Abstract: A safety system for transfer of pressurized fluid between a cargo tank vehicle and a storage container. A pump or compressor on the cargo vehicle is in fluid communication with the cargo tank, the pump being powered by the vehicle. A pump valve on the vehicle between the tank and the vehicle pump will interrupt fluid passing into the pump. A delivery hose having a first end in fluid communication with the pump and a second end in fluid communication with the storage container transfers the pressurized fluid between the pump and storage container. A first pressure sensor senses pressurized fluid in the delivery hose near the hose second end. A first switch activated by the first pressure sensor closes the pump valve and interrupts the fluid flow. A second pressure sensor senses pressure near the hose first end. A second switch activated by pressure from the second pressure sensor closes the pump valve and interrupts fluid flow.

Abstract: A safety system for transfer of pressurized fluid between a cargo tank vehicle and a storage container. A pump or compressor on the cargo vehicle is in fluid communication with the cargo tank, the pump being powered by the vehicle. A pump valve on the vehicle between the tank and the vehicle pump will interrupt fluid passing into the pump. A delivery hose having a first end in fluid communication with the pump and a second end in fluid communication with the storage container transfers the pressurized fluid between the pump and storage container. A first pressure sensor senses pressurized fluid in the delivery hose near the hose second end. A first switch activated by the first pressure sensor closes the pump valve and interrupts the fluid flow. A second pressure sensor senses pressure near the hose first end. A second switch activated by pressure from the second pressure sensor closes the pump valve and interrupts fluid flow.

Abstract: An improved portable seismic energy source including a base member having cylindrical sidewalls and an open lower end for resting on the earth's surface, a horizontal baseplate secured to the base member upper end, the baseplate having a central opening therein, a gun mounted on the horizontal baseplate for firing a projectile through the opening therein to impact the earth's surface and generate a seismic signal, a spatter plate mounted to the base member such as by means of a vertical cylinder secured to the lower surface of the baseplate with the lower end of the cylinder being affixed to the spatter plate, the spatter plate having an opening therein in register with the cylinder so that a projectile fired passes through the opening, the spatter plate being positioned above the earth's surface, and a flexible diaphragm secured at its periphery to the lower circumferential surface of the base member and having a central opening therein, the diaphragm being stretched over the top of the spatter plate, the sp

Abstract: An improved dampened ultrasonic transducer for imparting sonic energy to or receiving sonic energy from fluid, having a housing with a cylindrical cavity therein providing a closed end wall at one end and an opening in the opposite end, the housing having internal threads adjacent the opening. A piezoelectric crystal is positioned within the housing, the front face being contiguous to the cavity closed end wall, a cylindrical dampening member positioned within the cavity with the front face contiguous to the crystal rear face, a plurality of spring washers, the forwardmost washer engaging the rearward face of the dampener member, and an externally threaded plug member positioned in the rearward end of the housing and threadably advanced to apply compressive resilient force against the dampening member to maintain firm contact of the dampening member with the crystal and the crystal with the housing closed end wall.

Abstract: An improved sonic flowmeter having a conduit with an inlet and outlet through which fluid flows for rate measurement, a portion of the conduit providing a linear flow path, a first and second spaced apart transducer element positioned to transmit and receive energy traveling through fluid as it traverses the linear flow path, circuitry connected to the transducer elements for detecting the speed of sound transmission between the transducer elements as an indication of the rate of fluid flow through the linear flow path, and dividers within the linear flow path separating the fluid stream into a plurality of reduced cross-sectional area streams, each providing a separate linear flow path through which sound is transmitted between the transducer elements providing means of increasing the linearity and repeatability of the detected rate of fluid flow.

Abstract: A method of generating a seismic signal by forming a shallow hole in the earth's surface, at least partially filling the hole with liquid, positioning a projectile firing apparatus over the hole and firing a projectile downward into the hole impacting the liquid therein.

Abstract: A portable seismic energy source having a base for resting on the earth's surface, a gun providing a means of firing a projectile to impact the earth and generate a seismic signal and a ball and socket to mount the gun on the base to permit the projectile fired by the gun to strike the surface of the earth at a selectable angle.

Abstract: An improved seismic energy source having a base with an opening therethrough and having a gun mounted on the base for firing a projectile to impact on the earth's surface and generate a seismic signal, the improvement including a spatter plate and a flexible diaphragm affixed at its periphery to the base lower end, the diaphragm having an opening through which the projectile fired by the gun passes, the diaphragm serving to keep the base chamber free of compacted soil kicked up when the projectile impacts the earth and to contain and quiet the muzzle blast.

Abstract: A method of measuring the flow rate of a fluid through a conduit by means of a sonic flow meter employing the steps of measuring the speed of sound transmission through the fluid from an upstream point in the conduit to an opposed downstream point, measuring the speed of sound transmission through the fluid from the downstream point to the upstream point, subtracting the two measurements to obtain a liquid flow rate indication, adding the two measurements to obtain the fluid sound velocity, measuring the temperature of the fluid in the conduit, determining a measurement of the fluid viscosity from the fluid speed of sound transmission and the temperature, and correcting the determined fluid velocity utilizing the detected fluid viscosity.

Abstract: A cell for coalescing oil droplets dispersed in a water emulsion including an elongated perforated tube core into which the emulsion is injected, layers of oleophilic plastic covered metal mat wound about the core through which the emulsion is forced to pass, the fibers of the metal mat being covered by oleophilic plastic such as vinyl, acrylic, polypropylene, polyethylene, polyvinyl chloride, the metal being in the form of layers of expanded metal or metal fibers, either aluminum or stainless steel. In manufacturing the cell a helix wound wire is formed around the cylindrical plastic coated metal to retain it in place and resist pressure drop of fluid flowing through the metal fibers. In addition, the preferred arrangement includes the use of an outer sleeve formed of a mat of fibrous material such as polyester fibers, acrylic fibers, modacrylic fibers and mixtures thereof.

Abstract: A lightweight, mobile, low-energy seismic source comprises an industrial shotgun, having a solid projectile combined with a base structure to support the gun in a substantially vertical position, slightly above the surface of the earth. The muzzle velocity of the projectile is sufficiently high that it can provide up to 9,000 foot pounds of energy impacting on the earth, which is comparable to that of some of the larger weight drop machines. Wheels or carrying bars can be provided for manual transport of the source.

Abstract: An apparatus for separating entrained solids and particularly paramagnetic filing entrained in a liquid, including a vessel with a fluid inlet and outlet, a center tube supported within the vessel over the fluid outlet, a plurality of magnetic discs received in spaced orientation on the center tube and a plurality of paramagnetic discs, each paramagnetic disc being positioned between adjacent magnetic discs and a barrier filter tube positioned around the discs, the top and bottom of the tube being closed so that all fluid flowing into the vessel flows radially through the filter tube, the magnetic and paramagnetic discs causing the formation of radially extending flux lines throughout the filter tube so that iron filings collect and orient radially on the exterior of the filter tube.