US2735981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave interferometer
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:45
CPC Classifications
G; G01; G01P; G01P3/00; G01P3/64; G01P3/66; G01P3/665; F; F41; F41G; F41G3/00; F41G3/12; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/583
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
APPARATUS FOR DETERMINING THE INSTANTANEOUS POSITION OF PROJECTILE WITHIN A GUN BARREL COMPRISING MEANS FOR GENERATING ELECTROMAGNETIC ENERGY HAVING A HALF WAVE LENGTH SUBSTANTIALLY SHORTER THAN THE INTERNAL DIAMETER OF SUCH BARREL, RADIO-FREQUENCY DETECTOR MEANS, AND MEANS ELECTRICALLY CONNECTING SAID GENERATOR AND SAID DETECTOR FOR TRANSMITTING ENERGY FROM SAID GENERATOR TO SAID DETECTOR ALONG TWO DIFFERENT PATHS, ONE OF SAID PATHS INCLUDING A TRANSMISSION LINE CONNECTED TO SAID GENERATOR AND ELECTROMAGNETICALLY COUPLED TO BUT PHYSICALLY SEPARATED FROM SAID GUN BARREL WHEREBY THAT PORTION OF THE ENERGY TRAVELLING ALONG SAID LINE FROM SAID GENERATOR WILL BE COUPLED INTO AND TRAVEL DOWN SAID BARREL AND BE REFLECTED FROM THE PROJECTILE THEREIN AND RECOUPLED INTO SAID LINE, SAID DETECTOR MEANS BEING ADAPTED TO PRODUCE AN OUTPUT VOLTAGE CORRESPONDING TO THE VECTOR SUM OF THE INDIVIDUAL RADIO-FREQUENCY VOLTAGES OF THE ENERGY ARRIVING AT SAID DETECTOR MEANS ALONG SAID TWO PATHS, AND MEANS CONNECTED TO SAID DETECTOR FOR INDICATING SAID OUTPUT VOLTAGE.
Claim 2
Dependent Claim
157 words
APPARATUS FOR DETERMINING THE INSTANTANEOUS POSITION OF PROJECTILE WITHIN A GUN BARREL COMPRISING MEANS FOR GENERATING ELECTROMAGNETIC ENERGY HAVING A HALF WAVE LENGTH SUBSTANTIALLY SHORTER THAN THE INTERNAL DIAMETER OF SUCH BARREL, RADIO-FREQUENCY DETECTOR MEANS, AND MEANS ELECTRICALLY CONNECTING SAID GENERATOR AND SAID DETECTOR FOR TRANSMITTING ENERGY FROM SAID GENERATOR TO SAID DETECTOR ALONG TWO DIFFERENT PATHS, ONE OF SAID PATHS INCLUDING A TRANSMISSION LINE CONNECTED TO SAID GENERATOR AND ELECTROMAGNETICALLY COUPLED TO BUT PHYSICALLY SEPARATED FROM SAID GUN BARREL WHEREBY THAT PORTION OF THE ENERGY TRAVELLING ALONG SAID LINE FROM SAID GENERATOR WILL BE COUPLED INTO AND TRAVEL DOWN SAID BARREL AND BE REFLECTED FROM THE PROJECTILE THEREIN AND RECOUPLED INTO SAID LINE, SAID DETECTOR MEANS BEING ADAPTED TO PRODUCE AN OUTPUT VOLTAGE CORRESPONDING TO THE VECTOR SUM OF THE INDIVIDUAL RADIO-FREQUENCY VOLTAGES OF THE ENERGY ARRIVING AT SAID DETECTOR MEANS ALONG SAID TWO PATHS, AND MEANS CONNECTED TO SAID DETECTOR FOR INDICATING SAID OUTPUT VOLTAGE.
References Cited (Backward Citations)
US2691761A
Cited
US2596531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |