTITY OF LIQUID SO INTRODUCED INTO THE VESSEL; DETERMINING FROM THE RECORD THE POINT AT WHICH THE PRES-
References Cited (Backward Citations)
US2398334A
Cited
US2539843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |