Patent US3278922A successfully refreshed from Google Patents.
US3278922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position and motion detector
Assignee: General Electric Co
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Filing: 1963-11-14
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Granted: 1966-10-11
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Expires: 1983-11-14
Abstract
No abstract record available.
Inventors
- 👤 Charles L Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:16
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/22; G08B13/24; G08B13/2491
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN APPARATUS FOR DETECTING THE PRESENCE OF AN OBJECT COMPRISING A RECTANGULAR WAVEGUIDE CAVITY OPEN ON ONE SIDE THEREOF AND PROVIDED WITH A FLARED HORN FOR RADIATING ENERGY TOWARDS AN OBJECT, AN ELECTRON OSCILLATOR TUBE DISPOSED IN SAID CAVITY HAVING A GRID ELECTRODE, A CATHODE ELECTRODE, AN ANODE ELECTRODE AND AN ELECTRON BEAM EXTENDING THEREBETWEEN, SAID GRID ELECTRODE AND SAID CATHODE ELECTRODE DEFINING AN ELECTRODE GAP COUPLED TO SAID CAVITY, CONNECTION MEANS FOR COUPLING CURRENT TO ELECTRODES OF SAID ELECTRON TUBE, AND UTILIZATION MEANS ACTUATED BY THE CHANGE IN SAID CURRENT AS ENERGY REFLECTED TO SAID CAVITY BY AN OBJECT PRODUCES A STANDING WAVE EXTENDING INTO SAID CAVITY AND THE ELECTRODE GAP OF SAID ELECTRON TUBE AFFECTING THE ELECTRON BEAM TRAVERSING SAID ELECTRODE GAP TO CHANGE THE SAID CURRENT COUPLED TO SAID TUBE.
Claim 2
Independent Claim
133 words
AN APPARATUS FOR DETECTING THE PRESENCE OF AN OBJECT COMPRISING A RECTANGULAR WAVEGUIDE CAVITY OPEN ON ONE SIDE THEREOF AND PROVIDED WITH A FLARED HORN FOR RADIATING ENERGY TOWARDS AN OBJECT, AN ELECTRON OSCILLATOR TUBE DISPOSED IN SAID CAVITY HAVING A GRID ELECTRODE, A CATHODE ELECTRODE, AN ANODE ELECTRODE AND AN ELECTRON BEAM EXTENDING THEREBETWEEN, SAID GRID ELECTRODE AND SAID CATHODE ELECTRODE DEFINING AN ELECTRODE GAP COUPLED TO SAID CAVITY, CONNECTION MEANS FOR COUPLING CURRENT TO ELECTRODES OF SAID ELECTRON TUBE, AND UTILIZATION MEANS ACTUATED BY THE CHANGE IN SAID CURRENT AS ENERGY REFLECTED TO SAID CAVITY BY AN OBJECT PRODUCES A STANDING WAVE EXTENDING INTO SAID CAVITY AND THE ELECTRODE GAP OF SAID ELECTRON TUBE AFFECTING THE ELECTRON BEAM TRAVERSING SAID ELECTRODE GAP TO CHANGE THE SAID CURRENT COUPLED TO SAID TUBE.
References Cited (Backward Citations)
GB600701A
Cited
DE875819C
Cited
US2457997A
Cited
US2627577A
Cited
US2619597A
Cited
US2558463A
Cited
US2530905A
Cited
US2622140A
Cited
US2580155A
Cited
US2646559A
Cited
DE833901C
Cited
US2826753A
Cited
US3031626A
Cited
US3145251A
Cited
US3161876A
Cited
US3122601A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |