Patent US2972924A successfully refreshed from Google Patents.
US3271668A
Expired / Lapsed
US
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Microwave measurement of surface attrition of a dielectric body
Assignee: Giannini Controls Corp
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Filing: 1962-08-23
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Granted: 1966-09-06
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Claus H Haake
- 👤 Samuel T Workman
- 👤 Donald L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:45
CPC Classifications
G; G01; G01N; G01N22/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
THE METHOD OF MEASURING THE RATE OF PROGRESSIVE ATTRITION FROM A SURFACE OF A BODY OF SOLID DIELECTRIC MATERIAL, SAID METHOD COMPRISING INJECTING ELECTROMAGNETIC RADIATION OF MICROWAVE FREQUENCY INTO THE BODY IN A DIRECTION TO BE INTERNALLY REFLECTED FROM THE SAID SURFACE, RECEIVING RADIATION REFLECTED FROM THE SURFACE, AND DETECTING THE VARIATIONS IN THE RELATIVE PHASE OF THE INJECTED AND REFLECTED RADIATION THAT RESULT FROM ATTRITION AT THE SURFACE.
Claim 2
Independent Claim
69 words
THE METHOD OF MEASURING THE RATE OF PROGRESSIVE ATTRITION FROM A SURFACE OF A BODY OF SOLID DIELECTRIC MATERIAL, SAID METHOD COMPRISING INJECTING ELECTROMAGNETIC RADIATION OF MICROWAVE FREQUENCY INTO THE BODY IN A DIRECTION TO BE INTERNALLY REFLECTED FROM THE SAID SURFACE, RECEIVING RADIATION REFLECTED FROM THE SURFACE, AND DETECTING THE VARIATIONS IN THE RELATIVE PHASE OF THE INJECTED AND REFLECTED RADIATION THAT RESULT FROM ATTRITION AT THE SURFACE.
Claim 3
Dependent Claim
102 words
A ROCKET TESTING SYSTEM, COMPRISING IN COMBINATION STRUCTURE FORMING A ROCKET COMBUSTION CHAMBER HAVING A WALL PORTION OF DIELECTRIC MATERIAL, A BODY OF SOLID PROPELLANT WITHIN THE CHAMBER OVERLYING THE WALL PORTION AND HAVING A FREE SURFACE OPPOSING THE WALL PORTION, MEANS FOR INITIATING COMBUSTION AT SAID SURFACE, MEANS FOR PROJECTING AN INCIDENT BEAM OF ELECTROMAGNETIC RADIATION OF MICROWAVE FREQUENCY THROUGH SAID WALL PORTION INTO THE BODY OF PROPELLANT IN A DIRECTION TO BE INTERNALLY REFLECTED FROM SAID SURFACE, AND MEANS FOR COMPARING THE PHASE OF THE INCIDENT AND REFLECTED RADIATION TO DETECT ATTRITION OF SAID SURFACE DURING COMBUSTION OF THE PROPELLANT.
Claim 4
Dependent Claim
102 words
A ROCKET TESTING SYSTEM, COMPRISING IN COMBINATION STRUCTURE FORMING A ROCKET COMBUSTION CHAMBER HAVING A WALL PORTION OF DIELECTRIC MATERIAL, A BODY OF SOLID PROPELLANT WITHIN THE CHAMBER OVERLYING THE WALL PORTION AND HAVING A FREE SURFACE OPPOSING THE WALL PORTION, MEANS FOR INITIATING COMBUSTION AT SAID SURFACE, MEANS FOR PROJECTING AN INCIDENT BEAM OF ELECTROMAGNETIC RADIATION OF MICROWAVE FREQUENCY THROUGH SAID WALL PORTION INTO THE BODY OF PROPELLANT IN A DIRECTION TO BE INTERNALLY REFLECTED FROM SAID SURFACE, AND MEANS FOR COMPARING THE PHASE OF THE INCIDENT AND REFLECTED RADIATION TO DETECT ATTRITION OF SAID SURFACE DURING COMBUSTION OF THE PROPELLANT.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |