US3246505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak detection method and apparatus
Assignee: Boeing Co
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Filing: 1963-09-09
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Granted: 1966-04-19
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Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Paul L Koehmstedt
- 👤 Weightstill W Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:20
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22; G01M3/226; G01M3/229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A METHOD OF DETECTING LEAKS IN A CLOSED ASSEMBLY COMPRISING THE STEPS OF CONTAINING A CARRIER FLUID HAVING LIQUID AND GASEOUS PHASES, MIXING A TRACER GAS WITH THE GASEOUS PHASE OF THE CARRIER FLUID, HEATING THE LIQUID PHASE OF THE CARRIER FLUID TO INCREASE THE PRESSURE OF THE MIXTURE, TRANSFERRING THE TRACER GAS BY BOILING THE LIQUID PHASE OF THE CARRIER FLUID AND COOLING THE TRACER GAS, AND DETERMINING THE AMOUNT OF TRACER GAS REMAINING IN THE MIXTURE.
Claim 2
Independent Claim
78 words
A METHOD OF DETECTING LEAKS IN A CLOSED ASSEMBLY COMPRISING THE STEPS OF CONTAINING A CARRIER FLUID HAVING LIQUID AND GASEOUS PHASES, MIXING A TRACER GAS WITH THE GASEOUS PHASE OF THE CARRIER FLUID, HEATING THE LIQUID PHASE OF THE CARRIER FLUID TO INCREASE THE PRESSURE OF THE MIXTURE, TRANSFERRING THE TRACER GAS BY BOILING THE LIQUID PHASE OF THE CARRIER FLUID AND COOLING THE TRACER GAS, AND DETERMINING THE AMOUNT OF TRACER GAS REMAINING IN THE MIXTURE.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |