USA As Represented by Secretary of the Navy

Leroy W Tucker

Jeffrey V Wilson

Alan T Inouye

William D Briggs

Lawrence W Hallanger

Floyd E Nelson

A ground fault detection and shutoff system for underwater power transmisn provides protection to divers from swimming into electric fields. This system uses DC power to monitor the true resistance of the load system rather than the AC power to the load. The system comprises DC power supply, ground fault monitor, circuit breaker and isolation transformer which monitors the system's DC resistance to ground and shuts off the power system if the resistance falls below a preset value.

Ground fault detector and shutdown system

In an underwater-mateable connector system of the vented pin-and-socket t, the socket electrical contact system is composed of a contact ring cooperating with a contact band, the contact band being integrally provided with a multiplicity of resiliently deformable louvers. The pin electrical contact is composed of a rigid conductor disposed intermediate electrically insulating material and is arranged to provide electrical contact with the deformable louvers of the contact band. Electrically insulating interference seals are formed on either side of the contact area when mated due to differential diameters between the pin and socket. The preferred embodiment utilizes a Multilam.RTM. band (U.S. Pat. No. 3,453,587) as the contact band.

Underwater-mateable electrical connector

A quick disconnect intercell busbar for providing an easily removable, inidually insulated bussing system for deep submergence batteries. A bussing conductor having silver plated copper pin terminations carries battery currents with a minimal voltage drop. The busbar is insulated to provide sealing of the battery electrical circuits thereby eliminating shorts caused by electrolyte contamination or seawater intrusion. A low current conductor connected to the bussing conductor with suitable insulation provides for monitoring of intercell voltages.

Quick disconnect intercell busbar for deep submergence batteries

A quick disconnect intercell busbar for providing an easily removable, inidually insulated bussing system for deep submergence batteries. A bussing conductor having silver plated copper pin terminations carries battery currents with a minimal voltage drop. The busbar is insulated to provide sealing of the battery electrical circuits thereby eliminating shorts caused by electrolyte contamination or seawater intrusion. A low current conductor connected to the bussing conductor with suitable insulation provides for monitoring of cell voltages.

A gas vent tube for removing gas from a container while minimizing loss of iquids. The vent is mounted in a cylindrical container on a 360.degree. rotating joint and has a buoyant material attached to always maintain the vent in an upright position. The pickup tube also has a buoyancy closure valve to prevent the loss of liquid when the end of the pickup tube is not in a gas, and may be provided with a check valve when the container is submerged in a second liquid to prevent the intrusion of the second liquid into the container.

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Camarillo, CA, United States of America

Leroy W Tucker