Patent US4354455A successfully refreshed from Google Patents.
US3166015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio frequency proximity fuze
Assignee: Individual
•
Filing: 1943-01-06
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Granted: 1965-01-19
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Expires: 1963-01-06
Abstract
No abstract record available.
Inventors
- 👤 Merle A Tuve
- 👤 Richard B Roberts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:57
CPC Classifications
F; F42; F42C; F42C13/00; F42C13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROJECTILE CONTAINING AN EXPLOSIVE CHARGE, A PROXIMITY FUZE COMPRISING AN OSCILLATOR HAVING AN ANTENNA, AN ELECTRICALLY OPERABLE DETONATOR FOR EXPLODING SAID CHARGE, AN AMPLIFIER TUBE THROUGH WHICH THE OSCILLATOR IS COUPLED TO THE DETONATOR AND THROUGH WHICH THE DETONATOR IS OPERATED IN RESPONSE TO A CHANGE IN THE LOADING OF THE OSCILLATOR BY REFLECTION OF MAGNETIC WAVES EMITTED THEREFROM, AND MEANS FOR BIASING THE GRID OF SAID TUBE PROGRESSIVELY LESS NEGATIVELY DURING FLIGHT OF THE PROJECTILE.
Claim 2
Dependent Claim
48 words
IN AN EXPLOSIVE PROJECTILE, A PROXIMITY FUZE COMPRISING AN ANTENNA, AN OSCILLATOR COUPLED TO THE ANTENNA AND NORMALLY LOADED TO NON-OSCILLATING CONDITION AND BECOMING OPERATIVE UPON A CHANGE IN THE RADIATION IMPEDANCE OF THE ANTENNA, AND MEANS COUPLED TO THE OSCILLATOR AND OPERABLE THEREBY TO EXPLODE THE PROJECTICLE.
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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) | 1968-01-19 | 1968-07-20 | 1969-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-19 | 1972-07-20 | 1973-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-19 | 1976-07-20 | 1977-01-19 | $7700.00 | Window Closed / Lapsed |