Patent US3201973A successfully refreshed from Google Patents.
US3201973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant burning rate detector
Assignee: Individual
•
Filing: 1962-12-14
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Granted: 1965-08-24
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Expires: 1982-12-14
Abstract
No abstract record available.
Inventors
- 👤 John E Fitzgerald
- 👤 Norman C Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:05
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/96; G; G01; G01N; G01N33/00; G01N33/22; G01N33/222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A SOLID PROPELLANT BURNING RATE DETECTOR COMPRISING IN COMBINATION: A ROCKET MOTOR; A PROPELLANT GRAIN WITHIN SAID MOTOR; AN ARRAY OF LIGHT ENERGY TRANSMITTING RODS OF UNEQUAL LENGTH LINEARLY ALINGNED WITHIN SAID GRAIN; AND AN ARRAY OF PHOTOVOLTAIC CELLS ARRANGED OPPOSITE THE BASE OF EACH ROD AND ADAPTED TO BE CONNECTED TO A RECORDING MEANS; WHEREBY LIGHT ENERGY CREATED DUR-
Claim 2
Dependent Claim
60 words
A SOLID PROPELLANT BURNING RATE DETECTOR COMPRISING IN COMBINATION: A ROCKET MOTOR; A PROPELLANT GRAIN WITHIN SAID MOTOR; AN ARRAY OF LIGHT ENERGY TRANSMITTING RODS OF UNEQUAL LENGTH LINEARLY ALINGNED WITHIN SAID GRAIN; AND AN ARRAY OF PHOTOVOLTAIC CELLS ARRANGED OPPOSITE THE BASE OF EACH ROD AND ADAPTED TO BE CONNECTED TO A RECORDING MEANS; WHEREBY LIGHT ENERGY CREATED DUR-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |