US3965472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Off-resonant chaff system for a large target viewed by low frequency radar
Assignee: CONSTANT ARGEREY 1603 DANBURY DRIVE CLAREMONT CA 91711
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Filing: 1974-04-10
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Granted: 1976-06-22
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Expires: 1994-04-10
Abstract
Abstract A system for concealing radar targets. A chaff system with low deadweight ratio, low chaff birdnesting, lossless wire performance, low vulnerability and high dispensing reliability. A chaff system for masking large size targets viewed at low radar frequencies.
Inventors
- 👤 James Nickolas Constant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:39
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/145
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A method for masking large targets viewed by radar operating at VHF or lower frequency comprising dropping a plurality of separable electric conductors of a length forming dipoles resonating at a frequency substantially above the frequency of the radar, and having a length-to-diameter ratio not substantially more than 3000 providing substantially rigid conductors, and having a diameter not substantially less than one thousandth of an inch providing low ohmic losses.
Claim 2
Independent Claim
70 words
A method for masking large targets viewed by radar operating at VHF or lower frequency comprising dropping a plurality of separable electric conductors of a length forming dipoles resonating at a frequency substantially above the frequency of the radar, and having a length-to-diameter ratio not substantially more than 3000 providing substantially rigid conductors, and having a diameter not substantially less than one thousandth of an inch providing low ohmic losses.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1 wherein said conductors have a uniform length.
Claim 4
Dependent Claim
23 words
A method as defined in claim 1 wherein said conductors are about 20 inches long and about six thousandths of an inch diameter.
Claim 5
Dependent Claim
19 words
A method as defined in claim 1 wherein the resonating frequency of said dipoles is in the UHF band.
References Cited (Backward Citations)
US3500409A
Cited
US3221875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |