Abstract: Testable sealed and/or self-diagnosing electromagnetic or solid-state relays simplify troubleshooting of electrical circuits. The testable relay comprises a relay housing with terminals adapted to connect to a circuit and an opposing top wall with testable terminals formed as projections being flush with or extending from the top wall and being exposed for testing the relay by applying a multimeter device. A self-diagnosing relay comprises a relay housing with terminals adapted to connect to a circuit, and at least two light-emitting diodes (LEDs). One of the LED indicates the relay is energized, and another LED light is a diagnostic LED and indicates if the relay is damaged.

Abstract: Testable sealed and/or self-diagnosing electromagnetic or solid-state relays simplify troubleshooting of electrical circuits. The testable relay comprises a relay housing with terminals adapted to connect to a circuit and an opposing top wall with testable terminals formed as projections being flush with or extending from the top wall and being exposed for testing the relay by applying a multimeter device. A self-diagnosing relay comprises a relay housing with terminals adapted to connect to a circuit, and at least two light-emitting diodes (LEDs). One of the LED indicates the relay is energized, and another LED light is a diagnostic LED and indicates if the relay is damaged.

Abstract: Testable sealed and/or self-diagnosing electromagnetic or solid-state relays simplify troubleshooting of electrical circuits. The testable relay comprises a relay housing with terminals adapted to connect to a circuit and an opposing top wall with testable terminals formed as projections being flush with or extending from the top wall and being exposed for testing the relay by applying a multimeter device. A self-diagnosing relay comprises a relay housing with terminals adapted to connect to a circuit, and at least two light-emitting diodes (LEDs). One of the LED indicates the relay is energized, and another LED light is a diagnostic LED and indicates if the relay is damaged.

Abstract: Embodiments are directed to a high performance safety goggle that permits a wide field of view for the user.

Abstract: A rinse fluid valve for use in a vacuum toilet system is disclosed. The vacuum toilet system includes a waste receptacle with a rinse fluid dispenser associated therewith and a source of rinse fluid. The rinse fluid valve has a housing with an inlet in fluid communication with the rinse fluid source and an outlet in fluid communication with the rinse fluid dispenser. A flow path extends from the inlet to the outlet. A moveable rinse fluid valve member is disposed in the flow path and movable between open and closed positions. A fuse valve is also disposed in the flow path and has a normally open position to allow fluid flow therethrough. The fuse valve is actuatable to a closed position after a desired volume of fluid has passed therethrough, thereby to cease rinse fluid flow through the flow path.

Abstract: A system and a method are provided for monitoring the condition of an interface. Although not limited to this particular application, the system and method are particularly suited for monitoring the interface of two liquid lubricated mechanical seal faces. The system monitors an interface by using a wave source to produce an ultrasonic shear wave, directing the wave at the interface, detecting the wave after it interacts with the interface, and comparing the detected wave to predetermined wave characteristics. Based on the comparison, an alarm may be triggered. The alarm may indicate that the mechanical seal is failing.

Abstract: A mailbox includes a body and a door pivotally attached to the body. A signal device is attached to the mailbox by a connecting member. The signal device is secured in a number of positions between the door and body of the mailbox when the door is in a closed position and the signal device is unsupported and free to fall in a downward direction by gravity when the door is opened.

Abstract: An electronic module and chassis for receiving a number of such modules wherein the modules are formed with bare die chips which are directly connected to substrate and metal cover plates which form opposite sidewalls of the modules. The chassis has cooling passages which are formed by metal sidewalls that form slots into which the modules are received so that coolant can provide conduction cooling.

Abstract: A belt assembly comprising a belt member including a pair of end portion and a roller member engaging portion, first and second splice members each including a belt engaging surface having a flat section that engages one of the end portions, and a curved section including a first segment and a second segment engageable with the roller member engaging portion. The first and second segments of each splice member include respective first and second radii of curvature, the second radius of curvature being greater than the first radius of curvature. A plurality of bolts are provided for fastening the first and second splice members together to secure therebetween the end portions of the belt member.

Abstract: A conveyor having a series of pans mounted on chain links with the leading and trailing edges of the pans overlapping. The trailing edge of each pan has a stiffened transverse arcuate based contacted by the front corner of a transverse arcuate front bead on the rearwardly adjacent pan under all operating conditions. The shape of the beads causes the front bead to deflect and self bias into contact. End plates are welded to the pan except at the front bead from the leading corner to the peak of the arc of the bead. This leaves the front portion free to flex to develop the bias. The end plates are also shaped to develop bias to maintain line contact of the front edge of the end plate on the rear portion of the end plate next ahead. The plates overlap in all operating conditions.

Abstract: A pulsed illuminator projector for reducing the reverberation levels of rected ligh by illuminating a lamp that is pulsed on and off at a specified rate and for a specified time duration. The critical factor is controlling the amount of time the light is on versus amount of time it is off, and the frequency at which the lamp is pulsed on. The pulsed illumination projector device reduces the amount of backscatter from particulate matter such as water, zooplankton, dust, fog and the like which causes a significant amount of light to reflect back toward the source thereby reducing visibility. Backscatter is reduced through the reduction of direct incident light. As the backscatter is reduced, the distance which objects can be detected is increased. Illumination is controlled directly by pulse length and repetition rate. The device is completely portable and can be hand held item as well as mounted on a vehicle and operable in gaseous or liquid atmospheres.

Abstract: A bucket for attachment to the chain in a mill duty bucket elevator, includes a one piece wrapper member bent into a U-shaped trough defined by a sloping front wall, a horizontal bottom wall, an upright rear wall, a forwardly sloping rear wall, and a horizontal top lip. A rectangular hole in the wrapper plate defines the outside edges of a chain channel in which the chain lies when the bucket is fastened to the chain. Four side pieces having identical shapes and outside dimensions lie transversely across the trough to provide two end walls and two inside partitions. The partitions brace the front wall and act as side walls of the chain channel. A back plate fastened to the partitions and to the top lip and bottom wall adjacent the rectangular hole acts as the front face of the chain channel. The top lip, fastened to the two end walls and the two partitions, provides torsional stiffness to the bucket.

Abstract: A process for separating radium-226 from an aqueous liquid by adding a precipitant to the liquid. The liquid, including the precipitant, is passed upwardly through a particulate bed to assist co-precipitation and removal of the radium-226. The effect is to produce a fluidized bed of the particulate bed. The process is efficient, rapid and undemanding of space, all advantages not found in the prior art.

Abstract: The present invention provides a splice for high tension belts in which the ends of the belt are curved at about right angles to the belt. Plates are placed on the outside of the two belt ends, spacer bushings are placed between the plates and through apertures in the belt ends, bolts are placed through holes in the two plates and through the spacer bushings, and the bolts are tightened, causing the plates to press against the spacer bushings. The bolts are pretensioned by tightening them to a predetermined tension which is higher than the tension experienced during operation.

Abstract: A multipoint reflective target system for use as sonar targets. The system ncludes a plurality of small spaced apart reflectors that are interconnected by an elongated flexible tether. The tethered reflectors are then towed in the ocean and form an elongated multipoint reflective target comprising a string of spaced apart reflectors moving under and about parallel to the ocean surface. This target is sonified by a sonar pulse and generates a reflected signal having a predetermined shape. The shape of the reflected signal is determined by a selection of parameters such as the length of sonar pulse, the spacing of the reflectors and the size and material of the reflectors. By properly selecting these parameters it is possible for the multipoint reflective target system to resemble much larger actual or similated targets.

Abstract: A reverberation backscatter measurement system for providing in situ measment of acoustic backscatter levels from point source scatterers or the target size of individual scatterers within or at the boundaries of the transmitting medium. The volume scattering strength, a calculated value from measured data, is the logarithmic ratio of the reflected intensity to the incident intensity at a unit distance from the acoustic center of the scatterers. The system accurately measures the parameters of volume scattering strength (S) and target strength (TS) and has application in the measurement and determination of sonar system performance and target strengths of vessels and their wakes. It also may be used in fisheries for biological studies in zooplankton population and distribution assessments. A data processing system is also provided to effectively and accurately process reflected signals indicating target strength and scattering strength.

Abstract: A slant range and direction detector that is particularly useful for tracking underwater target vehicles. The device is capable of very quickly measuring the slant range and indicating the relative bearing from the sound signal emitted by the pinger mounted on a target vehicle. The device is completely portable and can be readily operated by one person. It can be operated over a wide range of acoustic frequencies, for example, 1 Hz to 100 meg Hz. However, it is preferably operated in the 1 KHz to 100 KHz spectrum. The detector uses a plurality of gates, clocks, timers, counters and the like to indicate relative bearing by a three light display system and distance by a counter display. The portable hydrophone sensors are spaced apart a fixed distance and may be operated in either the broadside or endfire modes.

Abstract: A roller assembly for use on a conveyor chain to provide rolling support for the working run thereof includes a roller journaled on a mounting bushing and held thereon from axial displacement by a double sealing ring arrangement at each roller end face. The double sealing rings are arranged to provide a labyrinth seal to aid in the retention of lubricant within and the exclusion of contaminants from the assembly, and the inner ring of each pair also provides an axial thrust bearing surface for the roller. The sealing rings are preferably of L-shaped cross section and are adaptable for use with rollers of either metal or platic construction.