Submarine object locater

Claim 1

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal, means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, and an underwater detecting unit for said sonic control signal, said underwater detecting unit depending from a navigable craft.

Claim 2

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal, means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, and an underwater detecting unit for said sonic control signal, said underwater detecting unit depending from a navigable craft.

Claim 3

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in A body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal, means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, and further means responsive to a predetermined underwater sonic control signal for de-activating said sonic transmitter.

Claim 4

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in A body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal, means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, and further means responsive to a predetermined underwater sonic control signal for de-activating said sonic transmitter.

Claim 5

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in response to said sonic control signed to close said contacts, and a locking circuit for said relay powered from said power source.

Claim 6

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in response to said sonic control signed to close said contacts, and a locking circuit for said relay powered from said power source.

Claim 7

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in responsive to said sonic control signal to close said contacts, and a locking circuit for said relay powered from said power source; said underwater detector including a sonic signature selector normally operative and capable of being rendered selectively operative and inoperative, and means responsive to energization of said relay for rendering said sonic signature selector inoperative during such energization.

Claim 8

A system for detecting a mine comprising a buoyant underwater detector, a casing for said detector, means anchoring said detector at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in said casing, said detector including means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in responsive to said sonic control signal to close said contacts, and a locking circuit for said relay powered from said power source; said underwater detector including a sonic signature selector normally operative and capable of being rendered selectively operative and inoperative, and means responsive to energization of said relay for rendering said sonic signature selector inoperative during such energization.

Claim 9

A system for detecting a mine comprising a plurality of buoyant underwater detectors, a casing for each of said detectors, means anchoring each of said detectors at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in each of said casings, said detectors including each means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in response to said sonic control signal to close said contacts, and a locking circuit for said relay powered from said power source.

Claim 10

A system for detecting a mine comprising a plurality of buoyant underwater detectors, a casing for each of said detectors, means anchoring each of said detectors at a predetermined level and location in a body of water, a normally de-energized underwater sonic transmitter in each of said casings, said detectors including each means responsive only to the sonic signature of a mine produced by passage of the mine into and through a body of water for producing a sonic control signal; and means responsive to said sonic control signal for energizing said normally de-energized sonic transmitter, said latter responsive means including a normally de-energized relay, normally open contacts for said relay, a source of electric power, means for completing a circuit for said sonic transmitter from said power source via said contacts, said relay energized in response to said sonic control signal to close said contacts, and a locking circuit for said relay powered from said power source.