Expendable submarine receiving antenna

Claim 2

An expendable radio communication antenna for use by a submarine submerged at a depth at which its permanent antenna installation is ineffective, comprising a buoyant capsule, having an opening extending between the interior and exterior of the capsule, for release from an ejection chamber of the submarine, a coil of lead-in wire confined within said capsule and having electrical insulation suitable for use in sea water, and being of sufficient length to extend between said submerged submarine and the surface, a free end of said wire extending freely through said opening in said capsule for withdrawal and severance of a selected length of said wire and for connection at the free end to radio communication equipment aboard said submarine, and secured at its other end to said capsule, said coil being of the type whereby the wire pays out freely from said capsule by spiraling off said coil when a tensile force equal to the buoyancy of said capsule is applied between said coil and said free end of the wire, whereby said expendable antenna including a selected length of lead-in wire may be disposed in said ejection chamber of the submerged site with the free end of the lead-in wire electrically coupled to said radio communication equipment and released to buoyantly rise to the surface and whereby said antenna may be disposed of by severing the lead in wire at the submarine.

Claim 3

An expendable receiving antenna for use by a submarine vessel or submarine installation having an ejection means and located submerged at a depth where an antenna installation that may be carried thereby is not effective comprising a buoyant capsule having a chamber and an opening extending between the chamber and the exterior of the capsule, for release through said ejection means, a compact package of thin conductor wire coated by electrical insulation impervious to sea water and of sufficient length to extend between the submerged submarine and approximately the water surface, confined within said chamber and secured at one end of said capsule and having a free end extending freely through said opening in said capsule for withdrawal and severance of a selected length of said wire prior to use, and for connection to a radio communication equipment aboard sAid submarine, said compact package of wire being of the type that pays out the wire from said capsule while substantially stationary relative to said capsule when said capsule rises buoyantly to establish a radio communication link between the submarine and the overlaying atmosphere.

Claim 4

An expendable receiving antenna for use by a submarine vessel or submarine installation having an ejection means and located submerged at a depth where an antenna installation that may be carried thereby is not effective comprising a buoyant capsule having a chamber and an opening extending between the chamber and the exterior of the capsule, for release through said ejection means, a compact package of thin conductor wire coated by electrical insulation impervious to sea water and of sufficient length to extend between the submerged submarine and approximately the water surface, confined within said chamber and secured at one end of said capsule and having a free end extending freely through said opening in said capsule for withdrawal and severance of a selected length of said wire prior to use, and for connection to a radio communication equipment aboard sAid submarine, said compact package of wire being of the type that pays out the wire from said capsule while substantially stationary relative to said capsule when said capsule rises buoyantly to establish a radio communication link between the submarine and the overlaying atmosphere.

Claim 5

An expendable antenna for use by a submarine when submerged under conditions wherein its permanent antenna installation is ineffective, comprising a buoyant capsule having a chamber and an opening extending between the chamber and the exterior of the capsule for release from an ejection means of the submarine, a compact package of thin antenna lead-in wire of sufficient length to extend between said submarine when submerged at a selected depth and the sea surface approximately, said lead-in wire being coated by electrical insulation impervious to sea water and confined within the chamber and secured at one end to said capsule and having a free end extending freely through said opening in said capsule for withdrawal and severance of a selected length of said wire and for electrical connection to a radio communication apparatus aboard said submarine, said compact package of wire being of the type that pays out the wire readily from said capsule without movement of said package of wire relative to said capsule when a tensile force equal to the buoyancy of said capsule in sea water is applied between the wire package and the free end, a length of insulated antenna wire carried in compact form by said capsule, means carried by said capsule operable for extending said antenna wire from said capsule approximately at the sea surface after the capsule is released from the submerged submarine and is buoyed to the surface, whereby said capsule may be disposed in an ejection chamber of said submarine and the lead-in wire connected through a pressure proof seal on a wall portion of the ejection chamber to said communication apparatus and the capsule ejected from said ejection chamber to buoyantly rise to the surface while continuously paying out said lead-in wire and upon reaching the surface region said antenna wire is extended from said capsule.

