US4088998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for detecting nuclear explosions
Assignee: Westinghouse Electric Corp
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Filing: 1960-12-22
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Granted: 1978-05-09
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Expires: 1980-12-22
Abstract
Abstract 1. Apparatus for detecting underground nuclear explosions comprising antenna means located in the dielectric substance of a deep waveguide in the earth and adapted to detect low frequency electromagnetic waves generated by a nuclear explosion, said deep waveguide comprising the high conductivity upper sedimentary layers of the earth, the dielectric basement rock, and a high conductivity layer of basement rock due to the increased temperature thereof at great depths, and means for receiving the electromagnetic waves detected by said antenna means.
Inventors
- 👤 Lucien E. Rawls
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:07
CPC Classifications
H; H04; H04B; H04B13/00; H04B13/02; G; G01; G01S; G01S11/00; G01S11/02; G01S5/00; G01S5/02; G01S5/06; G01V; G01V3/00; G01V3/12; H01; H01Q; H01Q1/00; H01Q1/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
Apparatus for detecting underground nuclear explosions comprising antenna means located in the dielectric substance of a deep waveguide in the earth and adapted to detect low frequency electromagnetic waves generated by a nuclear explosion, said deep waveguide comprising the high conductivity upper sedimentary layers of the earth, the dielectric basement rock, and a high conductivity layer of basement rock due to the increased temperature thereof at great depths, and means for receiving the electromagnetic waves detected by said antenna means.
Claim 2
Dependent Claim
80 words
Apparatus for detecting underground nuclear explosions comprising antenna means located in the dielectric substance of a deep waveguide in the earth and adapted to detect low frequency electromagnetic waves generated by a nuclear explosion, said deep waveguide comprising the high conductivity upper sedimentary layers of the earth, the dielectric basement rock, and a high conductivity layer of basement rock due to the increased temperature thereof at great depths, and means for receiving the electromagnetic waves detected by said antenna means.
Claim 3
Dependent Claim
48 words
Apparatus for detecting underground nuclear explosions according to claim 1, including additional antenna means for detecting said electromagnetic waves in close proximity to the earth's surface, whereby the signals received by both of said antenna means may be compared to determine the character and location of said explosion.
Claim 4
Dependent Claim
39 words
Apparatus for detecting underground nuclear explosions according to claim 2, wherein one of said antenna means is adapted to receive vertically polarized electromagnetic waves, and the other of said antenna means is adapted to receive horizontally polarized electromagnetic waves.
Claim 5
Dependent Claim
98 words
Apparatus for detecting underground nuclear explosions, comprising a plurality of monitoring stations and a central station, each of said monitoring stations including an antenna extending into the basement rock of a deep waveguide in the earth, said waveguide comprising the high conductivity sedimentary layers of the earth, the dielectric basement rock, and the high conductivity basement rock due to the increased temperature at significant depths, and means for transmitting the signals received at said monitoring stations to said central station whereby said signals may be compared to determine the direction and location at which a nuclear explosion occurred.
Claim 6
Dependent Claim
98 words
Apparatus for detecting underground nuclear explosions, comprising a plurality of monitoring stations and a central station, each of said monitoring stations including an antenna extending into the basement rock of a deep waveguide in the earth, said waveguide comprising the high conductivity sedimentary layers of the earth, the dielectric basement rock, and the high conductivity basement rock due to the increased temperature at significant depths, and means for transmitting the signals received at said monitoring stations to said central station whereby said signals may be compared to determine the direction and location at which a nuclear explosion occurred.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-08 | 1981-11-07 | 1982-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-08 | 1985-11-07 | 1986-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-08 | 1989-11-07 | 1990-05-09 | $7700.00 | Window Closed / Lapsed |