US3324729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for detecting leaks
Assignee: General Electric Co
•
Filing: 1964-09-14
•
Granted: 1967-06-13
•
Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Vanderslice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:29
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/12; H01J41/18; H01J41/20; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
121 words
APPARATUS FOR DETECTING LEAKS IN AN EVACUATED SYSTEM COMPRISING: (A) A TRIODE TYPE ION PUMP ADAPTED TO BE CONNECTED TO SAID SYSTEM; (B) MEANS FOR INSTANTANEOUSLY CONVERTING SAID PUMP TO DIODE-TYPE OPERATION IN WHICH SAID PUMP OPERATES TO MAINTAIN SAID SYSTEM FREE OF ACTIVE GASES WHILE ALLOWING INERT GASES TO ACCUMULATE THEREIN AND FOR INSTANTANEOUSLY RETURNING SAID PUMP TO TRIODE-TYPE OPERATION AFTER A TESTING OPERATION; (C) MEANS FOR DIRECTING INERT GAS AGAINST THE EXTERIOR OF SAID EVACUATED SYSTEM WHILE SAID PUMP IS OPERATING AS A DIODE-TYPE PUMP SO THAT SAID GAS MAY ENTER THROUGH ANY LEAKS IN SAID SYSTEM; AND (D) MEANS FOR DETECTING AN INCREASE IN PRESSURE WITHIN SAID SYSTEM DUE TO SAID INTRODUCTION OF INERT GAS THROUGH SAID LEAKS.
References Cited (Backward Citations)
US2526038A
Cited
US2550498A
Cited
US3080104A
Cited
US3085198A
Cited
US3070992A
Cited
US3076139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |