Abstract: The invention consists of an electromagnetic-field pump. Electrolyte which is an electromagnetic conductor can be stirred and pumped by forcing a field through the electrolyte to magnetically charge the electrolyte and making use of magnetic force exerted on the charged electrolyte by a magnetic field to move the electrolyte. There are no moving parts in the device, only the changing magnetic fields. The magnetic pump assembly is submerged in an electrolyte and consists of an open ended tubular nonmagnetic chamber through which the electrolyte is forced to move in response to changing magnetic fields from external coils which are positioned about the exterior of the tubular chamber and operated to sequentially change in phase.

Abstract: A torsion spring longitudinally rotates a locking bolt when the bolt actung linkage is severed. A woodruff key or the like is upstanding from a surface of the bolt. When the linkage is undamaged, the key slides with the bolt through a slot on the lock frame. When the bolt is rotated by the spring, it is locked in the rotated position by a locking pawl. In the rotated position, the key is out of registry with the slot and the bolt cannot be withdrawn from its extended, locking position. A second embodiment replaces the key with a recess in the bolt into which a locking pawl engages to prevent movement of the locking bolt.

Abstract: An improved system for operating a lifting cable over the side of a ship at ea in which a spar buoy having an adjustable lifting capacity is coupled to the ship by a rigid linkage which is free to pivot on an axis attached to the ship deck, and operates to decouple the motion of the ship from the lifting cable. The spar buoy is attached to a gimbal sheave assembly having a disengageable connector and tension line for drawing the connector into engagement with a mating socket at the outward end of a linkage boom. A narrow upper section of the spar buoy is provided with a plurality of vertical tubes and valves which by flooding or evacuating operate to vary the effective water plane area of the buoy for continual fine tuning and optimally adjusting of its natural heave mode characteristic frequency.

Abstract: Inductive coupling of a high-frequency signal into a cable to be detected d tracked in a seawater medium for sensing the relative position of the cable with respect to capacitor plates. The capacitor plates are positioned so that in conjunction with the cable a differential capacitor is formed. Relative movement of the capacitor plates with respect to the position of the cable is used to unbalance a Wheatstone Bridge circuit. The output signal from the bridge circuit is proportional to their displacement and is used to provide a guidance signal to realign the capacitor plates and the cable.

Abstract: A load lowering hook is equipped with a spring biased load holding member ich ejects and disengages the load rigging when the load touches down and the majority of the weight is released. The spring loaded member can be adjusted to disengage the load at a preset weight depending upon the weight of the rigging that will still be pulling on the hook after the load touches down.

Abstract: A means for taking roller paths inclination data as part of a weapon system lignment sequence. An accelerometer sensor sends out a DC signal representative of tilt. This signal is amplified and fed to a difference amplifier where a reference signal from a similar channel is subtracted. The difference signal is filtered to remove ship's motion and sent to a scaler circuit for providing an output voltage representing the inclination difference between the two sensors.

Abstract: The automatic vacuum recyclable system for chemically-thermo cleaning tanks nd bilges primarily comprises a makeup, storage and heating unit, a pressure pumping and spraying unit, a vacuum and separation unit, and a filtration unit. The system functions to clean tanks and bilges without the need for a work crew to be inside during actual surface cleaning operations.

Abstract: A radar reflective target consisting of a cluster of square corner reflecs configured in a cubical shape. The reflector is comprised of eight smaller blocks of lightweight radar-transparent material, such as plastic foam, with planar reflective surfaces, such as metal foil embedded between the interior faces of the individual blocks. A radar-transparent waterproof covering can be provided to protect the assembled unit.

Abstract: A portable infrared spectrophotometer for nondestructive testing of coatings, plastics, rubber and other organic construction materials. A single source of infrared light is formed into two beams. One beam is directed to the surface of a sample where it is reflected off the surface of the sample at least four times. The other beam follows a similar path but bounces off a neutral surface. The two beams are combined and focused onto a detector. The output of the detector is proportional to the energy absorbed by the surface of the test sample. A pen recorder is used to provide a graphic display of the spectrum generated.

Abstract: An improvement for a ring laser gyro employs insertion of a wavefront conjugating coupling element inside a laser cavity to reduce the lock-in threshold and to reduce the imbalance between the amplitudes of the opposite direction traveling waves (ODTW) in homogeneously broadened rotating ring lasers.

Abstract: The scour jet array system includes a pump, both fresh water and surface er intakes, an automatic water mixing valve, a chemical buffer injector, a water heater, a series of scour jets with control valves, and a central control system.The control system senses the beginning of ebb tide for starting an initial scour jet, and as each jet scours the freshly deposited mud from the area, temperature, salinity and pH of the surface suction intake water are measured to determine the amount of fresh water injection, chemical buffer injection, water heating and duty cycle time in order to minimize the energy required to scour the sediments from the area.

Abstract: A frangible fly through diaphragm for missile launcher tubes consists of epoxy and fiberglass plies with each ply being scored in predetermined patterns. The plies are bonded together and a Mylar/aluminum ply can be located on the missile side to provide gas sealing and electromagnetic interference protection. A segmented foam rubber outer layer can also be provided for additional protection from missile jet plumes.

Abstract: The invention is a device for splicing submarine coaxial cable underwater the seafloor with a simple push-on operation to restore and maintain electrical and mechanical strength integrity; the splice device is mateable directly with the severed ends of a coaxial cable to be repaired. Splicing assemblies comprise a dielectric pressure compensating fluid filled guide cavity, a gelled castor oil cap and wiping seals for exclusion of seawater, electrical contacts, a cable strength restoration mechanism, and a pressure compensation system for controlled extrusion of and depletion loss prevention of dielectric seal fluid during cable splicing. A splice is made underwater by directly inserting prepared ends of coaxial cable, having no connector attachments, into splicing assemblies.

Abstract: The single zone lighting controller controls the lights in a zone or area integrating external control signals for daylighting and occupancy with a local override function. The daylighting signal is from a master photoelectric control, and occupancy signal is from a time-clock or electronic occupancy sensor; the local override, activated by an occupant provides a fixed override period before the single zone lighting controlled again responds to the external control signals. Shortly before the override period is over, the single zone lighting controller warns the occupant, e.g., by blinking the lights that the override is about to end.

Abstract: An adapter for use with lift forks or the like of a lift truck to allow v accurate positioning of ordnance and the like for attachment to aircraft. The adapter comprises a base which is supported or secured to the lift forks and includes an ordnance load carrying cradle carried on a trolley mechanism that allows degrees of freedom in the fore/aft and lateral directions.

Abstract: The device uses a grounding ring, having both an outer and an inner ring element combination, which is placed about a shielded cable to be grounded. The inner ring has a multitude of grounding spikes cammed to move in a radially inward direction in response to rotation of the outer ring and pierce any outer insulation and the metal shielding sufficiently to make good electrical contact with the cable shielding about its circumference.

Abstract: Various means for providing rigidity to the flexible hose of a water jet iment probe that is used to determine thickness and types of underlying sediment beneath land or seafloor is disclosed. A series of interconnecting rods or pipe sections are used to stiffen a length of flexible hose to a desired probe depth to enable a single operator to bore a hole of indefinite depth without assistance.

Abstract: The invention is for a submarine pipe laying device which is mounted to pt on two axes on a pipeline laying vessel and which allows for mating and deploying sections of the pipe in a string. A cradle is used to hold a length of pipe and a clamp holds the end of the last deployed section of pipe while a torque box unit attaches and allows each successive length of pipe to be lowered into the water. The dual axis pivoting allows the vessel to be moored in any position and is not required to be aligned with the pipeline being layed.

Abstract: A microstrip backfire antenna configuration combining the microstrip type tenna element with a waveguide cavity which provides control over the radiation pattern and obviates the need for a more expensive phased array antenna system; the microstrip element is placed in a waveguide cavity so as to excite both the microstrip element and the waveguide cavity in a predetermined manner.

Abstract: 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.