Claim 6

An expendable antenna for use by a submarine when submerged under conditions wherein its permanent antenna installation is ineffective, comprising a buoyant capsule having a chamber and an opening extending between the chamber and the exterior of the capsule for release from an ejection means of the submarine, a compact package of thin antenna lead-in wire of sufficient length to extend between said submarine when submerged at a selected depth and the sea surface approximately, said lead-in wire being coated by electrical insulation impervious to sea water and confined within the chamber and secured at one end to said capsule and having a free end extending freely through said opening in said capsule for withdrawal and severance of a selected length of said wire and for electrical connection to a radio communication apparatus aboard said submarine, said compact package of wire being of the type that pays out the wire readily from said capsule without movement of said package of wire relative to said capsule when a tensile force equal to the buoyancy of said capsule in sea water is applied between the wire package and the free end, a length of insulated antenna wire carried in compact form by said capsule, means carried by said capsule operable for extending said antenna wire from said capsule approximately at the sea surface after the capsule is released from the submerged submarine and is buoyed to the surface, whereby said capsule may be disposed in an ejection chamber of said submarine and the lead-in wire connected through a pressure proof seal on a wall portion of the ejection chamber to said communication apparatus and the capsule ejected from said ejection chamber to buoyantly rise to the surface while continuously paying out said lead-in wire and upon reaching the surface region said antenna wire is extended from said capsule.

Claim 7

An expendable radio antenna for use with a radio communication apparatus while the latter is deeply submerged in water at a depth which makes impractical direct signal transfer between said apparatus and the overlaying atmosphere which comprises a compact package of insulated wire conductor for electrical coupling at one end to said apparatus and of a length approximately to extend from said submerged apparatus to the surface of the water said package of wire being of the type that pays out upon application of tensile force between its ends, and means physically connected to the other end of said conductor and carrying the compact wire packaged in substantially stationary relationship relative thereto and selectively operable to rise in the water and tow said other end of said conductor upwardly with sufficient force to progressively pay out the conductor and change it from its compact condition to extended condition and to support said other end approximately at the surface at least temporarily.

Claim 8

An expendable radio antenna for use with a radio communication apparatus while the latter is deeply submerged in water at a depth which makes impractical direct signal transfer between said apparatus and the overlaying atmosphere which comprises a compact package of insulated wire conductor for electrical coupling at one end to said apparatus and of a length approximately to extend from said submerged apparatus to the surface of the water said package of wire being of the type that pays out upon application of tensile force between its ends, and means physically connected to the other end of said conductor and carrying the compact wire packaged in substantially stationary relationship relative thereto and selectively operable to rise in the water and tow said other end of said conductor upwardly with sufficient force to progressively pay out the conductor and change it from its compact condition to extended condition and to support said other end approximately at the surface at least temporarily.

Claim 9

An expendable antenna as defined in claim 4 further including an adhesive on said wire to normally retain said wire in said compact condition and operable to permit the wire to pay out progressively upon application of tensile force between its ends.

Claim 10

An expendable antenna for use with radio communication apparatus located beneath the surface of the sea which comprises a compactly arranged flexible elongate gas-tight bag, a first insulated wire conductor arranged compactly within said bag to extend when said bag is extended, a gas supply for filling and extending said bag, time delay means for activating said gas supply a predetermined time after actuation of said time delay means, a second insulated wire conductor arranged compactly whereby one end may be progressively payed out and extended upon application of tensile force between said one end and the compactly arranged conductor, the other end of said second conductor electrically connected to said first conductor, buoyant means carrying said conductors, bag, gas supply and time delay means and operable to rise in the sea water therewith when the one end of said second conductor is retained and the buoyant means is released and operable to release said gas bag when charged with gas by said gas supply means, whereby if said second conductor is of sufficient length to extend from said radio communication apparatus to the surface, and said delay means is operable to actuate said gas supply in a time interval in excess of the time for the buoyant means to reach the surface, said bag and said first conductor is extended at the surface after actuation of said time delay means and release of said buoyant means.

Claim 11

An expendable antenna for use with radio communication apparatus located beneath the surface of the sea which comprises a compactly arranged flexible elongate gas-tight bag, a first insulated wire conductor arranged compactly within said bag to extend when said bag is extended, a gas supply for filling and extending said bag, time delay means for activating said gas supply a predetermined time after actuation of said time delay means, a second insulated wire conductor arranged compactly whereby one end may be progressively payed out and extended upon application of tensile force between said one end and the compactly arranged conductor, the other end of said second conductor electrically connected to said first conductor, buoyant means carrying said conductors, bag, gas supply and time delay means and operable to rise in the sea water therewith when the one end of said second conductor is retained and the buoyant means is released and operable to release said gas bag when charged with gas by said gas supply means, whereby if said second conductor is of sufficient length to extend from said radio communication apparatus to the surface, and said delay means is operable to actuate said gas supply in a time interval in excess of the time for the buoyant means to reach the surface, said bag and said first conductor is extended at the surface after actuation of said time delay means and release of said buoyant means.