US3657652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inter-compartment coupling device
Assignee: MACKAY COMMUNICATIONS Inc CELWAVE SYSTEMS Inc PO BOX 39 CLARMONT NC 28610-0039 A CORP OF
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Filing: 1969-12-17
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Granted: 1972-04-18
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Expires: 1989-12-17
Abstract
Abstract Inter-compartment coupling devices are described for improving on-board communications for large ships. The described devices permit efficient electrical coupling between compartments so that communications by hand-held transceivers is possible. The couplers described include a slot antenna, loop and monopole antennas which interconnect the various areas on either side of a partition or deck.
Inventors
- 👤 Harry R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:55
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/34; H01Q15/00; H01Q15/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
60 words
An inter-compartment coupling device for improving two-way on-board communications between compartments of a ship comprising a mono-pole antenna and means locating the antenna within a partition between compartments so as to provide efficient electrical coupling between the compartments, and the length of the antenna radiator projecting into each compartment is onequarter of a wave length at the frequency of operation.
Claim 2
Dependent Claim
60 words
An inter-compartment coupling device for improving two-way on-board communications between compartments of a ship comprising a mono-pole antenna and means locating the antenna within a partition between compartments so as to provide efficient electrical coupling between the compartments, and the length of the antenna radiator projecting into each compartment is onequarter of a wave length at the frequency of operation.
Claim 3
Dependent Claim
59 words
An inter-compartment coupling device for improving two-way on-board communications between compartments of a ship comprising a loop antenna, one loop on either side of a partition separating the compartments and conductively connected together, means locating and fixing the antenna to said partition, and said antenna having an overall length one-half of a wave length at the frequency of operation.
Claim 4
Dependent Claim
59 words
An inter-compartment coupling device for improving two-way on-board communications between compartments of a ship comprising a loop antenna, one loop on either side of a partition separating the compartments and conductively connected together, means locating and fixing the antenna to said partition, and said antenna having an overall length one-half of a wave length at the frequency of operation.
Claim 5
Dependent Claim
37 words
The coupler according to Claim 2 wherein the means for locating and fixing said antenna in the partition includes a threaded support member and nut, the threaded support having a solid insulation portion and a metallic portion.
Claim 6
Dependent Claim
59 words
The coupler according to claim 3 wherein the ends of the loop antenna are electrically connected to the metallic portion of said support member whereby, when a radio field on one side of the partition introduces currents in the loop to cause radiation on the other side of the partition, the coupling is accomplished in a spark free manner.
Claim 7
Dependent Claim
59 words
Means for improving two-way on-board communications from one part of a ship to another comprising: transceiver means for communicating between compartments separated by at least one partition; and mono-pole antenna means positioned within the partition and extending on both sides of the partition for improving two-way communications of said transceiver means by introducing efficient electrical coupling between the compartments.
Claim 8
Dependent Claim
59 words
Means for improving two-way on-board communications from one part of a ship to another comprising: transceiver means for communicating between compartments separated by at least one partition; and mono-pole antenna means positioned within the partition and extending on both sides of the partition for improving two-way communications of said transceiver means by introducing efficient electrical coupling between the compartments.
Claim 9
Dependent Claim
59 words
Means for improving two-way on-board communications from one part of a ship to another comprising: transceiver means for communicating between compartments separated by at least one partition; and loop antenna means positioned within the partition and extending on both sides of the partition for improving two-way communications of said transceiver means by introducing efficient electrical coupling between the compartments.
Claim 10
Dependent Claim
59 words
Means for improving two-way on-board communications from one part of a ship to another comprising: transceiver means for communicating between compartments separated by at least one partition; and loop antenna means positioned within the partition and extending on both sides of the partition for improving two-way communications of said transceiver means by introducing efficient electrical coupling between the compartments.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |