US3209579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas reference leak for leak detector equipment
Assignee: General Electric Co
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Filing: 1961-12-28
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Granted: 1965-10-05
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Expires: 1981-12-28
Abstract
No abstract record available.
Inventors
- 👤 John A Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:38
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A REFILLABLE LIQUID-FILLED REFERENCE LEAK OF THE HALOGEN TYPE PROVIDING A GASEOUS LEAK OUTPUT FOR TESTING AND CALIBRATING HALOGON LEAK DETECTORS: A LIQUID PROOF ENCLOSURE ADAPTED TO CONTAIN A LIQUID CHARGE WHICH WHEN VAPORIZED PROVIDES A GASEOUS TRACER TO WHICH THE LEAK DETECTOR IS SENSITIVE, A PASSAGEWAY LEADING FROM THE INTERIOR TO THE EXTERIOR OF SAID ENCLOSURE, A CLOSURE MEMBER CLOSING SAID PASSAGEWAY, SAID CLOSURE MEMBER COMPRISING A LIQUID PERMEABLE MEMBER, SAID PASSAGEWAY AND SAID PERMEABLE MEMBER BEING ORIENTED WITH RESPECT TO SAID ENCLOSURE SO THAT SAID PERMEABLE MEMBER WILL BECOME PERMEATED BY SAID LIQUID CHARGE WHEN THE ENCLOSURE IS POSITIONED SO AS TO BRING SAID LIQUID INTO CONTACT WITH THE INTERIOR SURFACE OF SAID PERMEABLE MEMBER, AN APERTURNED NOZZLE FOR CONDUCTING THE GAS EVAPORATING AT THE OUTER SURFACE OF SAID CLOSURE MEMBER TO A POINT ACCESSIBLE
Claim 2
Dependent Claim
138 words
IN A REFILLABLE LIQUID-FILLED REFERENCE LEAK OF THE HALOGEN TYPE PROVIDING A GASEOUS LEAK OUTPUT FOR TESTING AND CALIBRATING HALOGON LEAK DETECTORS: A LIQUID PROOF ENCLOSURE ADAPTED TO CONTAIN A LIQUID CHARGE WHICH WHEN VAPORIZED PROVIDES A GASEOUS TRACER TO WHICH THE LEAK DETECTOR IS SENSITIVE, A PASSAGEWAY LEADING FROM THE INTERIOR TO THE EXTERIOR OF SAID ENCLOSURE, A CLOSURE MEMBER CLOSING SAID PASSAGEWAY, SAID CLOSURE MEMBER COMPRISING A LIQUID PERMEABLE MEMBER, SAID PASSAGEWAY AND SAID PERMEABLE MEMBER BEING ORIENTED WITH RESPECT TO SAID ENCLOSURE SO THAT SAID PERMEABLE MEMBER WILL BECOME PERMEATED BY SAID LIQUID CHARGE WHEN THE ENCLOSURE IS POSITIONED SO AS TO BRING SAID LIQUID INTO CONTACT WITH THE INTERIOR SURFACE OF SAID PERMEABLE MEMBER, AN APERTURNED NOZZLE FOR CONDUCTING THE GAS EVAPORATING AT THE OUTER SURFACE OF SAID CLOSURE MEMBER TO A POINT ACCESSIBLE
References Cited (Backward Citations)
US2979937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |