Patent US3699889A successfully refreshed from Google Patents.
US3699889A
Expired / Lapsed
US
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Coil configuration for an electromagnetic warhead influence firing system
Assignee: United States Department of the Navy
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Filing: 1971-04-27
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Granted: 1972-10-24
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Expires: 1991-04-27
Abstract
Abstract A coil configuration for a torpedo warhead exploder influence firing system for use against surface and submarine targets consists of an orthogonal coil configuration where the transmit coils are surface mounted on the warhead section of the torpedo, and two receiver coils are mounted perpendicular to each other, one vertical and the other horizontal to the torpedo axis. The transmit coils generate an electromagnetic field around the region of the torpedo which induces eddy currents in a nearby hull. The eddy currents in the hull then induce a voltage in the receiver coils, indicating the presence of a ship.
Inventors
- 👤 Armand Cioccio
- 👤 Gee-In Goo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:14
CPC Classifications
F; F42; F42B; F42B22/00; F42B22/04; F42C; F42C13/00; F42C13/08
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
53 words
A coil system for a torpedo electromagnetic influence firing system comprising: a plurality of transmitting coils mounted on a section of the torpedo for transmitting electromagnetic radiation; and a plurality of receiving coils mounted on said torpedo section for receiving electromagnetic radiation generated by a target in response to said transmitted electromagnetic radiation.
Claim 2
Dependent Claim
53 words
A coil system for a torpedo electromagnetic influence firing system comprising: a plurality of transmitting coils mounted on a section of the torpedo for transmitting electromagnetic radiation; and a plurality of receiving coils mounted on said torpedo section for receiving electromagnetic radiation generated by a target in response to said transmitted electromagnetic radiation.
Claim 3
Dependent Claim
52 words
The coil system of claim 1, wherein said plurality of transmitting coils comprise at least four parallelly connected bar coils mounted on the outer surface and symmetrically about the longitudinal axis of said torpedo, each of said transmitting coils being mounted in a recess on said outer surface of said torpedo section.
Claim 4
Dependent Claim
45 words
The coil system of claim 2, wherein said plurality of receiving coils comprise two bar coils connected in quadrature and mounted internally within said torpedo section, said bar coils being mounted substantially orthogonal to said transmitting coils and being mounted substantially orthogonal to each other.
Claim 5
Dependent Claim
43 words
The coil system of claim 2, wherein said receiving coils comprise two vase coils connected in quadrature and mounted internally within said torpedo section, said vase coils being mounted substantially orthogonal to said transmitting coils and being mounted substantially orthogonal to each other.
Claim 6
Dependent Claim
66 words
The coil system of claim 2, wherein said receiving coils comprise at least two pairs of bar coils mounted internally within said torpedo section, said pairs of bar coils being mounted substantially orthogonal to said transmitting coils and symmetrically arranged about the longitudinal axis of said torpedo, said coils in each pair being connected series opposing, and said pairs being connected to each other in quadrature.
Claim 7
Dependent Claim
71 words
The coil system of claim 2, wherein said receiving coils comprise at least two pairs of bar coils mounted on the torpedo section, said pairs of bar coils being mounted substantially orthogonal to said transmitting coils in recesses on said torpedo section, and symmetrically arranged about the longitudinal axis of said torpedo, said coils in each pair being connected series opposing, and said pairs being connected to each other in quadrature.
Claim 8
Dependent Claim
67 words
The coil system of claim 2, wherein said receiving coils comprise at least two pairs of flat wound spiral coils mounted externally on said torpedo section, said pairs of spiral coils being substantially orthogonal to said transmitting coils, and symmetrically arranged about the longitudinal axis of said torpedo, said coils in each pair being connected series opposing, and said pairs being connected to each other in quadrature.
Claim 9
Dependent Claim
52 words
A coil system for a torpedo electromagnetic influence firing system comprising: a plurality of transmitting coils mounted internally in a section of said torpedo for transmitting electromagnetic radiation; and a receiving coil mounted on said torpedo section for receiving electromagnetic radiation generated by a target in response to said transmitted electromagnetic radiatiOn.
Claim 10
Dependent Claim
52 words
A coil system for a torpedo electromagnetic influence firing system comprising: a plurality of transmitting coils mounted internally in a section of said torpedo for transmitting electromagnetic radiation; and a receiving coil mounted on said torpedo section for receiving electromagnetic radiation generated by a target in response to said transmitted electromagnetic radiatiOn.
Claim 11
Dependent Claim
51 words
The coil system of claim 8, wherein said plurality of transmitting coils comprise at least two pairs of square coils, said coils in each pair being connected in parallel, said pairs being connected in quadrature, and said pairs of square coils being mounted symmetrically about the longitudinal axis of said torpedo.
Claim 12
Dependent Claim
40 words
The coil system of claim 9, wherein said receiving coil comprises a square coil mounted internally within said torpedo section, said receiving coil being positioned substantially orthogonally to said transmitting coil and symmetrically to the longitudinal axis of said torpedo.
Claim 13
Dependent Claim
28 words
The coil system of claim 9, wherein said receiving coil comprises a coil wound externally around said torpedo section, substantially orthogonal to the longitudinal axis of said torpedo.
Claim 14
Dependent Claim
28 words
The coil system of claim 9, wherein said receiving coil comprises a bar coil mounted internally within said torpedo section substantially along the longitudinal axis of said torpedo.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |