Patent US3255984A successfully refreshed from Google Patents.
US3255984A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beam riding guidance system
Assignee: Lockheed Martin Corp
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Filing: 1963-06-13
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Granted: 1966-06-14
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Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Russell B Hawes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:35
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
A METHOD FOR PROVIDING A GUIDANCE SIGNAL INDICATING THE POSITION OF A VEHICLE WITH RESPECT TO THE CENTRAL AXIS OF A CONICALLY SWEPT RADIATION PATTERN ALONG WHICH THE VEHICLE IS TRAVELLING, SAID METHOD COMPRISING STEPS OF (A) SENSING ENERGY IN SAID PATTERN AT TWO PLACES SPACED APART ON SAID VEHICLE IN A DIRECTION TRANSVERSE TO SAID AXIS, (B) DEVELOPING IN RESPONSE TO THE ENERGY SENSED IN EACH PLACE A MODULATION SIGNAL WHOSE FREQUENCY IS EQUAL TO THE SWEEP RATE OF THE ENERGY IN SAID PATTERN, (C) ADDING AND SUBTRACTING SAID MODULATION SIGNALS TO PROVIDE SUM AND DIFFERENCE SIGNALS, AND (D) DEVELOPING SIGNALS INDICATIVE TO THE RELATIVE PHASE OF SAID SUM AND DIFFERENCE SIGNALS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |