Patent US716401A successfully refreshed from Google Patents.
Patent US3361964A successfully refreshed from Google Patents.
US3361964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flaw detecting apparatus having a means for scanning the core of a cylindrical member
Assignee: RTX Corp
•
Filing: 1963-06-27
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Granted: 1968-01-02
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Expires: 1983-06-27
Abstract
No abstract record available.
Inventors
- 👤 Merlyn L Hanson
- 👤 Ziermann Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:26
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/22; G01N27/24; G01N27/72; G01N27/82; G01N27/90; G01N27/9006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
NON-DESTRUCTIVE TESTING APPARATUS FOR DETERMINING THE PRESENCE AND LOCATION OF FLAWS IN A SOLID ROCKET PROPELLANT, SAID ROCKET PROPELLANT INCLUDING A PROPELLANT MATERIAL HAVING A HOLLOW CORE ALONG ITS LONGITUDINAL AXIS, COMPRISING: A CONDUCTIVE CASE SURROUNDING AT LEAST A PORTION OF THE OUTSIDE PERIMETER OF SAID PROPELLANT, A CONDUCTOR PLATE POSITIONED ADJACENT THE INSIDE CIRCUMFERENCE OF SAID PROPELLANT MATERIAL WITHIN SAID HOLLOW CORE AND EXTENDING LATERALLY ABOUT A PORTION OF SAID INSIDE CIRCUMFERENCE, A DETECTOR COMPOSED OF CONDUCTING MATERIAL POSITIONED UPON SAID CONDUCTOR PLATE, SAID DETECTOR BEING ELECTRICALLY INSULATED FROM SAID CONDUCTOR PLATE, A SOURCE OF ALTERNATING VOLTAGE HAVING TWO TERMINALS,
Claim 2
Dependent Claim
101 words
NON-DESTRUCTIVE TESTING APPARATUS FOR DETERMINING THE PRESENCE AND LOCATION OF FLAWS IN A SOLID ROCKET PROPELLANT, SAID ROCKET PROPELLANT INCLUDING A PROPELLANT MATERIAL HAVING A HOLLOW CORE ALONG ITS LONGITUDINAL AXIS, COMPRISING: A CONDUCTIVE CASE SURROUNDING AT LEAST A PORTION OF THE OUTSIDE PERIMETER OF SAID PROPELLANT, A CONDUCTOR PLATE POSITIONED ADJACENT THE INSIDE CIRCUMFERENCE OF SAID PROPELLANT MATERIAL WITHIN SAID HOLLOW CORE AND EXTENDING LATERALLY ABOUT A PORTION OF SAID INSIDE CIRCUMFERENCE, A DETECTOR COMPOSED OF CONDUCTING MATERIAL POSITIONED UPON SAID CONDUCTOR PLATE, SAID DETECTOR BEING ELECTRICALLY INSULATED FROM SAID CONDUCTOR PLATE, A SOURCE OF ALTERNATING VOLTAGE HAVING TWO TERMINALS,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |