Patent US3314283A successfully refreshed from Google Patents.
US3314283A
Expired / Lapsed
US
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Leak testing method and apparatus
Assignee: Ajem Laboratories Inc
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Filing: 1964-06-16
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Granted: 1967-04-18
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Expires: 1984-06-16
Abstract
No abstract record available.
Inventors
- 👤 Fitzpatrick Richard Thomas
- 👤 Jr Ray Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
G; G07; G07C; G07C3/00; G07C3/14; G01; G01L; G01L9/00; G01L9/0041; G01L9/0072; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3236; G01M3/3263
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD OF TESTING PARTS FOR LEAKS WHICH COMPRISES THE STEPS OF SUBJECTING THE OPPOSITE SIDES OF A WALL OF A PART TO BE TESTED TO A DIFFERENCE IN PRESSURE, FORMING A CLOSED CHAMBER ON AT LEAST ONE SIDE OF SAID WALL, CONNECTING SAID CHAMBER TO A STANDARD CHAMBER, SEGREGATING THE TWO CHAMBERS AFTER THE PRESSURE THEREIN IS EQUALIZED, MEASURING ANY DIFFERENCE IN PRESSURE IN THE TWO CHAMBERS DURING A PREDETERMINED PERIOD OF TIME, PRODUCING A VOLTAGE DIRECTLY PROPORTIONAL TO ANY MEASURED DIFFERENCE IN PRESSURE, UTILIZING ANY VOLTAGE SO PRODUCED TO ACTUATE A RESPONSIVE DEVICE TO INDICATE THE OCCURRENCE OF A LEAK, SUBSEQUENTIALLY PERFORMING THE STEPS OF FORMING THE CLOSED CHAMBER, SEGREGATING THE TWO CHAMBERS AND MEASURING ANY DIFFERENCE IN PRESSURE BY SUCCESSIVE RC NETWORKS EACH HAVING A PREDETERMINED TIME PERIOD, AND ENERGIZING THE SUCCESSIVE NETWORKS BY OPERATION OF THE PRECEDING NETWORK WHEREBY TO AUTOMATICALLY PERFORM A TESTING OPERATION BY FORCES PRODUCED BY EACH SUCCESSIVE STEP.
Claim 2
Independent Claim
156 words
A METHOD OF TESTING PARTS FOR LEAKS WHICH COMPRISES THE STEPS OF SUBJECTING THE OPPOSITE SIDES OF A WALL OF A PART TO BE TESTED TO A DIFFERENCE IN PRESSURE, FORMING A CLOSED CHAMBER ON AT LEAST ONE SIDE OF SAID WALL, CONNECTING SAID CHAMBER TO A STANDARD CHAMBER, SEGREGATING THE TWO CHAMBERS AFTER THE PRESSURE THEREIN IS EQUALIZED, MEASURING ANY DIFFERENCE IN PRESSURE IN THE TWO CHAMBERS DURING A PREDETERMINED PERIOD OF TIME, PRODUCING A VOLTAGE DIRECTLY PROPORTIONAL TO ANY MEASURED DIFFERENCE IN PRESSURE, UTILIZING ANY VOLTAGE SO PRODUCED TO ACTUATE A RESPONSIVE DEVICE TO INDICATE THE OCCURRENCE OF A LEAK, SUBSEQUENTIALLY PERFORMING THE STEPS OF FORMING THE CLOSED CHAMBER, SEGREGATING THE TWO CHAMBERS AND MEASURING ANY DIFFERENCE IN PRESSURE BY SUCCESSIVE RC NETWORKS EACH HAVING A PREDETERMINED TIME PERIOD, AND ENERGIZING THE SUCCESSIVE NETWORKS BY OPERATION OF THE PRECEDING NETWORK WHEREBY TO AUTOMATICALLY PERFORM A TESTING OPERATION BY FORCES PRODUCED BY EACH SUCCESSIVE STEP.
References Cited (Backward Citations)
US3031884A
Cited
US2924965A
Cited
US3028750A
Cited
US3221539A
Cited
US2936611A
Cited
US3091958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |